CN212989042U - Multifunctional structural pseudo-static test model groove - Google Patents
Multifunctional structural pseudo-static test model groove Download PDFInfo
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- CN212989042U CN212989042U CN202021945430.8U CN202021945430U CN212989042U CN 212989042 U CN212989042 U CN 212989042U CN 202021945430 U CN202021945430 U CN 202021945430U CN 212989042 U CN212989042 U CN 212989042U
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Abstract
The utility model relates to a multi-functional structure pseudo-static test model groove, divide four bibliographic categories including model groove main part, conversion system, auxiliary system and data acquisition system. The method is characterized in that flexible scaling of a scale of a structure-foundation-soil interaction type pseudo-static model test is achieved by moving a movable partition plate in a model groove, convenient conversion between a structure bottom consolidation type pseudo-static model test and a structure-foundation-soil interaction type pseudo-static model test is achieved by a conversion system, and the problem of boundary effect of the test is solved by paving flexible materials on the inner wall of the model groove. The utility model discloses the model test of structure or basis under the effect of the reciprocal load of mainly used level can test structure or the dynamic response value of basis under the effect of the reciprocal load of level to through being connected of sensor and data acquisition equipment, computer, realize the monitoring and the collection of the dynamic response value of structure or basic model under the effect of the reciprocal load of mound top, and realize the convenient conversion between different grade type pseudo-static test with the help of the comprehensive function of this equipment, it is high to have experimental space utilization, strong adaptability, test comprehensive advantage.
Description
Technical Field
The utility model relates to an indoor integrated model test system specifically indicates a multi-functional structure pseudo-static test model groove. The system can be used for testing the structure or foundation pseudo-static tests, and convenient conversion among different types of pseudo-static tests and flexible scaling of the basic pseudo-static test scale can be realized by means of the comprehensive functions of the system.
Background
With the development of economy in China, capital construction is highlighted as an important project for the national civilization. However, once these lifeline projects are destroyed in an earthquake, not only huge economic loss is brought, but also precious gold rescue time is delayed due to the interruption of the traffic network, and the occurrence of secondary disasters is aggravated. By taking only a few typical earthquakes at home and abroad in recent years as an example, a large number of structures suffer serious damage in the earthquake. Du Xiu Li and Hanqiang 2008 published in "5.12 Wen Chuan earthquake Zhongshan area highway bridge earthquake damage and enlightenment" of the university of Beijing university of Industrial science, mentioned the case of the Wen Chuan earthquake causing the damage of 6140 highway bridges in 2008. The study on the typical earthquake damage law of multi-story buildings in Wenchuan earthquake of 5.12 published by Xianchuan university of industry, Beijing, and the like introduces the situation that Wenchuan earthquake causes a large number of damaged buildings. The Jinlaijian et al, published in the "analysis of typical earthquake damage of single-layer reinforced concrete column factory buildings in Wen river earthquake" of the building structures science, introduced the situation that Wen river earthquake caused a large number of industrial factory buildings to be damaged. Therefore, the earthquake can not only cause the damage of industrial and civil buildings, but also cause the damage of traffic structures such as bridges and the like. Therefore, observing the damage characteristics of the structure under the action of an earthquake, researching the main earthquake-resistant performance index of the structure and providing an important theoretical basis for the accurate analysis and earthquake-resistant design of structures such as buildings, bridges and the like in earthquake areas; the quasi-static test realizes the purpose of simulating the damage characteristics and stress characteristics of the structure in reciprocating vibration during earthquake by applying circulating loads in positive and negative directions to the structure or a component, and the simulation result can provide valuable data for earthquake-proof design and disaster prevention and control of the structure in an earthquake area. The pseudo-static test can be divided into a field pseudo-static test and an indoor pseudo-static test. Compared with field tests, the indoor pseudo-static model test has the advantages of