CN210953302U - A multifunctional test stand suitable for shaking table - Google Patents

Abstract

The utility model relates to a multifunctional test stand suitable for a vibrating table, which is used for testing a vibrating table (5). 3) and 4 retaining beams (7), the 4 columns (1) are placed vertically and symmetrically on the ground on both sides of the channel, and four aisle beams (3) are arranged at different heights, each The aisle beams (3) are respectively connected to the two uprights (1) along the groove or across the groove, wherein the four aisle beams (3) on the top layer of the support are connected with the four enclosure beams (7), of which two enclosure beams (7) ) are arranged along the groove, and the other two enclosure beams (7) are arranged across the groove, and the four enclosure beams (7) constitute a rectangular enclosure area for enclosing the specimen on the vibrating table (5). Compared with the prior art, the utility model has the advantages of high safety and strong flexibility.

Description

A multifunctional test stand suitable for shaking table

technical field

The utility model relates to the field of civil engineering, in particular to a multifunctional test bracket suitable for a vibration table.

Background technique

The shaking table test can obtain the dynamic response of the component under the action of the earthquake by inputting the ground motion to the test component through the shaking table table, which is an effective method to obtain the dynamic response of the structure under the action of the earthquake. The multi-point shaking table seismic simulation system is composed of a channel and multiple shaking tables in the channel. When multiple shaking tables are located in a channel, multiple shaking tables form a large linear shaking table group, and multiple shaking tables can also be used. Distributed in two channels that are not on the same straight line, the shaking tables in the two channels together form a polygonal shaking table group, which is used as a large shaking table. The multi-point shaking table earthquake simulation system can be applied to bridge engineering, building and space structure, underground engineering, lifeline engineering, disaster prevention and mitigation engineering and other fields, providing a vibration and earthquake simulation experiment platform for a wide range of civil engineering disciplines.

However, there are three main problems when using the multi-functional shaking table for vibration test:

First, because the vibration displacement of the vibration table design is large and the actuator is directly supported on the side wall of the channel, the vibration table is far from the edge of the channel, which is not conducive to erecting a simple supporting scaffold structure for sensor installation. If the sensor bracket is installed On the table, due to the vibration of the bottom, the top of the bracket is prone to large natural vibration, which affects the measurement results;

Second, for the specimen with large vertical size, it is necessary to observe the vibration of the specimen at different heights, and the test condition cannot be clearly observed from the detection device installed on the ground;

The third is that the vertical dimension of the test piece placed on the vibrating table is very large, and the shaking amplitude of the test piece is very large during the vibration process, which easily causes the test piece to tilt or even fall down.

Utility model content

The purpose of the present utility model is to provide a multifunctional test stand suitable for a shaking table in order to overcome the above-mentioned defects of the prior art, which is used for the protection of the shaking table test and the installation of the testing equipment, and has the advantages of flexibility, safety and stability. .

The purpose of the present utility model can be achieved through the following technical solutions:

A multifunctional test stand suitable for a shaking table, used for shaking table testing, the shaking table is located in a channel, and includes 4 uprights, several aisle beams and 4 enclosure beams, and the 4 uprights are vertical and Symmetrically placed on the ground on both sides of the channel, four aisle beams are set at different heights and levels, and each aisle beam is connected to two columns along the channel or across the channel respectively. The beams are connected, two of which are arranged along the groove, and the other two are arranged across the groove, and the four surround beams constitute a rectangular enclosure area for the specimen on the vibrating table.

Further, the upright column comprises a bottom column, a middle column and a top column connected in sequence, wherein the number of the middle column is one or more.

Further, both ends of the two enclosure beams arranged along the channel are connected to the walkway beams, and both ends of the two enclosure beams arranged across the channel are connected to the two enclosure beams arranged along the channel.

Further, a first connection block is installed on the lower side of the connection between the walkway beam and the column.

Further, a second connection block is installed at the corner where the upright column is connected with the two walkway beams.

Further, a climbing ladder is provided inside the column.

Further, the bottom end of the column and the connection with the walkway beam are provided with through holes for personnel to enter and exit.

Further, handrails are provided on both narrow sides of the walkway beam.

Further, the columns, the walkway beams and the enclosure beams are all steel trusses.

