CN112985993A - Wall horizontal loading test device and use method thereof - Google Patents
Wall horizontal loading test device and use method thereof Download PDFInfo
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- CN112985993A CN112985993A CN202110384143.7A CN202110384143A CN112985993A CN 112985993 A CN112985993 A CN 112985993A CN 202110384143 A CN202110384143 A CN 202110384143A CN 112985993 A CN112985993 A CN 112985993A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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Abstract
The invention discloses a wall horizontal loading test device and a use method thereof, wherein the wall horizontal loading test device comprises a restraint frame and at least two lateral support frames, the restraint frame penetrates through the middles of the lateral support frames, and the lateral support frames are arranged in parallel; the constraint frame comprises a loading beam, a ground beam and two edge columns, wherein the two edge columns are respectively arranged at the left edge and the right edge of the loading beam, the loading beam is connected with the ground beam through the two edge columns to obtain a rectangular constraint frame, and a plurality of sliding clamping devices are arranged on the inner side of the lateral support frame and are used for controlling the movement direction of the constraint frame; according to the invention, the loading beam and the ground beam which can be repeatedly used are arranged to serve as the loading part and the fixing part, so that the complicated work of pouring the loading beam and the ground beam in the current horizontal loading test of the wall body is solved, the component manufacturing difficulty is simplified, and the component manufacturing cost and the component manufacturing time are saved.
Description
Technical Field
The invention belongs to the technical field of building test devices, and particularly relates to a wall horizontal loading test device and a use method thereof.
Background
The bearing capacity and the deformation energy consumption performance of the wall body in the high-rise building are important factors influencing the bearing safety of the high-rise building, so that the experimental study on the bearing capacity and the deformation energy consumption of the wall body is of great importance. And the horizontal loading test of the wall body is required to be carried out to research the bearing capacity and the energy consumption performance of the wall body. The existing horizontal loading test of the reinforced concrete wall in the laboratory is rough, usually, a reaction beam and a ground beam are directly poured on the reinforced concrete wall, and the reaction beam is horizontally loaded, and the special reusable reaction beam and ground beam are not used, so that the reinforced concrete wall is long in manufacturing time, high in manufacturing cost and large in manufacturing difficulty; secondly, the restraint effect of edge members such as beams and columns around the wall body on the wall body in actual use is not considered in most of the existing horizontal loading tests of the reinforced concrete wall, the steel plate shear wall and the masonry wall, and the restraint effect is very important for the research of the deformation energy consumption performance of the wall body, so the restraint is considered when the wall body test research is carried out; finally, because the horizontal loading test of the wall body belongs to the in-plane test, the device is needed to limit the displacement of the wall body out of the plane, and the existing device is heavy and is not convenient and flexible to disassemble and assemble.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a wall horizontal loading test device and a use method thereof, which can be used for carrying out horizontal loading tests on a reinforced concrete shear wall, a masonry wall and a steel plate shear wall, and solve the problem that the constraint effect of an edge member on the wall cannot be considered in the conventional common wall anti-seismic horizontal loading test.
In order to achieve the purpose, the invention provides the following technical scheme: a horizontal loading test device for a wall comprises a restraint frame and at least two lateral support frames, wherein the restraint frame penetrates through the middles of the lateral support frames, and the lateral support frames are arranged in parallel; the restraint frame comprises a loading beam, a ground beam and two edge columns, wherein the two edge columns are arranged on the left edge and the right edge of the loading beam respectively, the loading beam is connected with the ground beam through the two edge columns to obtain the rectangular restraint frame, a plurality of sliding clamping devices are arranged on the inner side of the lateral support frame, and the sliding clamping devices are used for controlling the movement direction of the restraint frame.
Furthermore, hinged plates are connected to the lower end face of the loading beam, the upper end face of the ground beam and the end faces of the two ends of the edge columns, and pin bolts are arranged among the hinged plates and used for achieving hinged connection of the loading beam, the ground beam and the two edge columns.
Furthermore, the hinged plates are fixed on the loading beam and the ground beam through bolts, the hinged plates are welded and fixed on the end faces of the two ends of the edge column, and the positions of the hinged plates fixed on the loading beam and the ground beam are adjustable.
Further, the ground beam and the inner side of the edge column are provided with bolt holes, and the bolt holes are used for being in bolt connection with embedded bolt rods in the precast concrete cushion blocks.
