CN114139417A - Method for measuring coupling of nonlinear power and environment medium of pipe gallery under traffic load - Google Patents
Method for measuring coupling of nonlinear power and environment medium of pipe gallery under traffic load Download PDFInfo
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Abstract
The invention belongs to the technical field of building evaluation, and discloses a method for measuring coupling of nonlinear power and an environment medium of a pipe gallery under traffic load, which comprises the following steps: through full-scale model tests, three-dimensional numerical models and theoretical researches, combined with field test verification, the dynamic response rule of a typical prefabricated pipe gallery structure in a soft soil foundation under the action of traffic load is determined, the energy transfer process of a soft soil-pipe gallery system under the action of traffic load is determined, and the stress mechanism, deformation, strength and rigidity characteristics of the prefabricated pipe gallery structure in the soft soil foundation are obtained; the method comprises the steps of constructing a dynamic response characteristic analysis model of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load, determining an analysis system and a calculation method of the structure of the prefabricated comprehensive pipe gallery of the soft soil foundation, determining a control index, and evaluating the coupling of the nonlinear power and an environment medium of the power pipe gallery in the soft soil foundation under the traffic load. The method can provide theoretical basis for pipe gallery design, construction, structural condition risk assessment and the like.
Description
Technical Field
The invention belongs to the technical field of building evaluation, and particularly relates to a method for measuring coupling of nonlinear power and an environment medium of a pipe gallery under traffic load.
Background
At present: with the development of the urbanization process, the construction of the urban underground comprehensive pipe gallery and the management technology thereof are increasingly improved, but the research on the aspects of the design, the construction technology and the like of the urban comprehensive pipe gallery is still not systematic at present, the achievement is less, and the urban underground comprehensive pipe gallery is still in the research and experience accumulation stage. There are still some problems in the utility tunnel construction, restrict its rapid development. The standardization and modularization of the underground comprehensive pipe gallery are important prerequisites for popularizing the underground pipe gallery prefabrication and assembly technology, but the corresponding standard system in China is not complete. The pre-fabricated piping lane does not have complete design standards and acceptance criteria to be followed.
Along with the development of economy and traffic industry in China, urban traffic transportation is highlighted by new characteristics of increased traffic volume, increased load (even overload), accelerated vehicle speed and the like, and the new characteristics of traffic load also bring serious challenges to the normal use and safe operation of underground pipe galleries. Therefore, much attention needs to be paid to the mechanical properties of the underground pipe gallery under the action of traffic load.
Repeated action of traffic loads can cause unrecoverable permanent settlement deformation of soft soil foundations. The different upper load of each section and the different section uneven deformation resistance difference and the like can cause the underground pipe gallery to generate uneven settlement or transverse displacement, and the expansion joint of the pipe gallery is staggered, expanded or extruded; lateral torsion damage of the pipe gallery can be caused by factors such as unilateral settlement or uneven reinforcement. This may cause local overstressing of the piping lane concrete structure and forces and deformations within the structure may exceed limits. Therefore, the influence of factors such as traffic load in soft soil areas is considered, the stress deformation problem of the underground pipe gallery and the corresponding measures such as different structures are deeply researched, and the method has important theoretical significance and engineering application value.
Until now, related research results mainly focus on the aspects of pipe culvert and underground tunnel. In the prior art 1, a tunnel longitudinal similarity model test is carried out, and the influence of the distribution and the property of a horizontal soil layer under a tunnel, different overloading sizes and action positions of the earth surface, an assembly mode and the like on the stress deformation of a tunnel structure under the action of locally uniformly distributed loads is researched. In the prior art 2, longitudinal settlement forms of soil layers under various conditions are analyzed by simulating horizontal uneven soil layers, locally acting uniform loads on the earth surface and the like through a similar structure model test. In the prior art 3, a finite element numerical simulation method is adopted to analyze the longitudinal settlement reason of the tunnel, the stress deformation mechanism and the waterproof failure mechanism of the tunnel structure after uneven longitudinal settlement. In the prior art 4, the deformation of the immersed tube tunnel is mainly caused by the recompression deformation of soft soil, and the change of pore water pressure inside the soil body and the seepage of water can have great influence on later-stage settlement. In the prior art 5, a control index value of the non-uniform settlement of the cross-river tunnel caused by longitudinal bending is researched, and meanwhile, a reasonable value of relative bending is researched for the non-uniform settlement of the cross-river tunnel caused by circumferential staggering. The Shanghai city provides a definite control value for the longitudinal curvature radius and the relative bending of the subway shield tunnel. The existing foundation settlement allowable values have large regulation difference, a lot of allowable values are obtained on the basis of engineering experience, and related research results related to underground pipe galleries are few at present.
In the related research field of underground pipe culverts, prior art 6 researches the response condition of a reinforced concrete pipe with the diameter of 1400mm under the action of traffic load 850kN through a series of core-drilling machine tests, and considers the influence of the depth of a soil covering layer and the position and the size of the traffic load on the bending moment of the pipeline. Prior art 7 has studied the response of pipeline power in non-uniform fields, and it is found that the displacement of pipeline joint position will become great when the rigidity of the soil mass changes. In the prior art 8, pipelines in different media are analyzed by a method of combining static Mindlin solution with planar dynamic strain, and the maximum stress of the pipeline at the position where the media change is found. In the prior art 9, the change rule of the soil pressure borne by the underground box-type structure is researched by adopting a numerical simulation mode. In the prior art 10, theoretical research is performed on a pipeline stress characteristic analysis model in a soft soil foundation under the action of traffic load on the basis of an elastic theory. In the prior art 11, a Pasternak two-parameter foundation model is adopted to establish a buried pipe culvert longitudinal mechanical model reasonably considering foundation differential settlement. The research shows that: the deflection, the corner, the bending moment and the shearing force of the pipe culvert structure all have sudden changes at the differential settlement position, and the influence range of all elements by the differential settlement is limited. The influence of different soft soil foundation elastic moduli on the longitudinal stress and the vertical displacement of the ultra-long culvert is analyzed in the prior art 12 and the like. In the prior art 13, the stress and deformation characteristics of the steel corrugated pipe culvert are researched, the stress and deformation rules under the action of different filling heights and traveling loads are analyzed, the pipe top and the orthogonal position of the pipe top under the action of different filling heights are proved to be the most unfavorable for stress and deformation, and the design of soil pressure control at the top of the culvert is provided under the condition of high filling. In the prior art 14, a series of researches are carried out on the mechanical properties and deformation characteristics of the buried pipeline under the action of self weight of a soil body, the static load and the vehicle load, and the buried pipeline is considered to have an optimal buried depth theoretically, and the danger point of the buried pipeline is related to the constraint conditions at two ends of the pipeline.
