CN214614228U

CN214614228U - Multifunctional assembled subway station test model box

Info

Publication number: CN214614228U
Application number: CN202120022546.2U
Authority: CN
Inventors: 王志杰; 林嘉勇; 周飞聪; 周平; 李金宜; 姜逸帆; 杜逸文
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-11-05
Anticipated expiration: 2031-01-06

Abstract

The utility model discloses a multifunctional assembled subway station test model box, which is formed by splicing more than one totally-enclosed assembly module, more than one assembly module with a rectangular groove and a base; the totally enclosed assembly module is formed by assembling 1 enclosure guard plate, 2 stand columns, 2 cross beams and 2 steel plates; the assembly module with the rectangular groove is formed by assembling 1 enclosure plate with the rectangular groove, 2 stand columns, 2 cross beams and 2 steel plates. The assembly type modules are rigidly connected into a whole through the side upright columns and fixed on the steel base plate through bolts, and the steel base plate is welded on the profile steel support. The utility model discloses can assemble into the mold box of different functional demands fast, conveniently through the different combination forms of assembled module and test, can be used to foundation ditch excavation, subway station train vibration, earthquake load simulation experiment.

Description

Multifunctional assembled subway station test model box

Technical Field

The utility model belongs to the technical field of tunnel civil engineering test equipment technique and specifically relates to a multi-functional assembled subway station test model case.

Background

The construction of the subway station belongs to the process of excavation and unloading of a deep foundation pit, and inevitably influences the surrounding environment and the building. With the great advance of subway construction, the stratum of the subway station is more complex, and surrounding buildings are more dense, so that higher requirements are provided for the construction process of the subway station and the design of an enclosure structure. In addition, in the design process of the subway station, the influence of various loads such as train dynamic load, earthquake load and the like on the station structure and the surrounding soil body needs to be considered.

However, the existing geotechnical theory analysis method cannot completely meet the design requirements of large-scale complex engineering, and usually needs to be analyzed by means of tests, wherein the tests mainly comprise field tests, numerical tests and model tests. The actual parameter index can be obtained through field test, the result is reliable, but the cost is high, the period is long, and the repeatability is not high. The numerical test can simulate engineering construction under complex conditions and can be repeatedly carried out, but the selection of the constitutive model and the parameters has larger influence on results, and if the constitutive model and the parameters have poorer applicability, the obtained results have larger deviation, so the numerical test is generally used for reference of regularity. Compared with the prior art, the model test integrates the advantages of the model test and the model test, realizes the controllability of parameters and engineering conditions by reducing the size of the model in proportion and adopting a field soil body for testing, can obtain relevant rules of actual engineering, has repeatability and is widely applied.

In actual subway engineering, because of the complexity of engineering, a plurality of model boxes need to be designed for testing according to conditions, but the function of the existing model box is single, one model box can only be used for one experiment, and a plurality of model boxes need to be manufactured for a plurality of experiments, so that the time, the labor and the economy are wasted.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the background art, the utility model aims at providing a multi-functional assembled subway station test mold box aims at the different combination forms through the assembled module, and the mold box of different functional requirements is tested in the fast assembly.

In order to solve the technical problem, the technical scheme of the utility model is that:

a multifunctional assembled subway station test model box is formed by splicing more than one totally-enclosed assembly module, more than one assembly module with a rectangular groove and a base; the totally-enclosed assembly module is formed by assembling a surrounding guard plate, a plurality of stand columns, a plurality of cross beams, a bottom cross beam and a plurality of steel plates; the assembly module with the rectangular groove is formed by assembling a surrounding protection plate with the rectangular groove, a plurality of stand columns, a plurality of cross beams and a plurality of steel plates; the assembly type module is rigidly connected into a whole through the side upright post and the bolt; the assembling module is fixed on the steel bottom plate through bolts to form the model box; and the steel bottom plate is rigidly connected to the profile steel support through welding.

The totally enclosed assembly module is characterized in that a plurality of cross beams are connected with the enclosure plate through bolts, and a plurality of steel plates are welded with the upright posts, the cross beams and the bottom cross beam.