Furthermore, the side of grade beam, edge post all is equipped with the hole of a plurality of wrist thickness, the hole is used for making things convenient for the staff to stretch into and carries out bolted connection and the dismantlement between precast concrete cushion and grade beam, the edge post.
Furthermore, the lateral support frame comprises two vertically arranged H-shaped steel columns and a T-shaped short beam connected with the two H-shaped steel columns, the T-shaped short beam is fixedly connected to the tops of the H-shaped steel columns, a plurality of groups of bolt holes are formed in the H-shaped steel columns in the height direction, and the sliding clamping device is connected with the H-shaped steel columns through bolts.
Further, the sliding clamping device is two pulley blocks which are oppositely arranged on the inner side of the lateral support frame, each pulley block comprises a rubber wheel, a connecting rod, an axle center rod and a three-side enclosing plate, the rubber wheel is sleeved on the axle center rod, the rubber wheels can rotate around the axle center rods, the axle center rods are fixed on the rubber wheel bases, the rubber wheel bases are connected with the three-side enclosing plates through the connecting rods, the three-side enclosing plates are fixed on the lateral support frame, and the connecting rods are in threaded connection with the rubber wheel bases and the three-side enclosing plates.
Further, the sliding clamping device is fixed on the lateral supporting frame through bolts.
Furthermore, one end of the loading beam is provided with a connecting plate.
The invention also provides a use method of the wall horizontal loading test device, when in use, the ground beam is fixed on the ground, the loading beam, the ground beam and the two edge columns form a constraint frame, and the periphery of the wall is clamped and constrained by the assembled constraint frame; and assembling the lateral support frame according to the size of the restraint frame, wherein the restraint frame penetrates through the middle of the lateral support frame, the bottom of the lateral support frame is fixed on the ground, and meanwhile, a sliding clamping device on the lateral support frame clamps the loading beam to ensure that the wall body is displaced in the plane of the wall body.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention provides a wall horizontal loading test device which can carry out horizontal loading tests on a reinforced concrete wall and a masonry wall, wherein a loading beam and a ground beam in a constraint frame can serve as an upper reinforcing beam and a lower ground beam which are poured in the reinforced concrete wall, and the constraint frame can play a hoop role on a wall body so as to simulate the constraint effect of members such as beam columns and the like around the wall body on the wall body in actual engineering use, so that the test research on the horizontal loading of the wall body can be more refined and is closer to the actual engineering; meanwhile, through the matching between the sliding clamping device on the lateral supporting frame and the constraint frame, the free displacement of the wall body in a plane can be more conveniently and more flexibly ensured, the displacement outside the plane of the wall body can be limited, the test is ensured to be always carried out in the plane, the complicated work of pouring a loading beam on the upper part of the reinforced concrete wall and pouring a ground beam on the bottom of the wall is avoided, the test process is simplified, and the test cost is saved.
Furthermore, the hinged plate is connected with the loading beam, the ground beam and the edge column through bolts, and the installation positions of the edge column on the loading beam and the ground beam can be changed by adjusting the bolt connection positions of the hinged plate on the loading beam and the ground beam, so that the size of the restraint frame can be adjusted according to the width of the wall body.
Furthermore, the connecting length of the two ends of the connecting rod in the pulley block is adjustable, so that the distance between the rubber wheel and the three-side coaming can be controlled, the two rubber wheels can be conveniently clamped with the restraint frame, and the pulley block is flexible and convenient to use.
Furthermore, all the components are connected through bolts or pins, so that the structure is simple, the use is simple, and the disassembly and the assembly are convenient.
Drawings
FIG. 1 is a schematic external view of a loading device;
FIG. 2 is a schematic view of a restraint frame.
Fig. 3 is a schematic view of a lateral support frame.
Fig. 4 is a detailed schematic view of the pulley block in the lateral support frame.
In the figure, 1, a connecting plate, 2, a loading beam, 3, a ground beam, 4, an edge column, 5, an I-shaped column, 6, a T-shaped short beam, 7, a pulley block, 8, a hinged plate, 9, a pin bolt, 10, a rubber wheel, 11, a connecting rod, 12, an axis rod and 13 are provided with three side boards.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the device is divided into two parts, wherein the first part is a restraint frame, the second part is a lateral support frame, the restraint frame penetrates through the middle of the two lateral support frames, at least two lateral support frames are arranged, and the two lateral support frames need to be arranged in parallel.
The lateral support frame is provided with a sliding clamping device which clamps the restraint frame, so that the restraint frame can perform horizontal displacement in a plane on a wall generating surface, and the displacement of the restraint frame outside the plane of the wall is limited.