The non-uniformity of the soil layer, the asymmetry of the ground load and the like can cause the load borne by the underground structure to be asymmetric, thereby causing the structural deformation and the change of the internal force, and even causing the integral displacement of the underground structure to one side. The prior art 15 researches related problems of lateral parts of tunnels in different loosening angles and different loosening degrees, such as transverse bearing capacity of the tunnels and change modes of tunnel structure forms. In the prior art 16, the bearing capacity of the through-seam assembled lining is researched through a full-scale test, the bearing capacity safety coefficient of the tunnel structure under the working conditions of top overload and bilateral unloading is obtained, and the stress of the tunnel structure under the condition of bilateral unloading is considered to be more unfavorable. In the prior art 17, a three-dimensional entity model is established by using ABAQUS, the influence of ground ballast, a soil lateral pressure coefficient and a soil resistance coefficient on the development of transverse deformation of a tunnel is researched, and the change of the diameter of the tunnel is used as a judgment index for the development of the behavior of a transverse structure of the tunnel. In the prior art 18, under the condition that the overlying vertical load of the tunnel is kept unchanged and the horizontal load is reduced, the relation between the horizontal diameter deformation of the tunnel and the maximum opening amount of a joint, the maximum concrete stress and the like is researched, and the deformation control limit value of the cross section of the tunnel is provided. Systematic research results are not much about the influence of surface asymmetric loads. In the prior art 19, through a large number of field observations, an interaction model of a supporting body-surrounding rock of a roadway (tunnel) is established, an asymmetric load factor and a structure analysis method are introduced, the internal force and deformation performance of different types of supporting bodies under an asymmetric load condition are researched, the influence of asymmetric load on the bearing capacity and the contractible performance of the supporting body is discussed, and design elements of the roadway (tunnel) supporting body under the condition are provided according to the influence. The study of the prior art 20 shows that the influence of the asymmetric load ratio is large on the surrounding rocks with poor lithology or broken lithology and the roadway with large width, the roadway bottom pressure can be deflected to a certain extent in the prior art 21, a three-dimensional model of the corrugated steel pipe culvert under the action of the bias load is constructed by using finite element software, the stress deformation characteristic and the soil pressure around the pipe of the corrugated steel pipe culvert under the action of the bias load and the symmetric load are contrastingly researched, the maximum value and the form of the horizontal deformation and the vertical deformation of the corrugated pipe under the action of the bias load are determined, and the existence of the bias load can greatly influence the stability of the pipe culvert.
To date, there has been little systematic research on the relatively new underground structure of the utility tunnel, both domestic and foreign. In the prior art 22, theoretical derivation and analysis are carried out on the interaction between the underground pipe gallery and the soil body from factors such as pipe gallery burial depth, soil body rigidity, force transmission method and the like. The prior art 23 is used for researching and analyzing the influence of the large excavation on the adjacent structure, and the settlement deformation caused by the large excavation is considered to be an important reason influencing the rigidity of the structure. Structures that are too rigid are more prone to greater bending moments, which are detrimental to the structure. The prior art 24 elaborates the layout scheme of the pipe gallery in detail, including the influence of factors such as the embedding depth, the setting position and the construction mode of the pipe gallery on the society and the environment, and respectively analyzes the advantages and disadvantages of various pipe galleries in detail. Prior art 25 introduces the use of shield technology to construct pipe galleries under existing building structures, considering that cut-off walls can be used to control the deformation of existing structures due to foundation settlement; the method for determining the range of the stratum deformation area caused by the construction of the underground comprehensive pipe gallery is provided, and the width of the area influenced by the construction is determined by the construction specific parameters of the pipe gallery tunnel, the mechanical characteristics of the surrounding rock soil body and the like.
The underground comprehensive pipe gallery deformation and control research aspects are carried out in China. In the prior art, 26, a prefabricated prestressed comprehensive pipe gallery is researched through a full-scale test, and a design method of a prefabricated prestressed comprehensive pipe gallery joint is provided. The results show that: under the action of equivalent symmetrical load of four side walls, the joint has better ductility, deformability and safety warning, but the waterproof performance and the integral stress performance of the splicing part of the prefabricated splicing comprehensive pipe gallery are weaker, and the test conditions can not reflect the stress state of an actual structure. The prior art 27 uses fuzzy theory to evaluate the safety of utility corridors. The existing conditions of the comprehensive pipe gallery, such as steel bar corrosion, concrete cracking, structural water seepage, soil liquefaction and other factors, are considered, the bearing capacity is reduced along with the increase of the corrosion degree of the steel bars, and the influence of the soil liquefaction on the structural settlement is obvious. In the prior art, stress performance test researches are carried out on the pipe gallery connecting node and the whole cross section in the prior art 28 and the like, but the research is not carried out on the bonding performance of the superposed surface directly influencing the whole structural performance and the longitudinal connecting performance of the pipe gallery under the actions of uneven settlement and slippage of a longitudinal foundation of the pipe gallery and an earthquake. In the prior art 29, based on a continuous medium finite element method, a three-dimensional finite element model of a soil body and a pipe gallery is established by using an ABAQUS, the stress distribution and the displacement change of the soil body and the pipe gallery in a normal use stage are subjected to numerical simulation calculation, and the stress and the displacement change of key parts of the pipe gallery under different burial depths are subjected to comparative analysis. The prior art 30 analyzes the respective characteristics of several main calculation modes of the comprehensive pipe gallery structure, and adopts finite element software (Midas Gen) to perform static analysis on a proposed single-cabin and double-cabin underground pipe gallery structures respectively, but does not consider the dynamic load characteristics of vehicles and the long-term influence thereof.