short test period, low cost and easiness in control, and therefore, the indoor pseudo-static model test becomes a test means commonly used by structural seismic researchers. Because the indoor pseudo-static model test is usually carried out in a laboratory, a test model groove system becomes indispensable important equipment for the test; at present, the structure pseudo-static test can be divided into two types, namely main body bottom consolidation and consideration of an upper structure-soil-foundation interaction system according to different consolidation parts of a model. And (3) in the pseudo-static test of the bottom consolidation of the main body, the interaction of foundation and soil is not considered, and the house or the pier which is reduced in a certain proportion is consolidated on the ground of the laboratory at the bottom of the model. And (3) considering a pseudo-static test of the interaction of the superstructure-soil-foundation, focusing on researching the interaction of the superstructure-soil-foundation, and placing the scaled model in an earthwork model groove. The above two types of pseudo-static tests are widely used for researching the anti-seismic performance of a structure, but the two types of tests are different in consolidation mode, so that the two types of tests are often carried out in respective sites, great difficulty is brought to laboratories, particularly laboratories with limited sites, and time and labor are often consumed when a huge actuator (a hydraulic jack providing horizontal reciprocating load) is repeatedly moved among different tests, so that the space utilization rate of the laboratories and the efficiency of grouping tests are obviously reduced. Meanwhile, the existing common geotechnical model groove can not realize the measurement of foundation deformation and soil pressure. Therefore, the utility model relates to a can implement the structure bottom consolidation type simultaneously and consider two types of pseudo-static model test of superstructure-soil-basic interaction type, effective test foundation deformation and the change of soil pressure, utilize comprehensive model groove system in laboratory space with the maximum efficiency, have very important meaning to deep research structure failure mechanism and anti-seismic performance under the earthquake effect.
SUMMERY OF THE UTILITY MODEL
For solving the defect that current pseudo-static force model test exists and not enough to realize two kinds of pseudo-static force test integrate, test in the basis warp and the test of soil pressure, laboratory space utilization and the maximize of test efficiency, the utility model aims at providing a multi-functional structure pseudo-static force test model groove. The system can realize the implementation of two types of pseudo-static model tests of a structure bottom consolidation type and an upper structure-soil-foundation interaction type and the free scaling of a basic pseudo-static test scale ratio, can also realize the real-time monitoring of variables such as soil pressure, basic displacement and the like in the test, and improves the space utilization rate of a laboratory and the efficiency of different types of pseudo-static model tests to the maximum extent.
The utility model adopts the technical proposal that:
the multifunctional structural pseudo-static test model groove comprises a model groove main body, a conversion system, an auxiliary system and a data acquisition system. The model groove main body is composed of a model groove front side wall (1), a model groove left side wall (2), a model groove rear side wall (3), a model groove right side wall (4), a movable partition plate (5), a model groove bottom plate (6) and a movable partition plate clamping groove (7). The method is characterized in that a foundation pit is excavated on the ground of a laboratory, concrete is adopted to pour a model groove front side wall (1), a model groove left side wall (2), a model groove rear side wall (3), a model groove right side wall (4) and a model groove bottom plate (6) along the inner wall of the foundation pit, movable partition plate clamping grooves (7) are reserved on the model groove left side wall (2) and the model groove right side wall (4), and a model groove main body is formed by inserting steel movable partition plates (5) into the movable partition plate clamping grooves (7). The size of the model groove can be changed by adjusting the position of the movable partition (5) between the movable partition clamping grooves (7), so that the purpose of adapting to different scales to compare with a basic model test is achieved. The conversion system is composed of a steel conversion backing plate (8), a conversion backing plate fixing hole (9) and a model fixing hole (10), and is characterized in that the conversion backing plate (8) is fixed on the bottom plate (6) of the mold groove through the conversion backing plate fixing hole (9) by means of a screw rod, and the