As shown in FIG. 2, the restraint frame comprises an upper loading beam 2, a lower ground beam 3 and two edge columns 4 arranged between the loading beam 2 and the ground beam 3 in parallel, wherein the two edge columns 4 are respectively arranged on the left side and the right side of the loading beam 2, hinge plates 8 are respectively connected to the loading beam 2, the ground beam 3 and the edge columns 4 through bolts, the positions of the hinge plates 8 on the loading beam 2 and the ground beam 3 are adjustable, and the hinge plates 8 are hinged to the loading beam 2, the ground beam 3 and the two edge columns 4 through bolts 9.
Preferably, the distance between the two edge columns 4 can be adjusted by adjusting the positions of the hinged plates 8 on the loading beam 2 and the ground beam 3, the constraint frame can adapt to different wall body width sizes by adjusting the distance between the two edge columns 4, and a precast concrete cushion block can be additionally filled between the wall body and the two edge columns 4 to achieve the width fine adjustment function, so that the dimension error caused by wall body manufacturing and test use is adapted;
preferably, the height of the edge column 4 is determined according to the height of a common wall test member, the height of the edge column is generally not changed, and when the height of the edge column 4 is too high, the height of the edge column 4 can be adapted by additionally arranging a precast concrete block embedded with bolts between the wall and the ground beam 3;
preferably, the edge columns 4 can also be determined to have several common heights according to the test sizes of the current common wall, that is, a plurality of pairs of edge columns 4 with the common heights need to be designed to adapt to the walls with different heights, so that the edge columns can be conveniently replaced during the test.
Preferably, one end of the loading beam 2 is welded with the connecting plate 1, so that the loading beam can be conveniently connected with loading machines such as a hydraulic machine in a laboratory.
Preferably, the ground beam 3 and the edge column 4 in the restraint frame are provided with a plurality of bolt holes on the inner side contacting with the wall body, and the bolt holes are used for realizing bolt connection with embedded bolt rods in the precast concrete cushion blocks.
Preferably, holes with the thickness of the wrist are formed in the outer sides, which are not in contact with the wall, of the ground beam 3 and the edge columns 4 of the restraint frame, so that the bolts can be conveniently detached by extending hands.
As shown in fig. 3, the lateral support frame includes two i-shaped steel columns 5 perpendicular to the ground and a T-shaped short beam 6, the two i-shaped steel columns 5 are vertically fixed on the ground and parallel to each other, the T-shaped short beam 6 is fixed on the tops of the two i-shaped steel columns 5 through bolts, the two i-shaped steel columns 5 are respectively fixed with a pulley block 7 through bolts, the two pulley blocks 7 are oppositely arranged, the heights of the two pulley blocks 7 are the same as the height of the loading beam 2, and the two pulley blocks 7 clamp the loading beam 2 for controlling the movement direction of the wall surface;
preferably, a plurality of bolt holes are formed in the height direction of the I-shaped steel column 5 of the lateral support frame, so that the position of the pulley block 7 can be conveniently adjusted according to the height of the loading beam 2, and the pulley block 7 can be conveniently added to clamp a wall body.
The concrete structure of the pulley block 7 is as shown in fig. 4, and comprises a rubber wheel 10, a connecting rod 11, an axis rod 12 and a three-side coaming plate 13, wherein the rubber wheel 10 is sleeved on the axis rod 12, the rubber wheel 10 can rotate around the axis rod 12, the axis rod 12 is arranged on a rubber wheel base, the rubber wheel base is connected with the three-side coaming plate 13 through the connecting rod 11, the three-side coaming plate 13 is fixed on an I-shaped column through a bolt, and the rolling direction of the rubber wheel 10 is the same as the movement direction of the restraint frame.
Preferably, connecting threads are arranged at two ends of the connecting rod 11, two ends of the connecting rod 11 are respectively connected with the rubber wheel base and the three-side coaming 13 through bolts, and the distance between the two opposite pulley blocks 7 is adjusted by adjusting the threaded connection distance at two ends of the connecting rod 11, so that the clamping restraint frame is ensured.
The pulley blocks 7 are arranged at a plurality of mounting positions on the I-shaped steel column 5, a plurality of pulley blocks 7 in opposite directions can be mounted on the I-shaped steel column 5 along the height, and when the two pulley blocks 7 at the top clamp the loading beam 2, the two pulley blocks 7 at the middle can also clamp the wall body, so that the restraint frame and the wall body are better restrained in a plane.