With respect to the dynamic characteristics of the underground utility tunnel, the results have mainly focused on seismic action research. The stress characteristics of the comprehensive pipe gallery under the earthquake condition are analyzed in the prior art 31, and the earthquake damage is obtained under the combined action of the relative deformation of the surrounding soil bodies and earthquake waves, which indicates that the movement of the soil and the excitation of the earthquake are the primary reasons for the instability of the underground space structures such as the pipe gallery. Prior art 32 has studied utility tunnel damage due to liquefaction; the prior art 33 studies the soil-structure interaction mechanism of the utility tunnel and the surrounding soil mass and proposes a reinforcement scheme according to the results. The prior art 34 discusses the improvement effect of the optimization of the construction method on the seismic resistance of the comprehensive pipe gallery. Prior art 35 studies the dynamic response of tunnels in soft soil foundations under lateral seismic excitation. In the prior art 36, the phenomenon of the underground comprehensive pipe gallery vibration table model experiment is analyzed through a longitudinal seismic excitation experiment. Prior art 37 utilizes experiment and numerical simulation technique to carry out utility tunnel's seismic response analysis, and the result shows: there is a fairly significant soil-knot interaction in the dynamic reaction of utility tunnels. In the prior art 38, FLAC software is used, Kobe seismic motion input is used for performing seismic response analysis on an underground comprehensive pipe gallery in liquefied soil, and the soil acceleration, the excess pore pressure ratio, deformation of the pipe gallery and the soil and the change rule of the internal force of the structure are explored. In the prior art 39, ABAQUS software is used for carrying out three-dimensional seismic response analysis on a comprehensive pipe gallery, surrounding soil bodies and a pipeline system of a pier in a ditch. In the prior art 40, model test research on a large-scale vibration table of an underground comprehensive pipe gallery is carried out, and boundary effect, soil acceleration response, deformation response and joint dynamic response of a model box are researched. The research result of the prior art 41 shows that under the condition of the same reduction coefficient, the structure internal force under the action of dynamic force is obviously increased compared with that under the action of static force. The existing achievements can provide basic theoretical basis for the research and design of the stress performance of the prefabricated and assembled comprehensive pipe gallery under the action of earthquake. With regard to traffic loads and their effect on underground structures. The prior art 42 theoretically and numerically studies the influence of ground load on a bidirectional tunnel in soft soil under a plane strain condition, and simulates the load continuously loaded on the ground and the smooth interface condition by using finite element software. The research in the prior art 43 considers that the influence of the wheel load change on the vertical additional stress in the roadbed is large. The influence depth of dynamic response caused by driving load in the soft soil foundation is generally within the range of 6-10 m. The research in the prior art 44 considers that the roadbed response is enhanced due to an excessive overload rate and excessively fast and slow driving speeds, and the influence on a road structure system is large. The additive effect of the load is evident as the depth increases.
The existing research shows that: the vibration collapse caused by dynamic disturbance is the cause of settlement of soft soil tunnel. The Shanghai pump road tunnel causes longitudinal uneven settlement due to ground overload, and water leakage is serious once. In the prior art 45, the vehicle load is simulated to be the sum of the dead weight and the sinusoidal load, and the response of the shallow tunnel lining to the vehicle load is researched. Prior art 46 has studied the influence of traffic load on shallow loess tunnel stability. In the prior art 47, the ground load and the stress condition of the shallow tunnel under the surrounding rock earthing are obtained, and the influence rule of the radius of the tunnel, the ground load and the like on the stability of the surrounding rock is analyzed. The utility tunnel buries underground structure as shallowly, and its vehicle power effect is more showing. Therefore, the actual effect of the vehicle load is taken into full account when designing the underground utility tunnel. However, no typical results have been found in the study of the dynamic characteristics of the underground utility tunnel under traffic load.
As can be seen from the prior relevant research results, the current research on the tunnel dynamic response under traffic load mainly focuses on the aspect of dynamic analysis under simple axisymmetric load, which is far different from the tunnel dynamic response under the action of general traffic load (generally, non-axisymmetric). Because the processes of building underground pipe galleries and building subways, tunnels and underground pipe culverts are similar, the underground pipe galleries are often built according to experience and standards equal to or higher than relevant standards in actual work, but the underground pipe galleries and the subways, the tunnels and the underground pipe culvert have little difference in functions and requirements, and the design standard requirements of the underground pipe galleries and the subways, the tunnels and the underground pipe culvert structures are adapted to the underground pipe galleries and the subways, the tunnels and the underground pipe culvert structures. From the mode of bearing the load, city underground pipe gallery buries the depth, regards soil pressure as the leading control factor of structural behavior, and it is disturbed greatly by the traffic load. In the utility tunnel project under the soft soil geological condition, the mutual influence among all structures or parts is more obvious. At present, the calculation assumption of a structure calculation model adopted by underground comprehensive pipe gallery engineering is different from the actual situation to a certain extent, and the influence of the structure under the action of asymmetric load is not considered, including the transverse and longitudinal deformation and the internal force of the pipe gallery structure under the action of the asymmetric load, and the change calculation of soil pressure is not considered.
To sum up, at present, the mechanical behavior response of the underground pipe gallery structure under the soft soil geological condition, the damage or the disease of each part and the mechanism thereof are rarely deeply researched at home and abroad, and various adverse effects of vehicle load (especially heavy load) and the impact action thereof on the shallow underground pipe gallery structure under the actual traffic state are rarely considered. The knowledge of the deformation mechanism and the rule of the operation pipe gallery under the action of traffic load and the research of the allowable deformation control method are still insufficient. The design and construction of the utility tunnel in the engineering technical specification of the urban utility tunnel do not clearly specify how to consider the effects of the load of surrounding vehicles and the like. The structural safety in the deformation development process is measured by adopting which index, the problems of how to determine the control standard and the like are lack of achievements for engineering reference, and particularly the safety of the behaviour of the comprehensive pipe gallery structure in a soft soil area needs to be further and deeply researched. Prefabrication becomes the main direction of the structural design and development of underground comprehensive pipe galleries in recent years in China, and practical and theoretical requirements are provided for mechanical properties and control of the prefabricated comprehensive pipe galleries in soft soil foundations under the influence of traffic loads. Therefore, the system is necessary to research the dynamic response and the dynamic interaction mechanism of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load.
Through the above analysis, the problems and defects of the prior art are as follows: the prior art has not yet carried out the evaluation method that power pipe gallery nonlinear power and environment medium coupling carry out under the traffic load in soft soil ground.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for measuring the coupling of the nonlinear power of a pipe gallery and an environmental medium under traffic load.