The plurality of cross beams with the rectangular groove assembly modules are connected with the rectangular groove enclosure plate through bolts, and the plurality of steel plates are formed by welding with the stand columns and the cross beams.

The quantity of the upright columns, the cross beams and the steel plates can be properly adjusted according to the rigidity required by the model test, and the pretightening force of the bolt can be properly adjusted according to the rigidity required by the model test.

The containment plate all adopt the high-strength high-transparency organic glass board with the thickness of 10mm, and the visual simulation test is realized.

The assembly module with the rectangular groove is arranged by considering the entrance and the exit of the subway station, and the vibration characteristics of the subway station and adjacent buildings are researched by simulating the ground falling vibration of the trolley running in the rectangular groove channel.

The upright columns, the cross beams and the side upright columns are all made of equal-edge angle steel with the thickness of 50mm x 5mm, and holes are drilled in advance.

The specific building process of the model box comprises the following steps:

step 1: the beam (bottom beam) is connected with the enclosure plate (with the rectangular groove enclosure plate) through a bolt, the steel plate and the beam (bottom beam) are welded and formed, and then the upright column, the beam (bottom beam) and the steel plate are welded and formed, so that the manufacturing of the totally enclosed assembly module (with the rectangular groove assembly module) is completed.

Step 2: the totally-enclosed assembly module (with the rectangular groove) is rigidly connected with the side upright posts into a whole through bolts, and then is rigidly connected with the steel base plate through bolts.

And step 3: with above-mentioned mold box according to the demand, through the welding with steel bottom plate rigid connection in shaped steel support, be fixed in shaking table department through shaped steel support fastener for the vibration load is applyed.

Through different combination forms of the assembly type modules, different model boxes can be built, and therefore research of multiple experiments is conducted, such as influences of foundation pit excavation on surface subsidence and adjacent building (structure), comparison and selection of foundation pit excavation building enclosures, influences of train dynamic load and seismic load on a station structure and surrounding soil bodies and the like. The following is a detailed description of the form of the model box for foundation pit excavation, train dynamic load and seismic load:

the foundation pit excavation model box adopts a totally enclosed assembly module, is connected with the side stand column and the steel bottom plate through bolts to form a whole, and is fixed on the section steel support through bolts.

The upper side of the train dynamic load model box adopts the assembly module with the rectangular groove, the lower side of the train dynamic load model box adopts the totally enclosed assembly module, the assembly module is connected with the side upright post and the steel bottom plate through bolts to form a whole, and then the assembly module is fixed on the section steel support through bolts.

The earthquake load model box adopts the totally enclosed assembly module, carries out inner boundary treatment, coats lubricant on the guard plate parallel to the vibration direction of the model box, sets an energy-absorbing cushion layer on the guard plate perpendicular to the vibration direction of the model box, enables the model box to be closer to the actual condition, is connected with the side stand column and the steel bottom plate through bolts to form a whole, and is fixed on the vibration table through bolts at last.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses totally enclosed assembled module can be prefabricated with take rectangular channel assembly module, and connects through the bolt, and the time of assembling of mold box that can significantly reduce also can be disassembled fast after having used up, has realized that it is high-efficient to save time.

2. The utility model discloses can realize the mold box preparation of different functions through the assembled module combination of difference, and the material can used repeatedly, can reduce cost, also can realize multi-functional application.

Drawings

Fig. 1 is a schematic structural view of the assembly type model box considering station entrance and exit of the utility model.

Fig. 2 is a schematic structural view of the totally enclosed assembled model box of the present invention.

Fig. 3 is a schematic view (assembly schematic view) of the fully enclosed assembly module according to the present invention.

Fig. 4 is a schematic structural diagram (schematic diagram after assembly) of the totally enclosed assembly module of the present invention.

Fig. 5 is a schematic structural view of the assembly module with rectangular grooves according to the present invention.

Fig. 6 is an assembly schematic diagram of the assembly module of the present invention.

In the figure: 1-enclosure plate, 2-enclosure plate with rectangular groove, 3-bolt, 4-column, 5-edge column, 6-beam, 7-bottom beam, 8-steel bottom plate, 9-steel support, 10-steel plate and 11-rectangular groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described with reference to the accompanying drawings and specific implementation methods.

