The difference in the properties of fiber polymer reinforcement and steel bar makes the bonding performance of fiber polymer reinforced concrete significantly different from that of reinforced concrete. According to the force transmission mechanism between fiber polymer reinforcement and concrete, the relationship between bonding stress, fiber polymer reinforcement stress and anchorage length is discussed, and the basic formula for calculating the bonding of fiber polymer reinforced concrete is established. On the basis of summarizing the existing bond-slip constitutive models of fiber polymer reinforcement and concrete at home and abroad, a continuous curve constitutive model of bond-slip is proposed. The model is based on the three key points of the bond-slip curve, and the physical concept is clear, smooth and continuous. Finally, the calculation of anchor length is discussed, and the calculation method of anchorage length is suggested.

Based on the successful development of the catalytic synthesis process of 2-methyl-1,4 hydroquinone, the reaction kinetics of the synthesis of 2-methyl-1,4 hydroquinone under the action of catalyst were studied, a series reaction mechanism was proposed, the reaction speed of the system was expressed by the change rate of the concentration of the system with time, the kinetic model was established, the parameters in the model were determined, and the proposed kinetic model was experimentally verified. Experiments show that in the temperature range of 356.15~368.15 K, the apparent activation energy of the reaction Eα=67.7750 kJ·mol-1, which is between 40~400 kJ·mol-1 of the general chemical reaction, belongs to the chemical reaction control process.

The gray clustering decision is to generate a gray clustering matrix by analyzing and calculating the collected scattered information through the whitening function and the gray clustering weight, so as to classify the research objects. On the basis of discussing the principle of gray clustering method, taking the water quality assessment of a city as an example, the application of gray clustering decision in water quality assessment is discussed, and the water quality assessment procedure is compiled in VB language. This method and its software can evaluate the water quality of different water bodies, and the evaluation results objectively reflect the water quality status and category of water bodies, which overcomes the defect that single-factor evaluation is easily affected by individual factors.

Aiming at the shortcomings of the commonly used two-parameter model of hyperbolic regression, the third parameter is introduced to establish the hyperbolic regression three-parameter model. Taking the analysis of observation data of Luhun Reservoir Dam as an example, the practicability of the hyperbolic regression three-parameter model is fully verified by comparing and analyzing the results of the established hyperbolic regression three-parameter model, the common hyperbolic regression model and other models.

The polymerization of vinyl acetate and butyl acrylate as the main monomers by semi-continuous emulsion polymerization was studied. According to the FOX equation, the appropriate proportion of monomer was determined, new crosslinkers A and B were developed, and their addition ratio was determined, and the joint use of A and B greatly improved the adhesion performance. The polymerization conditions were investigated from the influence of polymerization reaction conditions (such as polymerization temperature and drop acceleration of monomers) on the properties of the adhesive, and the reaction process was determined. The results show that under suitable polymerization conditions, acrylate and vinyl acetate are used as the main raw materials, and crosslinkers A and B are added to synthesize a new emulsion-type paper-plastic composite adhesive with no pollution and low cost, and the product performance is excellent.

On the basis of the systematic analysis of the shear performance of reinforced concrete beams, the shear performance test of 24 reinforced concrete beams subjected to concentrated load and uniform distribution load was carried out, and the main factors considered were shear span ratio (λ=a/h0), span height ratio (l0/h), horizontal and vertical rib reinforcement ratio (ρsh and ρsv). Finally, a unified calculation method for the shear bearing capacity of reinforced concrete beams in oblique section is proposed. This method can be used to calculate the oblique section bearing capacity of deep beam, short beam and shallow beam, and the calculation results are in good agreement with the test results.

In view of the problems existing in the slope stability analysis bar method, on the basis of the finite element calculation of the saturated-unsaturated seepage immovable grid, the permeability of the soil unit is used to replace the pore water pressure around it, so as to achieve the purpose of directly and continuously analyzing the slope stability under seepage by using the split grid and calculation results during seepage calculation, and automatically find the minimum safety factor by using the simplex method in mathematical programming. Examples show that this method has certain practicability and provides a practical tool for the analysis of slope stability problems under saturated-unsaturated unstable seepage caused by rainfall.