The invention is realized in such a way that a method for measuring the coupling of the nonlinear power and the environmental medium of the pipe gallery under the traffic load comprises the following steps: through full-scale model tests, three-dimensional numerical models and theoretical researches, combined with field test verification, the dynamic response rule of a typical prefabricated pipe gallery structure in a soft soil foundation under the action of traffic load is determined, the energy transfer process of a soft soil-pipe gallery system under the action of traffic load is determined, and the stress mechanism, deformation, strength and rigidity characteristics of the prefabricated pipe gallery structure in the soft soil foundation are obtained; the method comprises the steps of constructing a dynamic response characteristic analysis model of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load, determining an analysis system and a calculation method of the structure of the prefabricated comprehensive pipe gallery of the soft soil foundation, determining a control index, and evaluating the coupling of the nonlinear power and an environment medium of the power pipe gallery in the soft soil foundation under the traffic load.
Further, the method for determining the nonlinear power and environment medium coupling of the pipe gallery under the traffic load further comprises the following steps: determining the dynamic response characteristic of a prefabricated comprehensive pipe gallery in a soft soil foundation under traffic load; determining an energy transfer and deformation mechanism of a prefabricated pipe gallery system in a soft soil foundation under a traffic load; and determining an analysis system and a calculation method of the underground comprehensive pipe gallery in the soft soil foundation under the traffic load, and evaluating the coupling of the nonlinear power and the environment medium of the power pipe gallery in the soft soil foundation under the traffic load.
Further, confirm that prefabricated utility tunnel power response characteristic includes in the soft soil foundation under the traffic load: based on a large scale model test, determining the dynamic response characteristic of a power interaction system of a typical structure of a prefabricated comprehensive pipe gallery under the action of traffic load, analyzing the longitudinal and transverse stress, deformation characteristics and change rules of the typical prefabricated assembled pipe gallery structure when relevant parameters change in terms of soil layer properties, vehicle load, vehicle dynamic load coefficient, pipe gallery-to-lane distance and pipe gallery earthing and burying depth, determining the response action mechanism, and establishing a dynamic response characteristic analysis model and a theoretical calculation method of the prefabricated comprehensive pipe gallery in a soft soil foundation under the traffic load.
Further, confirm that prefabricated pipe gallery system energy transfer and deformation mechanism include in the soft soil foundation under the traffic load: on the basis of a model test, based on an energy principle, three-dimensional fine modeling analysis is carried out on a soft soil-pipe gallery nonlinear system, the energy transfer process of the soft soil-pipe gallery system under the traffic load action is specifically researched, and the damage failure mechanism of a typical prefabricated pipe gallery structure stress deformation mode in a soft soil foundation including a pipe gallery typical joint structure is determined.
Further, the method for determining the underground comprehensive pipe gallery analysis system and calculating in the soft soil foundation under the traffic load comprises the following steps: based on an elastic-plastic theory and soil-pipe gallery interaction, the change rule of soil pressure and the change rule of the internal force of the prefabricated pipe gallery structure along with time are analyzed, the deformation, strength and rigidity characteristics of the prefabricated pipe gallery structure in the soft soil foundation are determined through refined finite element model numerical simulation analysis, an analysis system, a model and a calculation method of the prefabricated comprehensive pipe gallery structure of the soft soil foundation are established, and a control index is determined.
Further, the method for determining the nonlinear power and environment medium coupling of the pipe gallery under the traffic load comprises the following steps:
the method comprises the following steps that firstly, a dynamic loading test is carried out on a physical model, and the stress, displacement, deformation development mode and failure mechanism of the model under the action of traffic load are analyzed;
determining a modeling method of the prefabricated comprehensive pipe gallery under the condition of the soft soil foundation, and establishing a mechanical analysis model of the underground comprehensive pipe gallery structure; analyzing the change characteristic of the structural internal force of the prefabricated pipe gallery in the soft soil foundation under the influence of relevant factors under the action of asymmetric traffic load along with time through three-dimensional dynamic elastic-plastic finite element analysis;
step three, carrying out fine modeling analysis on the typical joint, systematically researching the stress and deformation of the typical joint under the action of asymmetric traffic load, and analyzing the damage failure mechanism and the joint failure mode of the pipe gallery joint;
and step four, establishing a solid model, analyzing the dynamic response characteristics of the typical structure of the prefabricated pipe gallery under the actual traffic load by utilizing physical simulation, comprehensively reflecting the dynamic characteristics of the three-dimensional space of the prefabricated pipe gallery in the soft soil foundation under the actual traffic load, and depicting the stress deformation characteristics of the three-dimensional full space of the pipe gallery structure.
Further, in the second step, the modeling method of the prefabricated comprehensive pipe gallery under the soft soil foundation condition comprises the selection of a soil body constitutive model, the determination of parameters of a concrete damage plastic model, the establishment of artificial boundary conditions, the simulation of soil-pipe gallery interaction and the input method of traffic load.
Another object of the present invention is to provide a program storage medium for receiving user input, the stored computer program causing an electronic device to execute the method for determining nonlinear dynamics of an administration corridor coupled with an environmental medium under traffic load, comprising the steps of:
the method comprises the following steps that firstly, a dynamic loading test is carried out on a physical model, and the stress, displacement, deformation development mode and failure mechanism of the model under the action of traffic load are analyzed;
determining a modeling method of the prefabricated comprehensive pipe gallery under the condition of the soft soil foundation, and establishing a mechanical analysis model of the underground comprehensive pipe gallery structure; analyzing the change characteristic of the structural internal force of the prefabricated pipe gallery in the soft soil foundation under the influence of relevant factors under the action of asymmetric traffic load along with time through three-dimensional dynamic elastic-plastic finite element analysis;
step three, carrying out fine modeling analysis on the typical joint, systematically researching the stress and deformation of the typical joint under the action of asymmetric traffic load, and analyzing the damage failure mechanism and the joint failure mode of the pipe gallery joint;
and step four, establishing a solid model, analyzing the dynamic response characteristics of the typical structure of the prefabricated pipe gallery under the actual traffic load by utilizing physical simulation, comprehensively reflecting the dynamic characteristics of the three-dimensional space of the prefabricated pipe gallery in the soft soil foundation under the actual traffic load, and depicting the stress deformation characteristics of the three-dimensional full space of the pipe gallery structure.
It is another object of the present invention to provide a computer program product stored on a computer readable medium, comprising a computer readable program for providing a user input interface for implementing the method for determining the nonlinear dynamic coupling of an access corridor with an environmental medium under traffic loads when executed on an electronic device.
Another object of the present invention is to provide an information data processing terminal, which is used for implementing the method for determining the nonlinear power and environmental medium coupling of the pipe gallery under the traffic load.