As shown in fig. 1, 2, 3, 4, 5 and 6, the multifunctional assembled subway station test model box consists of totally-enclosed assembly modules and/or assembly modules with rectangular grooves, which have the same shape and size and the same connection mode, and a base; totally closed assembly module comprises a rectangle frame component and four apron boards 1, and this rectangle frame component comprises the same preceding, back, left and right side of structure again and stands the part and constitute, and wherein, preceding side stands the part structure and is: the bottom cross beams 7 of the two equal-edge angle steels are arranged along the horizontal direction and are arranged in an up-down symmetrical manner, the bending surfaces of the two angle steels are outward, a strip-shaped steel plate 10 on the left side is welded between the left ends of the vertical plates of the two cross beams 6 of the two angle steels, a strip-shaped steel plate 10 on the right side is welded between the right ends of the two cross beams 6 of the two angle steels, the left and right steel plates 10 are flush with the upper and lower surfaces of the cross beams 6, two upright columns 4 of the equal-edge angle steels are respectively welded on the left and right steel plates 10 and the cross beams 6 of the two angle steels, four equal-edge steel edge upright columns 5 are respectively connected and fixed between two adjacent side upright parts in the front, rear, left and right upright parts through bolts 3, and a row of bolt holes used for connecting with another totally-enclosed assembly module or an assembly module with a rectangular groove are uniformly distributed on the two bottom cross beams 7 of the two angle steels; the base is formed by welding a rectangular steel bottom plate 8 on a profile steel support 9; the rectangular frame type component is fixed on a steel bottom plate 8 of the base through bolts;

the four containment plates 1 are rectangular and are respectively the same as the front, rear, left and right side vertical components in shape and size, and the four containment plates 1 are respectively fixed on the inner surfaces of the front, rear, left and right side vertical components formed by the cross beams of the two angle steels and the inner surfaces of the two steel plates 10 through bolts;

the rectangular assembly module with the slots consists of one rectangular frame member, two containment sheets 1 and two containment sheets 2 with the rectangular slots; the two enclosure plates 2 with the rectangular grooves are fixed on the inner surfaces of two of the front, rear, left and right side vertical components through bolts.

In the front side vertical component, the angle steel of the cross beam 6 and the bottom cross beam 7 consists of a vertical plate and a horizontal plate. The directions of the bending surface of the angle steel, the inner surface of the angle steel and the inner side surfaces of the two steel plates 10 refer to the inner side and the outer side of a module formed by enclosing the front, the rear, the left and the right side vertical parts. Referring to fig. 3 and 4, a row of bolt holes are uniformly distributed on two bottom cross beams 7 of the two angle steels.

The utility model is formed by splicing a totally enclosed assembly module, an assembly module with a rectangular groove, a side upright post 5, a steel bottom plate 8 and a profile steel support 9; the totally enclosed type assembly module is assembled by apron board 1, a plurality of stand 4, a plurality of crossbeam 6, end crossbeam 7 and a plurality of steel sheet 10 and forms, take rectangular channel assembly module to assemble by taking rectangular channel apron board 2, a plurality of stand 4, a plurality of crossbeam 6 and a plurality of steel sheet 10 and form. The assembly type modules are rigidly connected into a whole through the side upright posts 5 and the bolts 3, the assembly type modules are rigidly connected to the steel bottom plate 8 to form the model box, and the steel bottom plate 8 is rigidly connected to the section steel support 9.

A plurality of cross beams 6 of the totally enclosed assembly module are connected with the enclosure plate 1 through bolts 3, and a plurality of steel plates 10 are formed by welding with the upright columns 4, the cross beams 6 and the bottom cross beam 7.

The plurality of cross beams 6 with the rectangular groove assembly modules are connected with the enclosure plate 2 with the rectangular groove through bolts 3, and the plurality of steel plates 10 are formed by welding with the upright posts 4 and the cross beams 6.