Further, the two ends of the walkway beam and the bottom end of the handrail are provided with pin holes.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The utility model adopts 4 vertical columns, several walkway beams and 4 surrounding beams to be assembled into a multifunctional test device, and the walkway beams are arranged at different heights, and the monitoring equipment of the test can be installed on each walkway beam, and the all-round , Record the vibration test data of the specimen during the test more accurately and stably. At the same time, the multifunctional test device is a self-balancing structure. The column is connected with the ground without bolts and no additional weight is required. Walking on the device and erecting monitoring equipment are not easy. It will produce obvious shaking, and the stability is good. At the same time, the rectangular maintenance area enclosed by the four retaining beams on the top layer of the bracket can prevent or slow down the roll of the specimen on the shaking table, and improve the safety and accuracy of the test;

(2) The utility model adopts the bottom column, the middle column and the top column to form the vertical column, wherein the number of the middle column can be flexibly selected according to the height of the test piece on the vibration table, and then the height of the entire support can be flexibly adjusted, which is beneficial to the protection of the surrounding beams. The enclosure at the top of the specimen and the erection of monitoring equipment in all directions and at various heights;

(3) The utility model connects the two ends of the enclosing beam across the groove with the side of the walkway beam respectively, and the two ends of the enclosing beam along the groove are respectively connected with the sides of the two enclosing beams spanning the groove, according to the top of the test piece The size of the vibration table and the vibration amplitude of the vibrating table can be adjusted flexibly by adjusting the length and position of the enclosure beams across the groove and along the groove to adjust the size of the rectangular enclosure area.

Description of drawings

Fig. 1 is the structural front view of the utility model;

Fig. 2 is the left side view of the structure of the utility model;

Fig. 3 is A-A sectional schematic diagram in Fig. 1;

FIG. 4 is a schematic cross-sectional view of B-B in FIG. 1 .

Description of the labels in the figure:

1. Upright column, 2. First contact block, 3. Walkway beam, 4. Handrail, 5. Shaking table, 6. Climbing ladder, 7. Enclosure beam, 8. Second contact block.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

A multifunctional test stand suitable for shaking table, as shown in Figure 1 and Figure 2, used for shaking table test, including 4 columns 1, several walkway beams 3 and 4 enclosure beams 7, as shown in Figure 4, 4 The column 1 is placed vertically and symmetrically on the ground on both sides of the channel where the vibrating table 5 is located, and four aisle beams 3 are arranged at different heights and levels, and each aisle beam 3 is connected to the two columns 1 along the groove or across the groove, respectively. The four aisle beams 3 on the top layer of the support are connected with four enclosure beams 7, and the four enclosure beams 7 are respectively arranged along the grooves and across the grooves and form a rectangular enclosure area for enclosing the specimen on the vibrating table 5, The two ends of the enclosing beam 7 along the groove are respectively connected with the sides of the two enclosing beams 7 spanning the groove. Install the pull-wire displacement gauge and camera mount at each height of the test stand.

As shown in Figure 3, in the 4 enclosure beams 7, the two ends of the 2 enclosure beams 7 arranged along the groove are connected with the side surface of the walkway beam 3, and the two ends of the 2 enclosure beams 7 arranged across the groove are connected with the 2 sides arranged along the groove. The side of the root containment beam 7 is connected.

The column 1 includes a bottom column, a middle column and a top column. The cross-sectional area of the column 1 is all 0.9m×0.9m, of which the number of middle columns is one or more, the bottom column is 4.5m high, the middle column is 4m high, and the top The column height is 3m. According to the height of the specimen on the shaking table 5, the overall height of the multifunctional test bracket can be adjusted by adjusting the number of central columns. The number of central columns can be set to 0, 1, 2 or 3 layers. 7.5m, 11.5m, 15.5m and 19.5m.

The walkway beam 3 has two lengths of 6m and 12m. The multi-functional test stand can use the walkway beam 3 of different lengths to realize the single shaking table 5 test and the double shaking table 5 test. The 6m-long walkway beam 3 is used in the direction, and the 12m-long walkway beam 3 is used along the groove direction during the double-stage vibration table 5 test.

The enclosure beam 7 has two lengths of 6m and 12m in the trough direction, which are suitable for the single shaking table 5 test and the double shaking table 5 test respectively. The enclosure beam 7 has two lengths in the cross groove direction of 5m and 8m. , which can be selected according to the size and placement area of the specimen;

The rectangular enclosure area can be adjusted by changing the dimensions of the enclosure beam 7 in the two directions of the cross-slot and the along-slot, wherein the modulus of the change of the cross-slot is 1m, and the modulus of the change of the along-slot is 0.5m. According to different test requirements, the minimum enclosure range that can be achieved during the single shaking table 5 test is 1m×0.5m, and the maximum enclosure scope is 3m×9m; the minimum enclosure scope that can be achieved during the double shaking table 5 test is 4m×0.5m, and the maximum enclosure range is 6m×9m.

The column 1, the aisle beam 3 and the enclosure beam 7 are all trusses. The column 1 and the aisle beam 3 are all connected by bolts. The connection between the aisle beam 3 and the enclosure beam 7 is connected by pre-reserving holes and using M18 bolts.

A first connection block 2 is installed on the lower side of the connection between the walkway beam 3 and the column 1, and a second connection block 8 is installed at the corner where the column 1 is connected with the two walkway beams 3. The first connection block 2 and the second connection block 8 It is used to fix the walkway beam 3 and the column 1 to ensure the stability of the entire multifunctional test stand.