By combining all the technical schemes, the invention has the advantages and positive effects that: according to the invention, through full-scale model tests, three-dimensional numerical models and theoretical researches, combined with field test verification, the dynamic response rule of a typical prefabricated pipe gallery structure in a soft soil foundation under the action of traffic load is deeply researched, the energy transfer process of a soft soil-pipe gallery system under the action of traffic load is disclosed, and the stress mechanism, deformation, strength and rigidity characteristics of the prefabricated pipe gallery structure in the soft soil foundation are proved. The invention provides a dynamic response characteristic analysis model of a prefabricated comprehensive pipe gallery in a soft soil foundation under traffic load. The invention establishes an analysis theory and a calculation method of the soft soil foundation prefabricated comprehensive pipe gallery structure, provides design control indexes, and can provide theoretical basis for pipe gallery design, construction, structural condition risk assessment and the like.
Drawings
Fig. 1 is a schematic diagram of a method for determining nonlinear power and environmental medium coupling of a pipe gallery under traffic load according to an embodiment of the invention.
Fig. 2 is a flow chart of a method for determining nonlinear power coupling of a pipe gallery under traffic load and an environmental medium according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art, the invention provides a method for measuring the coupling between the nonlinear power of a pipe gallery and an environmental medium under traffic load, and the invention is described in detail below by combining the attached drawings.
As shown in fig. 1, the method for determining the nonlinear dynamic coupling of the pipe gallery under traffic load and the environmental medium provided by the embodiment of the invention comprises the following steps:
through full-scale model tests, three-dimensional numerical models and theoretical researches, combined with field test verification, the dynamic response rule of a typical prefabricated pipe gallery structure in a soft soil foundation under the action of traffic load is determined, the energy transfer process of a soft soil-pipe gallery system under the action of traffic load is determined, and the stress mechanism, deformation, strength and rigidity characteristics of the prefabricated pipe gallery structure in the soft soil foundation are obtained; the method comprises the steps of constructing a dynamic response characteristic analysis model of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load, determining an analysis system and a calculation method of the structure of the prefabricated comprehensive pipe gallery of the soft soil foundation, determining a control index, and evaluating the coupling of the nonlinear power and an environment medium of the power pipe gallery in the soft soil foundation under the traffic load.
The method for determining the coupling between the nonlinear power of the pipe gallery and the environmental medium under the traffic load further comprises the following steps:
determining the dynamic response characteristic of a prefabricated comprehensive pipe gallery in a soft soil foundation under traffic load; determining an energy transfer and deformation mechanism of a prefabricated pipe gallery system in a soft soil foundation under a traffic load; and determining an analysis system and a calculation method of the underground comprehensive pipe gallery in the soft soil foundation under the traffic load, and evaluating the coupling of the nonlinear power and the environment medium of the power pipe gallery in the soft soil foundation under the traffic load.
The method for determining the dynamic response characteristics of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load comprises the following steps:
based on a large scale model test, determining the dynamic response characteristic of a power interaction system of a typical structure of a prefabricated comprehensive pipe gallery under the action of traffic load, analyzing the longitudinal and transverse stress, deformation characteristics and change rules of the typical prefabricated assembled pipe gallery structure when relevant parameters change in terms of soil layer properties, vehicle load, vehicle dynamic load coefficient, pipe gallery-to-lane distance and pipe gallery earthing and burying depth, determining the response action mechanism, and establishing a dynamic response characteristic analysis model and a theoretical calculation method of the prefabricated comprehensive pipe gallery in a soft soil foundation under the traffic load.
The energy transfer and deformation mechanism for determining the prefabricated pipe gallery system in the soft soil foundation under the traffic load provided by the embodiment of the invention comprises the following steps:
on the basis of a model test, based on an energy principle, three-dimensional fine modeling analysis is carried out on a soft soil-pipe gallery nonlinear system, the energy transfer process of the soft soil-pipe gallery system under the traffic load action is specifically researched, and the damage failure mechanism of a typical prefabricated pipe gallery structure stress deformation mode in a soft soil foundation including a pipe gallery typical joint structure is determined.
The analysis system and the calculation method for determining the underground comprehensive pipe gallery in the soft soil foundation under the traffic load provided by the embodiment of the invention comprise the following steps:
based on an elastic-plastic theory and soil-pipe gallery interaction, the change rule of soil pressure and the change rule of the internal force of the prefabricated pipe gallery structure along with time are analyzed, the deformation, strength and rigidity characteristics of the prefabricated pipe gallery structure in the soft soil foundation are determined through refined finite element model numerical simulation analysis, an analysis system, a model and a calculation method of the prefabricated comprehensive pipe gallery structure of the soft soil foundation are established, and a control index is determined.
As shown in fig. 2, the method for determining the nonlinear dynamic coupling of the pipe gallery under traffic load and the environmental medium provided by the embodiment of the invention comprises the following steps:
s101, analyzing stress, displacement, deformation development modes and failure mechanisms of the model under the action of traffic loads by carrying out a dynamic loading test on the physical model;
s102, determining a modeling method of the prefabricated comprehensive pipe gallery under the condition of the soft soil foundation, and establishing a mechanical analysis model of the underground comprehensive pipe gallery structure; analyzing the change characteristic of the structural internal force of the prefabricated pipe gallery in the soft soil foundation under the influence of relevant factors under the action of asymmetric traffic load along with time through three-dimensional dynamic elastic-plastic finite element analysis;
s103, carrying out fine modeling analysis on the typical joint, systematically researching the stress and deformation of the typical joint under the action of asymmetric traffic load, and analyzing the damage failure mechanism and the joint failure mode of the pipe gallery joint;
s104, establishing a solid model, analyzing the dynamic response characteristics of the typical structure of the prefabricated pipe gallery under the actual traffic load by utilizing physical simulation, comprehensively reflecting the dynamic characteristics of the three-dimensional space of the prefabricated pipe gallery in the soft soil foundation under the actual traffic load, and describing the stress deformation characteristics of the three-dimensional full space of the pipe gallery structure.
The modeling method of the prefabricated comprehensive pipe gallery under the soft soil foundation condition comprises the steps of selecting a soil body constitutive model, determining parameters of a concrete damage plasticity model, establishing artificial boundary conditions, simulating soil-pipe gallery interaction and inputting traffic load.
The technical solution of the present invention is further described with reference to the following specific embodiments.