bottom consolidation model is fixed on the conversion backing plate (8) through the model fixing hole (10). The convenient conversion of the structure bottom consolidation type and the pseudo-static model test considering two different types of structure-foundation-soil interaction types can be realized by installing and dismantling the conversion base plate (8). The auxiliary system is composed of a movable type clapboard inclined strut (11), an inclined strut bottom plate (12), an inclined strut top bolt (13), an inclined strut bottom bolt (14), an inclined strut anchoring plate (15) and a flexible material (16), and is characterized in that the top of the movable type clapboard inclined strut (11) is connected with the movable type clapboard (5) through the inclined strut top bolt (13), the bottom of the movable type clapboard inclined strut (11) is connected with the inclined strut bottom plate (12) in a welding mode, the inclined strut bottom plate (12) is fixed on the inclined strut anchoring plate (15) through the inclined strut bottom bolt (14), the rigidity and the stability of the movable type clapboard (5) can be enhanced through the movable type clapboard inclined strut (11), and the flexible material (16) is arranged around the inner wall of the model groove and used for reducing the boundary effect of the model groove. The data acquisition system consists of a soil pressure sensor (17), a soil pressure sensor lead protection tube (18), a displacement sensor stay wire protection tube (19), a sensor lead hole (20), a displacement sensor stay wire (21), a displacement sensor fixing frame base (22), a displacement sensor fixing frame (23), a stay wire type displacement sensor (24), a soil pressure sensor lead (25), a stay wire type displacement sensor lead (26), data acquisition equipment (27) and a computer (28), and is characterized in that one end of the displacement sensor stay wire (21) is connected to the side surface of a structure foundation (29), the other end of the displacement sensor stay wire protection tube (19) is connected to the stay wire type displacement sensor (24) fixed on the displacement sensor fixing frame (23), the soil pressure sensor (17) is adhered to the side surface of the structure foundation (29), and the soil pressure sensor lead (25) is led out through the soil pressure sensor lead protection tube (18), the soil pressure sensor lead protection tube (18) and the displacement sensor pull wire protection tube (19) penetrate through a sensor lead hole (20) on the movable partition plate (5) to be led out, and after the soil pressure sensor lead (25) and the pull wire type displacement sensor lead (26) are connected with data acquisition equipment (27), data acquisition and storage are achieved through a computer (28).
The utility model discloses an advantage is with the beneficial effect who produces:
1. the utility model overcomes conventional structure pseudo-static test model groove can't realize the structure bottom knot type simultaneously and consider the two types of pseudo-static model test's of superstructure-soil-basic interaction type shortcoming, but realize the lift of bottom knot type pseudo-static test model through setting up height-adjusting's backing plate and anchoring system in the test groove, installation and removal through conversion backing plate and anchoring system realize the free conversion of two types of pseudo-static test in the model inslot, and then realize integrating of two types of pseudo-static test, finally reach and save the laboratory space, shorten the cycle of classification test, improve test efficiency's purpose, be favorable to the implementation of classification test.
2. The utility model overcomes the unable shortcoming that changes the model groove volume of conventional structure pseudo-static test model groove realizes freely zooming of basic pseudo-static test scale ratio through the adjustment of movable baffle position.
3. The utility model overcomes the shortcoming of the basic displacement of the unable effective test in conventional structure pseudo-static test model groove, through the accurate survey to basic displacement in the stay-supported displacement sensor realization testing process.
4. The utility model overcomes the unable shortcoming of effective test basis lateral wall soil pressure in conventional structure pseudo-static test model groove realizes the real-time supervision of basis lateral wall soil pressure in the test process through dynamic soil pressure sensor.
5. The utility model discloses experimental model inslot portion has set up the segmentation and has separated the rigidity boundary effect that keeps off and flexible material can effectively reduce in the different scale model test processes.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a structural elevation view of the present invention;
fig. 3 is an elevation view of the present invention;
fig. 4 is an appearance side view of the present invention.