The quantity of the upright columns 4, the cross beams 6 and the steel plates 10 can be properly adjusted according to the rigidity required by a model test, and the pretightening force of the bolts 3 can be properly adjusted according to the rigidity required by the model test.

The specific building process of the model box comprises the following steps:

step 1: the cross beam 6 (bottom cross beam 7) is connected with the enclosure plate 1 (with the rectangular groove enclosure plate 2) through the bolts 3, the steel plate 10 and the cross beam 6 (bottom cross beam 7) are welded and formed, and then the upright column 4, the cross beam 6 (bottom cross beam 7) and the steel plate 10 are welded and formed, so that the manufacturing of the totally-enclosed assembly module (with the rectangular groove assembly module) is completed.

Crossbeam 6, end crossbeam 7 and stand 4 all adopt 50mm 5 mm's equilateral angle steel in this embodiment, and apron plate 1 and take rectangular channel apron plate 2 to adopt thickness to make for 10 mm's transparent ya keli board of excelling in, are convenient for observe experimental phenomenon, and steel sheet 10 adopts thickness to be 5 mm's steel sheet, and its size can be selected according to the experimental demand of model is nimble.

Step 2: the totally enclosed type assembly module (with the rectangular groove) is rigidly connected with the side upright post 5 into a whole through the bolt 3, and then is rigidly connected with the steel bottom plate 8 through the bolt 3.

In this embodiment, the steel bottom plate 8 is a steel plate with a thickness of 5mm, and the size of the steel bottom plate can be flexibly selected according to the requirements of model tests.

And step 3: and the model box is rigidly connected to the section steel support 9 through a bolt 3 according to requirements.

In the embodiment, different model boxes can be built through different combination forms of the assembly type modules, so that research of multiple experiments is performed, such as influence of foundation pit excavation on surface subsidence and adjacent buildings (structures), comparison and selection of foundation pit excavation building envelopes, influence of train dynamic load and seismic load on a station structure and surrounding soil bodies and the like. The following is a detailed description of the form of the model box for foundation pit excavation, train dynamic load and seismic load:

foundation ditch excavation mold box adopts totally enclosed assembly module in this embodiment, is connected through bolt 3 and limit stand 5, steel bottom plate 8 and forms wholly, then fixes on shaped steel support 9 through bolt 3, and shaped steel support passes through the fastener to be fixed on the shaking table.

In the embodiment, the upper side of the train dynamic load model box adopts an assembly module with a rectangular groove, the lower side of the train dynamic load model box adopts a totally enclosed assembly module (see figure 1), the assembly module is connected with a side upright post 5 and a steel bottom plate 8 through a bolt 3 to form a whole, and then the assembly module is fixed on a section steel support 9 through the bolt 3, the section steel support is fixed on a vibration table through a fastener and used for applying vibration load, two rectangular grooves 11 on two enclosure guard plates 2 with the rectangular grooves are used for simulating subway station inlet and outlet, and a trolley traveling in a channel of the rectangular grooves 11 simulates the vibration characteristic of subway vibration to the subway station and adjacent buildings; in an earthquake load test, a lubricating agent is coated on a guard plate parallel to the vibration direction of a model box, an energy-absorbing cushion layer is arranged on the guard plate vertical to the vibration direction of the model box, so that the model box is closer to the actual condition, and finally the guard plate is fixed on a vibration table through bolts.

Earthquake load mold box adopts totally enclosed assembly module in this embodiment, and interior border is handled, scribble emollient at the apron plate 1 that is on a parallel with mold box vibration direction, apron plate 1 at the perpendicular to mold box vibration direction sets up the energy-absorbing cushion, make the mold box more be close actual conditions, then through bolt 3 and side stand 5, steel bottom plate 8 is connected and is formed wholly, at last through welding with 8 rigid connection of steel bottom plate in shaped steel support 9, rethread shaped steel support 9 is fixed in shaking table department through the fastener, be used for the vibration load to apply.

Therefore, the model box of the multifunctional subway station can be quickly and conveniently manufactured in the embodiment through different combination forms of the assembly type modules.

The present invention has been described in detail with reference to the drawings and the embodiments, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.