Example 1:
1.1 contents of the study
1) Study on dynamic response characteristics of prefabricated comprehensive pipe gallery in soft soil foundation under traffic load
Based on a large scale model test, the dynamic response characteristic of a power interaction system of a typical structure of a prefabricated comprehensive pipe gallery under the action of traffic load is researched, the longitudinal and transverse stress, deformation characteristics and change rules of the typical prefabricated assembled pipe gallery structure when relevant parameters change are analyzed from the aspects of soil layer properties, vehicle load, vehicle dynamic load coefficient, pipe gallery-to-lane distance, pipe gallery earthing and burying depth and the like, the response action mechanism of the typical prefabricated assembled pipe gallery structure is explored, and an analysis model and a theoretical calculation method for the dynamic response characteristic of the prefabricated comprehensive pipe gallery in a soft soil foundation under the traffic load are established.
2) Energy transfer and deformation mechanism research of prefabricated pipe gallery system in soft soil foundation under traffic load
On the basis of a model test, based on an energy principle, three-dimensional fine modeling analysis is carried out on a soft soil-pipe gallery nonlinear system, the energy transfer process of the soft soil-pipe gallery system under the action of traffic load is deeply researched, and the damage failure mechanism of a typical prefabricated pipe gallery structure in a soft soil foundation including a typical pipe gallery joint structure is proved.
3) Research on analysis theory and calculation method of underground comprehensive pipe gallery in soft soil foundation under traffic load
On the basis of the research, the change rule of soil pressure and the change rule of the internal force of the prefabricated pipe gallery structure along with time are systematically researched based on the elastoplasticity theory and the soil-pipe gallery interaction, the deformation, strength and rigidity characteristics of the prefabricated pipe gallery structure in the soft soil foundation are revealed through the numerical simulation analysis of a refined finite element model, the analysis theory, the model and the calculation method of the prefabricated comprehensive pipe gallery structure of the soft soil foundation are established, and design control indexes are provided.
1.2 objects of the study
According to the invention, through full-scale model tests, three-dimensional numerical models and theoretical researches, combined with field test verification, the dynamic response rule of a typical prefabricated pipe gallery structure in a soft soil foundation under the action of traffic load is deeply researched, the energy transfer process of a soft soil-pipe gallery system under the action of traffic load is disclosed, and the stress mechanism, deformation, strength and rigidity characteristics of the prefabricated pipe gallery structure in the soft soil foundation are proved. And providing a dynamic response characteristic analysis model of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load. And establishing an analysis theory and a calculation method of the soft soil foundation prefabricated comprehensive pipe gallery structure, and providing design control indexes to provide theoretical bases for pipe gallery design, construction, structural condition risk assessment and the like.
1.3 Key scientific problems to be solved
1) Dynamic response characteristic and energy transfer mechanism of soft soil foundation prefabricated pipe gallery nonlinear system under traffic load effect
In order to essentially understand and master the influence rule of the traffic load on the stress and deformation of the prefabricated assembled comprehensive pipe gallery structure in the soft soil foundation, the load characteristic is used for generating settlement, inclination, deflection and torsion on the horizontal direction and the longitudinal direction of the pipe gallery structure, and based on a model test, the research on the dynamic response characteristic of the pipe gallery and the energy transfer mechanism of a soft soil-pipe gallery nonlinear system is the key for establishing a comprehensive pipe gallery analysis model in the soft soil foundation under the traffic load.
2) Comprehensive pipe gallery analysis model in soft soil foundation and calculation method
Based on the interaction of the soil-pipe gallery structure, the relation between the soil pressure and the structural displacement deformation of the prefabricated assembly type comprehensive pipe gallery structure in the soft soil foundation under the traffic load effect is established, and a pipe gallery structure calculation optimization analysis model and an analysis method are established, so that the method is the key for establishing the analysis theory and the design method of the prefabricated pipe gallery in the soft soil foundation under the traffic load.
2. Research schemes to be adopted and feasibility analysis (including explanations of research methods, technical routes, experimental means, key technologies and the like);
2.1 study protocol
The invention aims to deeply research the stress and deformation characteristics of the prefabricated underground comprehensive pipe gallery in the soft soil foundation under the traffic load, particularly the influence of the asymmetric traffic load on the pipe gallery structure and corresponding deformation control indexes, and pay attention to the foundation, originality and interdisciplinary property of the research.
1) And the research method comprises the following steps:
(1) and (4) experimental study. Based on a similarity theory and an orthogonal test design theory, the design of an indoor model test is guided, and a stress, displacement, deformation development mode and a failure mechanism of the model under the action of traffic load are deeply researched by carrying out a dynamic loading test on a physical model.
(2) And (4) carrying out numerical simulation research. On the basis of a model test, a modeling method of a prefabricated comprehensive pipe gallery under the condition of a soft soil foundation is researched, wherein a mechanical analysis model of the underground comprehensive pipe gallery structure is established by selecting a soil body constitutive model, determining parameters of a concrete damage plasticity model, establishing artificial boundary conditions, simulating soil-pipe gallery interaction, inputting a traffic load and the like. Through three-dimensional dynamic elastoplasticity finite element analysis, the change characteristic of the internal force of the structure of the prefabricated pipe gallery under the action of asymmetric traffic load in the soft soil foundation under the influence of relevant factors along with time is researched. And carrying out fine modeling analysis on the typical joint, systematically researching the stress and deformation of the typical joint under the action of asymmetric traffic load, and analyzing the damage failure mechanism and the joint failure mode of the pipe gallery joint.
(3) And (5) theoretical research. In the process from inoculation, excitation to development of corridor deformation and damage in a soft soil foundation under asymmetric traffic load, nonlinear characteristics between elements in the system and interaction between the elements and an external system are deeply analyzed, and the damage and damage behaviors of the nonlinear power system in the process of space-time evolution are researched by adopting mutation and dynamics theories. And calculating the safety factor and the permanent displacement of the prefabricated assembled underground pipe gallery structure in the soft soil foundation under the action of the traffic load by adopting a strength reduction technology. The damage effect and the rule of the underground pipe gallery under the action of traffic load are deeply researched, and the damage and damage mechanism of the underground pipe gallery system is proved by combining theoretical calculation results and test data. And providing a comprehensive pipe gallery structure analysis and design method and control indexes in the soft soil foundation under the traffic load.
2) Means of experiment
On the basis of theoretical analysis, an entity model is established, the dynamic response characteristics of the typical structure of the prefabricated pipe gallery under the actual traffic load are analyzed by utilizing physical simulation, and the dynamic characteristics of the three-dimensional space of the prefabricated pipe gallery in the soft soil foundation under the actual traffic load are comprehensively reflected by mutual comparison, supplement and verification, so that the stress deformation characteristics of the three-dimensional full space of the pipe gallery structure are accurately described.