There is a climbing ladder 6 inside the column 1, and the bottom end of the column 1 and the connection with the aisle beam 3 are provided with through holes for personnel to enter and exit. At the same time, handrails 4 for safety protection are provided on both narrow sides of the walkway beam 3, and the handrails are fixed by 10 cm high reserved sleeves inserted into the walkway beam.

The sleeves at both ends of the walkway beam 3 and the bottom end of the handrail 4 are provided with pin holes, which can be used to add fixing parts to fix the pull-wire displacement meter and the camera frame, and the fixing parts include bolts or steel wires.

Considering that the walkway beam 3 has construction personnel, small equipment and stacking tools, the calculation is based on the three-story walkway beam 3 and the load is covered with the walkway beam, and the design live load of the walkway beam 3 can withstand a uniform load of 2kN/m2 except for its own weight.

According to the width of the channel, assemble the bottom column and the channel beam 3 in the direction of the channel, and then install the channel beam 3 in the direction of the channel according to the number of vibration tables 5 used in the test to form a bottom bracket and hoist the bottom bracket to the channel symmetrically;

Assemble the middle column and the aisle beam 3 into a middle support, repeat step S2 according to the height of the test piece on the middle column vibration table 5 and stack the assembled middle support on the bottom support;

Assemble the top column and the walkway beam 3 to form the top support, and install the enclosure beams 7 along the groove and across the groove symmetrically on the walkway beam 3 of the top support to form a rectangular enclosure area for maintaining the specimen on the shaking table 5, Hang the top-level support on the middle-level support, and install the pull-wire displacement meter and camera frame for monitoring and testing on the walkway beams 3 of each floor;

Among them, the size of the rectangular enclosure area is adjusted by adjusting the installation position and length of the enclosure beams 7 along the groove and across the groove, and the number of vibrating tables is one or more.

This embodiment proposes a multi-functional test stand suitable for a vibrating table. When the vibrating table 5 is tested, the stand is arranged around the vibrating table 5, and test instruments and video recording equipment are installed at different heights. The beam 7 constitutes a rectangular enclosure area, which can prevent or slow down the roll when the specimen rolls unexpectedly. The enclosure beam can adjust the rectangular enclosure according to the size of the specimen and the vibration amplitude of the shaking table 5. size of the area.

The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims. .

Claims (10)

1. a multifunctional test stand that is applicable to shaking table, is used for shaking table (5) test, and this shaking table (5) is located in the channel, it is characterized in that, comprises 4 uprights (1), several walkway beams ( 3) and 4 retaining beams (7), the 4 columns (1) are placed vertically and symmetrically on the ground on both sides of the channel, and four aisle beams (3) are set at different height levels, each The walkway beams (3) are respectively connected to the two uprights (1) along the grooves or across the grooves, wherein the four walkway beams (3) on the top layer of the support are connected with the four enclosure beams (7), of which two enclosure beams (7) ) is arranged along the groove, and the other two enclosure beams (7) are arranged across the groove, and the four enclosure beams (7) constitute a rectangular enclosure area for enclosing the specimen on the vibrating table (5). 2. a kind of multifunctional test stand suitable for vibration table according to claim 1, is characterized in that, described upright column (1) comprises bottom column, middle column and top column connected in sequence, wherein the number of middle column 1 or more. 3. A kind of multifunctional test stand suitable for vibrating table according to claim 1, is characterized in that, the two ends of 2 enclosure beams (7) arranged along the groove are connected with the walkway beam (3), and the two ends of the 2 guard beams (7) arranged along the groove are connected with the walkway beam (3), Both ends of the provided two enclosure beams (7) are connected to the two enclosure beams (7) arranged along the groove. 4. a kind of multifunctional test stand suitable for vibrating table according to claim 1, is characterized in that, the lower side of the junction of described walkway beam (3) and upright column (1) is installed with the first contact block ( 2). 5. A kind of multifunctional test stand suitable for vibration table according to claim 1, is characterized in that, the corner where described column (1) is connected with two walkway beams (3) is installed with the second contact block (8). 6. A multifunctional test stand suitable for a vibrating table according to claim 1, characterized in that a ladder (6) is provided inside the upright column (1). 7. A kind of multifunctional test support suitable for vibration table according to claim 1, is characterized in that, the bottom end of described column (1) and the junction with the walkway beam (3) are provided with a through hole. 8 . The multifunctional test stand suitable for a vibrating table according to claim 1 , wherein handrails ( 4 ) are provided on both narrow sides of the walkway beam ( 3 ). 9 . 9. A kind of multifunctional test stand suitable for vibration table according to claim 1, is characterized in that, described column (1), walkway beam (3) and enclosure beam (7) are all made of steel truss. 10 . The multifunctional test stand suitable for a vibrating table according to claim 1 , wherein the two ends of the walkway beam ( 3 ) and the bottom end of the handrail ( 4 ) are provided with pin holes. 11 .

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