Hyperbolic cooling tower is an important structure in the power industry, and its reliability is directly related to the stability and safety of power production. Combined with the reliability identification of a hyperbolic cooling tower of a thermal power plant, according to the structural characteristics of the hyperbolic cooling tower, a structural model composed of beam elements and shell elements was established, and the force of the hyperbolic cooling tower under various load combinations was analyzed and calculated by the finite element method, and the reliability analysis and identification method of such industrial structures was proposed. The analysis and calculation results show that this method is systematic, comprehensive and in line with the structural reality, and can consider the influence of structural damage on the stress performance of the structure, and has been applied to the engineering practice.

The initial axial tensile strength of steel fiber concrete is an important index for determining the crack resistance of steel fiber concrete, and it is also an index for indirectly measuring other mechanical properties of steel fiber concrete. Through the analysis of the axial tensile test results of steel fiber concrete, the effects of steel fiber shape and volume ratio and concrete strength grade on the initial crack strength of steel fiber concrete shaft tensile were studied. The results show that the initial tensile cracking strength of concrete shaft increases with the increase of steel fiber volume rate and the increase of concrete strength grade, respectively. Finally, the calculation model of the axial tensile initial crack strength of steel fiber concrete is established, and the calculation formula of the axial initial crack strength of steel fiber concrete is proposed for the revision of China’s < steel fiber concrete design and construction regulations> as well as engineering design and construction reference.

Homogeneous polymer-supported palladium catalysts (referred to as PVP/HAc-pd, pvp/hc-pd, pvp/paa-pd) were prepared using the molecular complex of poly(4-vinylpyridine) (PVP) and acetic acid, hydrochloric acid and polyacrylic acid as the carrier, and the activity of these catalysts for nitrobenzene hydrogenation was studied, and it was found that the activity and stability of PVP/HAc-Pd were the best, and it was significantly improved than that of poly(4-vinylpyridine) supported palladium catalysts. The presence of inorganic strong base KOH has a significant acceleration effect on the reaction. The effects of various alkalis, KOH dosage, solvent and temperature on the hydrogenation performance of nitrobenzene catalyzed by PVP/HAc-Pd were discussed in detail. The results showed that among PVP/HAc-Pd, 4-vinylpyridine and acetic acid were the most

The effects of different impact velocity and different abrasive size on the erosion wear rate of plasma sprayed Al2O3 ceramic coating under solid particle erosion conditions were studied, and compared with 20 steel under different conditions, the erosion wear characteristics and wear mechanism of plasma sprayed Al2O3 ceramic coating were analyzed, and the erosion wear characteristics of plasma sprayed Al2O3 ceramic coating with brittle characteristics were proposed, which was suitable for low-speed erosion wear conditions of fine abrasives.

The production of activated zinc oxide is usually prepared by the metathesis reaction of soluble zinc salt and soluble carbonate, and is prepared after processing. The method of producing activated zinc oxide with zinc roasted sand was introduced, and the technical conditions of the production process were studied, the process flow was based on zinc roasted sand as raw material, directly reacted with carbonized mother liquor after acid leaching and purification, and then decomposed into activated zinc oxide after sedimentation, its quality met the GB 3185-87 first-class standard, the main content was ≥ 99.7%, the specific surface area was ≥ 71 m2/g, and the specific surface was proportional to the activity and the crystallinity. The process has a wide range of raw materials, strong adaptability, high waste liquid recovery rate, no pollution, low production cost, high quality, strong activity, and strong market competitiveness.

Based on graph theory and genetic algorithm, an improved genetic algorithm for finding the minimum spanning tree is proposed. The algorithm uses binary coding to represent the minimum tree problem, uses the depth-first search algorithm to judge the connectivity of the graph, and designs the corresponding fitness function, one-parent transposition operator and single-parent reversal operator, as well as four control evolution strategies to improve the execution speed and evolutionary efficiency of the algorithm. Compared with the Kruskal algorithm, the algorithm can obtain a batch of minimum spanning trees in a single genetic evolution process, which is suitable for solving different types of minimum tree problems.