Detailed Description
The invention is further explained with reference to the drawings as follows:
as shown in fig. 1-4, the multifunctional structure pseudo-static test model groove comprises a model groove main body, a conversion system, an auxiliary system and a data acquisition system. The model groove main body is composed of a model groove front side wall (1), a model groove left side wall (2), a model groove rear side wall (3), a model groove right side wall (4), a movable partition plate (5), a model groove bottom plate (6) and a movable partition plate clamping groove (7). The simulation test device is characterized in that a model groove front side wall (1), a model groove left side wall (2), a model groove rear side wall (3), a model groove right side wall (4) and a model groove bottom plate (6) are formed by pouring concrete, the position of a movable partition plate (5) is adjusted by means of a movable partition plate clamping groove (7) to change the volume of the model groove, and then the implementation of different reduced scale proportion basic pseudo-static force model tests is realized. In order to ensure the stability of the movable partition (5), the movable partition diagonal brace (11) is adopted to support the movable partition (5), and the width of the movable partition clamping groove (7) is easy to control to be 1.5-2 cm. The conversion system is composed of a steel conversion backing plate (8), a conversion backing plate fixing hole (9) and a model fixing hole (10), and is characterized in that a screw penetrates through the conversion backing plate fixing hole (9) to fix the conversion backing plate (8) on the bottom plate (6) of the mold groove, and a bottom consolidation model is fixed on the conversion backing plate (8) by penetrating through the model fixing hole (10) through the screw. The height of the bottom consolidation model can be adjusted by increasing or decreasing the number of the conversion base plates (8), and the convenient conversion of the structure bottom consolidation type and the pseudo-static tests of two types of different types considering the structure-foundation-soil interaction type can be realized by installing and removing the conversion base plates (8), so that the purpose of effectively utilizing the laboratory space is achieved. The auxiliary system consists of a movable clapboard diagonal brace (11), a diagonal brace bottom plate (12), a diagonal brace top bolt (13), a diagonal brace bottom bolt (14), a diagonal brace anchoring plate (15) and a flexible material (16), the concrete formwork is characterized in that the top of a movable partition plate diagonal brace (11) is connected with a movable partition plate (5) through a diagonal brace top bolt (13), the bottom of the movable partition plate diagonal brace (11) is connected with a diagonal brace bottom plate (12) in a welding mode, the diagonal brace bottom plate (12) is fixed on a diagonal brace anchoring plate (15) through a diagonal brace bottom bolt (14), the diagonal brace anchoring plate (15) is pre-embedded in concrete of a formwork groove bottom plate (6), the rigidity and the stability of the movable partition plate (5) can be enhanced through the movable partition plate diagonal brace (11), a polyethylene foam plate with good elasticity can be selected from flexible materials (16) and laid around the inner wall of a formwork groove to reduce the boundary effect of the formwork groove, and the thickness of the foam plate is 10-15 cm. The data acquisition system consists of a soil pressure sensor (17), a soil pressure sensor lead protection tube (18), a displacement sensor stay wire protection tube (19), a sensor lead hole (20), a displacement sensor stay wire (21), a displacement sensor fixing frame base (22), a displacement sensor fixing frame (23), a stay wire type displacement sensor (24), a soil pressure sensor lead wire (25), a stay wire type displacement sensor lead wire (26), data acquisition equipment (27) and a computer (28), and is characterized in that one end of the displacement sensor stay wire (21) is connected to the side surface of a structure foundation (29), the other end of the displacement sensor stay wire protection tube (19) penetrates through the displacement sensor stay wire protection tube (19) to be connected to the stay wire type displacement sensor (24) fixed on the displacement sensor fixing frame (23), and the displacement sensor stay wire protection tube (19) can effectively eliminate friction between the displacement sensor stay wire (21) and filled soil in the, the purpose of improving the testing precision is achieved, the soil pressure sensor (17) is adhered to the side face of a structure foundation (29), a soil pressure sensor lead (25) penetrates through a soil pressure sensor lead protection tube (18) to be led out, the soil pressure sensor lead protection tube (18) and a displacement sensor pull wire protection tube (19) penetrate through a sensor lead hole (20) in the movable partition plate (5) to be led out, and after the soil pressure sensor lead (25) and a pull wire type displacement sensor lead (26) are connected with data acquisition equipment (27), data acquisition and storage are achieved through a computer (28).