3) Key technology
(1) In order to reveal the integral stress characteristic of the pipe gallery structure in the soft soil foundation under the traffic load, a large-scale fabricated comprehensive pipe gallery structure test model is prepared to carry out a dynamic load test. How to determine the similarity relation and process the boundary condition of the model relates to the effect and the measurement precision of the model test.
(2) Based on the nonlinear theory and the interaction of the soft soil and the pipe gallery, a reasonable calculation mechanical analysis model of the three-dimensional structure of the prefabricated pipe gallery is established to research the nonlinear dynamic effect of the pipe gallery structure in the soft soil foundation under the traffic load effect, and the method is one of key technologies for essentially revealing the stress deformation rule of the prefabricated pipe gallery structure.
2.2 feasibility analysis
1) In the aspect of research foundation, project applicants and project group main members are engaged in scientific research works in the aspects of deformation and stability analysis of geotechnical and underground structures, geotechnical numerical simulation, seismic resistance of engineering structures and the like for a long time, undertake or participate in multiple national science foundation projects, Hunan province natural science foundation projects, provincial department level scientific and technical customs offense projects and other hall level projects related to the method, and have better theoretical foundation and research accumulation in the aspects of deformation and stability analysis of geotechnical and underground structures, multi-field coupling mechanism and model, fracture damage and progressive damage theory, numerical simulation, seismic resistance of engineering structures and the like.
2) In the aspect of academic thinking, the research of the invention not only attaches importance to the aging macroscopic mechanical response of the underground pipe gallery under the action of traffic load, but also attaches importance to the evolution of physical mechanism and structural characteristics on the microscopic scale; the modeling and the test of the three-dimensional fine mechanical physical model are emphasized, the modeling and the analysis of the three-dimensional fine numerical model are emphasized, the model test research and the theoretical analysis are emphasized, and the inherent unification of the model test, the numerical simulation and the theoretical analysis and the macro and the micro is realized.
3) In the aspect of research methods, the research of the invention adopts comprehensive research methods such as indoor tests, theoretical analysis, numerical simulation and the like through multidisciplinary leading-edge theoretical achievements such as soil absorption dynamics, underground engineering, damage fracture mechanics, mutation theory, nonlinear theory and the like, focuses on the combination of theoretical research and experimental research, the combination of qualitative description and quantitative analysis, the combination of macroscopic mechanical analysis and microscopic mechanism research, and the combination of numerical simulation and experimental verification, thereby providing a correct technical approach for the success of the research of the invention.
Therefore, through the cooperation of the project group, the comprehensive pipe gallery mechanical behavior in the soft soil foundation under the action of traffic load, the interaction mechanism of the soft soil and the structure and the design control are expected to make a breakthrough, and the expected research target is realized.
3. The invention has the characteristics and innovation;
3.1 features of the invention
The invention combines physical model test, three-dimensional numerical analysis and field test, develops the dynamic characteristics of the prefabricated comprehensive pipe gallery in the soft soil area under the action of traffic load and the research on the dynamic interaction of the soft soil and the pipe gallery under the action of mechanics, underground space engineering and other theoretical frames, and has distinct characteristics in theory and method.
(1) Based on theories such as a nonlinear theory, a soft soil-pipe gallery interaction and the like, a method of combining a three-dimensional fine physical mechanical model test and a three-dimensional fine numerical model is provided, the influence rule of multiple parameters on the structural performance of the pipe gallery is searched, a fine modeling theory of the pipe gallery in a soft soil foundation under the action of traffic load is established, the simulation of a pipe gallery damage mechanism is realized through a dynamic finite element method, and the pipe gallery structure and a shear connector damage mode and damage criterion thereof are disclosed;
(2) aiming at the dynamics problem of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load, a sudden change theory, damage fracture mechanics and a dynamics theory are adopted, the influence of the nonlinear effect of damage and damage of the pipe gallery and the dynamic coupling of an environmental medium is considered, and the stress characteristic and the working performance of the pipe gallery structure are revealed through theoretical analysis, finite element fine model analysis and experimental research. The method is used for researching a failure mechanism and a performance evaluation method of the prefabricated pipe gallery under the action of traffic load from a macroscopic level and a microscopic level, and establishing a design theory and a method of a prefabricated pipe gallery structure.
3.2 innovations of the invention
1) The dynamic reaction and the dynamic interaction of the soft soil and the pipe gallery of the prefabricated assembled underground pipe gallery in the soft soil foundation under the traffic load are researched for the first time, and the stress deformation mechanism and the failure mode of the pipe gallery structure of the soft soil foundation under the traffic load are disclosed;
2) the structure analysis theory of the prefabricated comprehensive pipe gallery is perfected, and an analysis model, a calculation technology and a design control method of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load are provided.
It should be noted that the embodiments of the present invention can be realized by hardware, software, or a combination of software and hardware. The hardware portion may be implemented using dedicated logic; the software portions may be stored in a memory and executed by a suitable instruction execution system, such as a microprocessor or specially designed hardware. Those skilled in the art will appreciate that the apparatus and methods described above may be implemented using computer executable instructions and/or embodied in processor control code, such code being provided on a carrier medium such as a disk, CD-or DVD-ROM, programmable memory such as read only memory (firmware), or a data carrier such as an optical or electronic signal carrier, for example. The apparatus and its modules of the present invention may be implemented by hardware circuits such as very large scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., or by software executed by various types of processors, or by a combination of hardware circuits and software, e.g., firmware.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for measuring the coupling of the nonlinear power and the environmental medium of a pipe gallery under traffic load is characterized by comprising the following steps: through full-scale model tests, three-dimensional numerical models and theoretical researches, combined with field test verification, the dynamic response rule of a typical prefabricated pipe gallery structure in a soft soil foundation under the action of traffic load is determined, the energy transfer process of a soft soil-pipe gallery system under the action of traffic load is determined, and the stress mechanism, deformation, strength and rigidity characteristics of the prefabricated pipe gallery structure in the soft soil foundation are obtained; the method comprises the steps of constructing a dynamic response characteristic analysis model of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load, determining an analysis system and a calculation method of the structure of the prefabricated comprehensive pipe gallery of the soft soil foundation, determining a control index, and evaluating the coupling of the nonlinear power and an environment medium of the power pipe gallery in the soft soil foundation under the traffic load.