The concepts of distance and proximity in fuzzy theory are used to measure the closeness of the column vectors of the judgment matrix and the sorting weight vectors, starting from the vector with the worst degree of proximity, find out the elements that have the greatest impact on the consistency of the judgment matrix, and use some properties of the consistency inverse matrix to modify it and its symmetric elements. A corresponding computer program has been written to improve the consistency of judgment to make the improvement more convenient. Case studies show that this method can effectively improve the consistency of the judgment matrix and is simple and easy.

By using PID and PDFSV control for a three-degree-of-freedom manipulator, the application of PDFSV method in robot position control is introduced. Simulate the coefficients of each order and the addition step and sinusoidal interference of the controlled object, and analyze them theoretically. The results show that the control method has simple design, fast response speed, and no overshoot, and its control form is suitable for the needs of the robot, and its good robustness can make up for the nonlinear factors and inter-joint coupling of the manipulator. Only position and velocity feedback signals are required to control position, velocity and acceleration. At the same time, the small amount of calculation in the control is also conducive to its practical application.

The process and characteristics of xanthan gum fermentation process are introduced, and the control of temperature and pH value of fermentation process is discussed. The key points and difficulties of control are the nonlinear and time-varying characteristics of the system. The decision logic unit is used to combine fuzzy control with intelligent PID control to adjust the temperature, and the pH value is controlled by the humanoid intelligent switch control method by analyzing the error curve of the system. The intelligent control method has achieved better control effect.

Aiming at the problem of insufficient data quantity in the quality control modeling of multi-variety and low-batch production process, based on the similarity principle of grouping technology, it is proposed to organically integrate the current data of the processing process with the historical data, and establish a data sample model of statistical quality control of the multi-variety and small-batch production process through standard transformation, so as to realize the purpose of monitoring the processing process by using the control chart. The results show that this method is simple and easy to implement, and it is one of the effective ways to solve the insufficient amount of data in the quality control modeling of multi-variety and low-volume production processes.

The characteristics and practical engineering development examples of remote diagnosis of devices using Winsock combined with POP3 and SMTP protocols are expounded, and the Winsock and POP3 protocols and the remote fault diagnosis through the network to replace people running are introduced in detail. The implementation and programming of users under LAN access and Modem dial-up access are discussed. The whole system is implemented in the C++Builder language environment, the interactivity of the system is stronger than the web-based remote fault diagnosis, in the case of LAN access, the diagnostic center can dynamically interact with customers.

The architecture and implementation of a high-performance network laboratory are introduced. THE LAB INCLUDES LAN, METRO, WAN, WIRELESS AND THEIR INTERCONNECTIONS, AS WELL AS DIFFERENT HOST PLATFORMS SUCH AS UNIX, LINUX, AND WINDOWSNT. The laboratory can simulate various network environments, support various routing and multicast protocols, such as RIP I&II, OSPF, IGRP, EIGRP, BGP4, DVMRP, IGMP, CGMP and so on. In addition to providing regular Internet services such as WWW, DNS, FTP, PROXY, EMAIL, DIAL, the laboratory can also simulate IP telephony and video conferencing systems.

At present, XML-based distributed application system is the application of WEB technology in the new distributed file processing system. The framework of distributed application system is discussed, XML-based transmission protocols, such as simple object access protocol, and the system framework of distributed application system composed by combining XML and component technology is given. Then, an XML-based distributed application system was designed, and the basic components were customized in the system: MYHTTP.DLL, MYSOAP.DLL, mytest.dll, which are used for basic HTTP, SOAP operations and transaction processing. Finally, the communication mechanism between components is explained.

The properties of organic matter are related to structure, structure determines the property, and all kinds of organic matter with similar structure have commonality or similarity in physical properties, chemical properties, reactivity, etc. Through the comparative study of the physical and chemical properties and reactivity of some substances with similar series or structure, it is concluded that the similar analogy method has a more common regularity in the field of organic chemistry, which has important guiding significance for learning and studying the basic properties of organic matter and predicting its reactivity.