Claims

1. A multifunctional assembled subway station test model box is characterized in that the model box consists of totally-enclosed assembly modules and/or assembly modules with rectangular grooves and a base, wherein the totally-enclosed assembly modules and/or the assembly modules are the same in shape and size and same in connection mode; the totally closed assembly module comprises a rectangular frame member and four apron boards (1), the rectangular frame member comprises front, back, left and right side vertical components with the same structure, wherein the front side vertical component structure is as follows: the bottom beams (7) of the two equal-edge angle steels are arranged along the horizontal direction and are arranged up and down symmetrically, the bending surfaces of the two angle steels are outward, a strip-shaped steel plate (10) at the left side is welded between the left ends of the two beams (6) of the two angle steels, a strip-shaped steel plate (10) at the right side is welded between the right ends of the two beams (6) of the two angle steels, the left and the right steel plates (10) are flush with the upper and the lower surfaces of the vertical plate of the beam (6), two upright columns (4) adopting equal-angle steel are respectively welded on the left and the right steel plates (10) and the beam (6) adopting the two angle steel, four equal-angle steel side upright columns (5) are respectively connected and fixed between two adjacent side upright parts in the front, the rear, the left and the right side upright parts through bolts (3), two bottom cross beams (7) of the two angle steels are uniformly provided with a row of bolt holes for connecting with another totally-enclosed assembly module or an assembly module with a rectangular groove; the base is formed by welding a rectangular steel bottom plate (8) on a profile steel support (9); the rectangular frame type component is fixed on a steel bottom plate (8) of the base through bolts;

the four containment plates (1) are rectangular and are respectively the same as the front, rear, left and right side vertical components in shape and size, and the four containment plates (1) are respectively fixed on the inner surfaces of the front, rear, left and right side vertical components formed by the cross beams of the two angle steels and the inner side surfaces of the two steel plates (10) through bolts;

the rectangular assembling module with the groove is composed of one rectangular frame type component, two containment sheets (1) and two containment sheets (2) with rectangular grooves; the two enclosure plates (2) with the rectangular grooves are fixed on the inner surfaces of two of the front, rear, left and right side standing parts through bolts.

2. The multifunctional assembled subway station test model box as claimed in claim 1, wherein said containment plate (1) and said containment plate with rectangular groove (2) are made of transparent organic glass plate or transparent acrylic plate with thickness of 10mm to realize the visualization of simulation test.

3. A multifunctional assembled subway station test model box according to claim 1, characterized in that, two equal angle steels and two columns (4) in the front side part of said rectangular frame member are both 50mm x 5mm equal angle steels, and the width and thickness of two steel plates (10) are 50mm x 5mm respectively; the side upright posts (5) are angle steel with 50mm x 5mm equal sides.

4. The multifunctional assembled subway station test model box as claimed in claim 1, wherein in the foundation pit excavation test, a totally enclosed assembly module is adopted; a profile steel support (9) of a base in the module is fixed on a vibration table through a fastener; in a brake dynamic load test, an assembly module with rectangular grooves is fixed on a totally-enclosed assembly module through bolts, the totally-enclosed assembly module is fixed on a base through bolts, a section steel support of the base is fixed on a vibration table through fasteners and used for applying vibration loads, two rectangular grooves (11) on two enclosure guard plates (2) with the rectangular grooves are used for simulating subway station inlets and outlets, and the vibration characteristics of subway vibration to the subway station and adjacent buildings are simulated through a travelling trolley in a channel of the rectangular grooves (11); in an earthquake load test, a lubricating agent is coated on a guard plate parallel to the vibration direction of a model box, an energy-absorbing cushion layer is arranged on the guard plate vertical to the vibration direction of the model box, so that the model box is closer to the actual condition, and finally the guard plate is fixed on a vibration table through bolts.

5. The multifunctional assembled subway station test model box as claimed in claim 1, wherein the number of the angle steels and steel plates (10) of the upright column (4), the cross beam (6) and the bottom cross beam (7) in said front side upright component is properly adjusted according to the boundary rigidity required by the model test, and the pretightening force of said bolt (3) is properly adjusted according to the rigidity required by the model test.