Preferably, all the components of the restraint frame, the lateral support frame and the pulley block are made of steel.
The invention provides a using method of a wall horizontal loading experimental device, which comprises the following steps:
when a horizontal loading test of a reinforced concrete wall and a masonry wall is carried out, when the horizontal loading test is used, a ground beam 3 is fixed on the ground, then the installation positions of edge columns 5 on the ground beam 3 and a loading beam 2 are selected according to the width of the wall, whether precast concrete blocks need to be plugged between the wall and the ground beam 3 and between the wall and the edge columns 4 is judged according to installation measurement, if plugging is needed, the precast concrete blocks are firstly connected with the ground beam 3 through bolts, then the wall is placed on the upper portion of the precast concrete blocks at the bottom, and then the edge columns 4 with the precast concrete blocks installed on the inner sides are installed on the two sides of the ground beam 3 to clamp the wall;
meanwhile, arranging a lateral support frame formed by connecting an I-shaped steel column 5 and a T-shaped short beam 6 in advance at corresponding positions (at least 2) of a restraint frame, fixing the bottom of the I-shaped steel column 5 by bolts, then installing a group of pulley blocks 7 with adjusted opposite intervals on a middle clamping wall of the lateral support frame, finally installing a loading beam 2 to clamp the wall, installing another group of pulley blocks 7 on the lateral support frame at the height of the loading beam 2 to clamp the loading beam 2, and completing the installation of the experimental device;
a loading machine such as a hydraulic machine is connected to the connecting plate 1 at the end part of the loading beam 2 through a bolt to carry out a horizontal force loading test. During the test, the wall body and the restraint frame can generate horizontal displacement in a plane to drive the rubber wheel 10 to roll.
At present, a reinforced concrete wall horizontal loading test generally adopts the mode that a reinforced concrete beam is poured on the top of a wall to serve as a loading part, and a reinforced concrete ground beam is poured on the bottom of the wall to serve as a part for fixing the wall. In the invention, the reusable loading beam 2 and the reusable ground beam 3 are arranged to serve as a loading part and a fixing part, the constraint frame hinged by four points is a geometric variable system, although the load can not be borne, the constraint frame has a hoop constraint effect on the wall body, when a loading machine is used for horizontally loading the loading beam 2 in the constraint frame through the connecting plate 1, the horizontal load can be transmitted to the wall body through the hoop effect by the constraint frame, and meanwhile, the horizontal load borne by the constraint frame can be ensured to be ignored compared with the horizontal load borne by the wall body, so that the loading function of the loading beam 2 on the wall body and the fixing function of the ground beam 3 on the wall body are realized, the complex work of pouring the loading beam and the ground beam in the current horizontal loading test of the wall body is solved, the component manufacturing difficulty is simplified, and the component manufacturing cost and manufacturing time are saved; more importantly, the hoop restraining effect of the restraining frame can also simulate the restraining effect of beams and columns around the wall body on the wall body in actual engineering, so that the obtained test data more accords with the engineering reality, and the shear test research on the wall body, particularly the earthquake resistance test research under the action of repeated horizontal earthquakes, is more precise and accurate.
Preferably, the device can perform a static loading test of the steel plate shear wall and a static loading test of the single-layer frame after partial modification, when the device is used, only two edge columns 4 need to be removed, the static loading test of the steel plate shear wall is performed, when the device is used, only the upper part of the steel plate shear wall is connected with the loading beam 2 through bolts, the lower part of the steel plate shear wall is connected with the ground beam 3 through bolts, meanwhile, the edge columns 4 on the two sides are removed, and the loading beam 2 is clamped by the pulley blocks on the lateral supporting frame, so that the loading beam can be horizontally loaded and vertically loaded; the device can also perform static loading test on the single-layer frame, only the edge columns 4 on two sides need to be dismantled during use, steel cushion blocks are installed at positions, corresponding to the single-layer frame columns, of the bottom of the loading beam 2, the top of the beam and the top of the column of the single-layer frame are clamped by the pulley blocks 7 on the lateral supporting frame, and horizontal loading and vertical loading can be performed on the loading beam.
Claims (10)
1. A horizontal loading test device for a wall body is characterized by comprising a restraint frame and at least two lateral support frames, wherein the restraint frame penetrates through the middles of the lateral support frames, and the lateral support frames are arranged in parallel; the restraint frame includes load beam (2), grade beam (3) and two edge post (4), two edge post (4) set up respectively the edge about load beam (2), load beam (2) are connected with grade beam (3) through two edge post (4) and are obtained the rectangle restraint frame, the side direction support frame inboard is provided with a plurality of sliding clamping device, and sliding clamping device is used for controlling the direction of motion of restraint frame.