Claims (4)
1. Multifunctional structure pseudo-static test model groove, including model groove main part, conversion system, auxiliary system and data acquisition system four bibliographic categories branch, its characterized in that:
the model groove main body comprises a model groove front side wall (1), a model groove left side wall (2), a model groove rear side wall (3), a model groove right side wall (4), a movable partition plate (5), a model groove bottom plate (6) and a movable partition plate clamping groove (7), and is characterized in that the model groove front side wall (1), the model groove left side wall (2), the model groove rear side wall (3), the model groove right side wall (4) and the model groove bottom plate (6) are formed by pouring concrete, the movable partition plate (5) is made of a steel plate, the width of the movable partition plate clamping groove (7) is easy to control between 1.5 and 2cm, the size of the model groove can be changed by adjusting the position of the movable partition plate (5) on the movable partition plate clamping groove (7), and further free scaling of the scaling scale of the basic static force simulation model test is realized;
the conversion system comprises a steel conversion backing plate (8), conversion backing plate fixing holes (9) and model fixing holes (10), and is characterized in that the conversion backing plate (8) is fixed on a bottom plate (6) of a mold groove through the conversion backing plate fixing holes (9) by means of a screw rod to form a base of a bottom consolidation type model, the bottom consolidation type model is fixed on the conversion backing plate (8) through the model fixing holes (10), the conversion backing plate (8) is made of a steel plate and is 10-15cm thick, and convenient conversion between bottom consolidation type simulation static tests and simulated static tests considering two different types of structure-foundation-soil interaction type can be realized by mounting and dismounting the conversion backing plate (8);
the auxiliary system comprises a movable separator diagonal brace (11), a diagonal brace bottom plate (12), diagonal brace top bolts (13), diagonal brace bottom bolts (14), a diagonal brace anchoring plate (15) and flexible materials (16), and is characterized in that the top of the movable separator diagonal brace (11) is connected with the movable separator (5) through the diagonal brace top bolts (13), the bottom of the movable separator diagonal brace (11) is connected with the diagonal brace bottom plate (12) in a welding manner, the diagonal brace bottom plate (12) is fixed on the diagonal brace anchoring plate (15) through the diagonal brace bottom bolts (14), the diagonal brace anchoring plate (15) is embedded in concrete of the model tank bottom plate (6), the rigidity and stability of the movable separator (5) can be enhanced through the movable separator diagonal brace (11), and the flexible materials (16) are laid around the inner wall of the model tank;
the data acquisition system comprises a soil pressure sensor (17), a soil pressure sensor lead protection tube (18), a displacement sensor stay wire protection tube (19), a sensor lead hole (20), a displacement sensor stay wire (21), a displacement sensor fixing frame base (22), a displacement sensor fixing frame (23), a stay wire type displacement sensor (24), a soil pressure sensor lead wire (25), a stay wire type displacement sensor lead wire (26), data acquisition equipment (27) and a computer (28), and is characterized in that one end of the displacement sensor stay wire (21) is connected to the side surface of a structure foundation (29), the other end of the displacement sensor stay wire protection tube (19) is connected to the stay wire type displacement sensor (24) fixed on the displacement sensor fixing frame (23), the soil pressure sensor (17) is adhered to the side surface of the structure foundation (29), and the soil pressure sensor lead wire (25) is led out through the soil pressure sensor lead protection tube (18), the soil pressure sensor lead protection tube (18) and the displacement sensor pull wire protection tube (19) penetrate through a sensor lead hole (20) on the movable partition plate (5) to be led out, and after the soil pressure sensor lead (25) and the pull wire type displacement sensor lead (26) are connected with data acquisition equipment (27), data acquisition and storage are achieved through a computer (28).
2. The multifunctional structure pseudo-static test model groove as claimed in claim 1, characterized in that the volume of the model groove can be changed by changing the position of the movable partition (5) on the movable partition clamping groove (7), thereby realizing flexible scaling considering the structure-foundation-soil interaction type pseudo-static test scale.
3. A multifunctional structural pseudo-static test model groove as defined in claim 1, characterized in that the convenient conversion between the bottom fastening type and the pseudo-static test of two different types considering the structure-foundation-soil interaction type can be realized by installing and removing the conversion backing plate (8).
4. The multifunctional structural pseudo-static test model groove as claimed in claim 1, wherein segmented baffles and flexible materials are arranged in the model groove, so that rigid boundary effects in the test process of different scale reduction models can be effectively reduced.
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| CN202021945430.8U CN212989042U (en) | 2020-09-08 | 2020-09-08 | Multifunctional structural pseudo-static test model groove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912711A (en) * | 2020-09-08 | 2020-11-10 | 兰州交通大学 | Comprehensive model groove system for structure pseudo-static test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912711A (en) * | 2020-09-08 | 2020-11-10 | 兰州交通大学 | Comprehensive model groove system for structure pseudo-static test |
| CN111912711B (en) * | 2020-09-08 | 2024-04-12 | 兰州交通大学 | Comprehensive model groove system for structure quasi-static test |
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