Irrigation and fertilization technology is an organic combination of irrigation technology and fertilization technology, and only the rational and integrated use of the two technologies can exert its maximum efficiency; Compared with the traditional fertilization method, irrigation fertilization technology has many incomparable advantages, but at the same time, it also puts forward higher requirements for the manufacture and use of fertilizer, and only fully water-soluble fertilizer can be successfully used in micro-irrigation system, which makes most of the phosphate fertilizer varieties cannot be used for irrigation fertilization. Completely solving the problem of phosphorus source in irrigation fertilizer is conducive to promoting the large-scale promotion of irrigation fertilization technology in China.

Combined with the model test of Panshi Reservoir water transmission hole, modern turbulence theory is applied to observe and qualitatively analyze the complex flow structure in the conical valve drainage tank downstream of the water conveyance tunnel, and the dissipation is analyzed mechanically from the perspective of turbulence mechanics. It is believed that the significant feature of the flow state in the cone valve damping cell is that there is a large range of winding and suction zone at the bottom of the cone, the flow state has strong three-dimensional nature, and the large-scale vortex sequence structure plays a leading role in the flow velocity distribution, pressure distribution and energy dissipation in the pool, which lays a foundation for the further quantitative calculation of the flow state and energy dissipation in the cone valve damping cell.

The hollow brick masonry was reinforced by three methods: cement mortar surface layer, one GRC mesh cloth layer and two GRC grid cloth layers, and a total of 36 small specimens were reinforced, and by comparing with the test results of 12 unreinforced control specimens, it was concluded that the use of two-layer GRC mesh cloth to reinforce hollow brick masonry had a good crack barrier effect, and could significantly improve the shear strength of hollow brick masonry. The influencing factors of the shear strength of the reinforced specimens were analyzed, and a calculation method for the shear bearing capacity of hollow brick masonry reinforced with GRC mesh cloth was proposed. In order to facilitate the application in the project, the construction requirements of hollow brick masonry with GRC mesh cloth are proposed.

In recent years, many literature has done a lot of research on the application of fly ash materials, but none of them have studied non-autoclaved load-bearing fly ash bricks. Through the compressive test of 3 groups of 30 standard specimens built with non-autoclaved fly ash bricks, the crack development characteristics and deformation law of non-autoclaved fly ash brick masonry were discussed, and the compressive strength calculation formula was established according to the compressive test results of 30 specimens. The results show that compared with ordinary brick masonry, the new building material has similar crack development characteristics and similar ultimate load, and can be used as a new load-bearing wall material to replace clay brick.

Due to the great difference between the concrete in the actual structure and the standard curing test block, it is inappropriate to use the compressive strength of the standard curing test block to determine the strength grade of the concrete in the structure in the traditional detection method. In order to find the best strength that can represent the strength of concrete in the structure, this test measured the standard curing strength, curing strength under the same conditions and the coring strength of the structural entity of the concrete of the two manufacturers in Zhengzhou, analyzed the correlation between the three and the factors causing their differences, and obtained the correlation between the three strengths, so as to find out the convergence point suitable for detecting the concrete strength of the structure and the concrete strength grade judgment standard suitable for Zhengzhou City.

The dynamic time domain problem of joint load transfer between multiple plates and its interaction with the foundation is an important problem in the non-destructive testing and evaluation of rigid pavements and airports. Using the finite element method, by isolating each plate and expanding the corresponding matrix, the discontinuous problem with seams can be analyzed and calculated like a continuous problem. This method can not only be used to solve the static problem of multi-plate system and the dynamic problem in the frequency domain, but also simplifies the foundation into spring and damper, which can be successfully used for the dynamic time domain problem.

Several improvements have been made to the slow convergence speed of standard genetic algorithms: in population initialization, uniform generation of initial population instead of random generation; The implementation of truncated selection implies the optimal preservation strategy; Dynamic variation, combining the improved genetic algorithm and system recognition principle, is applied to pavement inverse analysis. The theoretical data and the measured data were calculated and analyzed, and the calculation results of the software that are more common at home and abroad were compared and analyzed. The results show that the improved genetic algorithm has fast convergence speed and strong global optimization ability, and the pavement inversion using the algorithm can avoid solving the sick equation, and the inversion results are stable and reliable.