2. The horizontal loading test device for the wall body according to claim 1, wherein hinge plates (8) are connected to the lower end face of the loading beam (2), the upper end face of the ground beam (3) and the end faces of the two ends of the edge columns (4), the hinge plates (8) of the loading beam (2) are arranged corresponding to the hinge plates (8) on the ground beam (3), and pin bolts (9) are arranged among the hinge plates (8) and used for realizing the hinge joint of the loading beam (2), the ground beam (3) and the two edge columns (4).
3. The horizontal loading test device for the wall body is characterized in that the hinged plates (8) are fixed on the loading beam (2) and the ground beam (3) through bolts, the hinged plates (8) are welded on the end faces of the two ends of the edge column (4), and the positions of the hinged plates (8) fixed on the loading beam (2) and the ground beam (3) are adjustable.
4. The wall horizontal loading test device according to claim 1, wherein bolt holes are formed in the inner sides of the ground beam (3) and the edge column (4) and used for being in bolted connection with embedded bolt rods in the precast concrete cushion blocks.
5. The horizontal loading test device for the wall body according to claim 4, wherein a plurality of holes with thick wrists are formed in the side surfaces of the ground beam (3) and the edge column (4), and the holes are used for facilitating the insertion of a human hand for connecting and detaching the precast concrete cushion block with the ground beam (3) and the edge column (4) through bolts.
6. The horizontal wall loading test device according to claim 1, wherein the lateral support frame comprises two vertically arranged i-shaped steel columns (5) and a T-shaped short beam (6) connecting the two i-shaped steel columns (5), the T-shaped short beam (6) is fixedly connected to the tops of the i-shaped steel columns (5), the i-shaped steel columns (5) are provided with a plurality of groups of bolt holes in the height direction, and the sliding clamping device is in bolted connection with the i-shaped steel columns (5).
7. The horizontal loading test device for the wall body according to claim 1, wherein the sliding clamping device comprises two pulley blocks (7) oppositely arranged on the inner side of the lateral support frame, each pulley block (7) comprises a rubber wheel (10), a connecting rod (11), an axis rod (12) and a three-sided board (13), the rubber wheel (10) is sleeved on the axis rod (12), the rubber wheel (10) can rotate around the axis rod (12), the axis rod (12) is fixed on a rubber wheel base, the rubber wheel base is connected with the three-sided board (13) through the connecting rod (11), the three-sided board (13) is fixed on the lateral support frame, and the connecting rod (11) is in threaded connection with the rubber wheel base and the three-sided board (13).
8. The wall horizontal loading test device of claim 1, wherein the sliding clamping device is fixed on the lateral support frame through bolts.
9. A wall horizontal loading test device according to claim 1, characterized in that one end of the loading beam (2) is provided with a connecting plate (1).
10. The use method of the horizontal loading test device for the wall body is characterized in that when in use, the ground beam (3) is fixed on the ground, the loading beam (2), the ground beam (3) and the two edge columns (4) form a constraint frame, and the periphery of the wall body is clamped and constrained by the assembled constraint frame; the lateral support frame is assembled according to the size of the restraint frame, the restraint frame penetrates through the middle of the lateral support frame, the bottom of the lateral support frame is fixed on the ground, and meanwhile, the loading beam (2) is clamped by the sliding clamping device on the lateral support frame, so that the displacement of the wall body in the plane of the wall body is guaranteed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110384143.7A CN112985993A (en) | 2021-04-09 | 2021-04-09 | Wall horizontal loading test device and use method thereof |
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| CN202110384143.7A CN112985993A (en) | 2021-04-09 | 2021-04-09 | Wall horizontal loading test device and use method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279667A (en) * | 2022-03-07 | 2022-04-05 | 成都理工大学 | Pseudo-static anti-seismic test device and method for wallboard joint |
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2021
- 2021-04-09 CN CN202110384143.7A patent/CN112985993A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279667A (en) * | 2022-03-07 | 2022-04-05 | 成都理工大学 | Pseudo-static anti-seismic test device and method for wallboard joint |
| US11714025B1 (en) | 2022-03-07 | 2023-08-01 | Chengdu University Of Technology | Pseudo-static test device and method for seismic behavior of connection joints of wallboard |
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