2. The method for determining the nonlinear dynamic coupling of the pipe gallery under traffic load according to claim 1, wherein the method for determining the nonlinear dynamic coupling of the pipe gallery under traffic load and the environmental medium further comprises: determining the dynamic response characteristic of a prefabricated comprehensive pipe gallery in a soft soil foundation under traffic load; determining an energy transfer and deformation mechanism of a prefabricated pipe gallery system in a soft soil foundation under a traffic load; and determining an analysis system and a calculation method of the underground comprehensive pipe gallery in the soft soil foundation under the traffic load, and evaluating the coupling of the nonlinear power and the environment medium of the power pipe gallery in the soft soil foundation under the traffic load.
3. The method for determining nonlinear power and environmental medium coupling of a pipe gallery under traffic load according to claim 2, wherein the determining the dynamic response characteristics of the prefabricated comprehensive pipe gallery in the soft soil foundation under traffic load comprises: based on a large scale model test, determining the dynamic response characteristic of a power interaction system of a typical structure of a prefabricated comprehensive pipe gallery under the action of traffic load, analyzing the longitudinal and transverse stress, deformation characteristics and change rules of the typical prefabricated assembled pipe gallery structure when relevant parameters change in terms of soil layer properties, vehicle load, vehicle dynamic load coefficient, pipe gallery-to-lane distance and pipe gallery earthing and burying depth, determining the response action mechanism, and establishing a dynamic response characteristic analysis model and a theoretical calculation method of the prefabricated comprehensive pipe gallery in a soft soil foundation under the traffic load.
4. The method for determining nonlinear power and environmental medium coupling of a pipe gallery under traffic load according to claim 2, wherein the determining the energy transfer and deformation mechanism of the prefabricated pipe gallery system in the soft soil foundation under traffic load comprises: on the basis of a model test, based on an energy principle, three-dimensional fine modeling analysis is carried out on a soft soil-pipe gallery nonlinear system, the energy transfer process of the soft soil-pipe gallery system under the traffic load action is specifically researched, and the damage failure mechanism of a typical prefabricated pipe gallery structure stress deformation mode in a soft soil foundation including a pipe gallery typical joint structure is determined.
5. The method for determining nonlinear power and environmental medium coupling of the pipe gallery under traffic load according to claim 2, wherein the method for determining the analysis system and calculation method of the pipe gallery in soft soil foundation under traffic load comprises: based on an elastic-plastic theory and soil-pipe gallery interaction, the change rule of soil pressure and the change rule of the internal force of the prefabricated pipe gallery structure along with time are analyzed, the deformation, strength and rigidity characteristics of the prefabricated pipe gallery structure in the soft soil foundation are determined through refined finite element model numerical simulation analysis, an analysis system, a model and a calculation method of the prefabricated comprehensive pipe gallery structure of the soft soil foundation are established, and a control index is determined.
6. The method for determining the nonlinear power and environmental medium coupling of the traffic load pipe gallery according to claim 1, wherein the method for determining the nonlinear power and environmental medium coupling of the traffic load pipe gallery comprises the following steps:
the method comprises the following steps that firstly, a dynamic loading test is carried out on a physical model, and the stress, displacement, deformation development mode and failure mechanism of the model under the action of traffic load are analyzed;
determining a modeling method of the prefabricated comprehensive pipe gallery under the condition of the soft soil foundation, and establishing a mechanical analysis model of the underground comprehensive pipe gallery structure; analyzing the change characteristic of the structural internal force of the prefabricated pipe gallery in the soft soil foundation under the influence of relevant factors under the action of asymmetric traffic load along with time through three-dimensional dynamic elastic-plastic finite element analysis;
step three, carrying out fine modeling analysis on the typical joint, systematically researching the stress and deformation of the typical joint under the action of asymmetric traffic load, and analyzing the damage failure mechanism and the joint failure mode of the pipe gallery joint;
and step four, establishing a solid model, analyzing the dynamic response characteristics of the typical structure of the prefabricated pipe gallery under the actual traffic load by utilizing physical simulation, comprehensively reflecting the dynamic characteristics of the three-dimensional space of the prefabricated pipe gallery in the soft soil foundation under the actual traffic load, and depicting the stress deformation characteristics of the three-dimensional full space of the pipe gallery structure.
7. The method for determining the nonlinear power and environmental medium coupling of the pipe gallery under the traffic load according to claim 6, wherein in the second step, the method for modeling the prefabricated assembled comprehensive pipe gallery under the condition of the soft soil foundation comprises the steps of selecting a soil body constitutive model, determining parameters of a concrete damage plasticity model, establishing artificial boundary conditions, simulating the soil-pipe gallery interaction and inputting the traffic load.
8. A program storage medium for receiving user input, the stored computer program causing an electronic device to perform a method for determining nonlinear dynamics of an operator corridor coupled with an environmental medium under traffic load according to any of claims 1-7, comprising the steps of:
the method comprises the following steps that firstly, a dynamic loading test is carried out on a physical model, and the stress, displacement, deformation development mode and failure mechanism of the model under the action of traffic load are analyzed;
determining a modeling method of the prefabricated comprehensive pipe gallery under the condition of the soft soil foundation, and establishing a mechanical analysis model of the underground comprehensive pipe gallery structure; analyzing the change characteristic of the structural internal force of the prefabricated pipe gallery in the soft soil foundation under the influence of relevant factors under the action of asymmetric traffic load along with time through three-dimensional dynamic elastic-plastic finite element analysis;
step three, carrying out fine modeling analysis on the typical joint, systematically researching the stress and deformation of the typical joint under the action of asymmetric traffic load, and analyzing the damage failure mechanism and the joint failure mode of the pipe gallery joint;
and step four, establishing a solid model, analyzing the dynamic response characteristics of the typical structure of the prefabricated pipe gallery under the actual traffic load by utilizing physical simulation, comprehensively reflecting the dynamic characteristics of the three-dimensional space of the prefabricated pipe gallery in the soft soil foundation under the actual traffic load, and depicting the stress deformation characteristics of the three-dimensional full space of the pipe gallery structure.
9. A computer program product stored on a computer readable medium, comprising a computer readable program for providing a user input interface for implementing a method of determining nonlinear dynamic coupling of an operator corridor with an environmental medium according to any of claims 1-7 when executed on an electronic device.
10. An information data processing terminal, characterized in that the information data processing terminal is used for implementing the method for determining the nonlinear dynamic coupling of the pipe gallery and the environment medium under the traffic load according to any one of claims 1 to 7.
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