CN105466709A - Assembling type post removing device for progressive collapsing of frame structure - Google Patents

Abstract

The invention provides a frame structure continuous collapse assembled column removal device. The purpose of the present invention is to solve the problem that the separation time of the traditional column removal device and the structure is too long to effectively reflect the dynamic effect of the structure when the continuous collapse test of the building structure is carried out. The assembled column removal device of the present invention includes a mechanism column device and a pendulum device. The mechanism column device includes a support, an upper rod, a lower rod, a pin shaft and a plexiglass rod; the upper rod and the lower rod are connected through a pin shaft and a plexiglass rod; the upper rod and the support are connected through a pin shaft connection; the lower rod and the bearing are connected through a pin shaft. The pendulum clock device includes a pendulum clock and a beam with a connecting plate. The pendulum clock and the crossbeam with connecting plate are connected by pin shafts. The bearing capacity of the assembly type column removal device of the present invention is unlimited and can be used repeatedly. The invention can be used to simulate the instantaneous failure of the column when the building structure collapses continuously, so as to truly reflect the dynamic effect of the building structure during the continuous collapse process.

Description

Assembled column removal device for continuous collapse of frame structures

technical field

The invention relates to the continuous collapse of structures caused by instantaneous column removal, in particular to the experimental research on the collapse of planar structures caused by instantaneous column removal.

Background technique

Under the action of accidental loads (such as strong earthquakes, impacts, explosions, fires, etc.), building structures are very likely to cause instantaneous failure of vertical support members (columns). When the component fails and withdraws from work, the damaged area forms an unbalanced load. If the damaged structure cannot redistribute and rebalance the unbalanced load, the progressive collapse of the structure will occur. In the continuous collapse caused by the instantaneous failure of vertical support members, the dynamic effect of the structure is particularly obvious. How to make the members instantaneously fail in the collapse test of the structure, so as to study the dynamic effect of the structure is one of the keys to the study of the collapse of the structure.

The use of failure devices to simulate the instantaneous failure of structural support members is an important approach for collapse analysis. The failure devices currently used include impact blocks and piston rods with fast retraction cylinders to simulate instantaneous failure of structural members. For the impact block method, due to the large friction between the blocks, the separation time between the block and the structure is too long, and the dynamic effect of the structure is difficult to reflect; for the cylinder method, on the one hand, due to the limited load that the cylinder can bear, making The size of the structure should not be too large. On the other hand, the retraction speed of the piston rod is too slow so that the dynamic effect of the structure is difficult to reflect.

Contents of the invention

In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a column removal device with unlimited bearing capacity, reusable and fast component failure time.

In order to achieve the above object, the present invention provides a frame structure continuous collapse assembled column removing device, which includes a frame structure and a bracket, and is characterized in that it also includes a mechanism column device and a pendulum device, wherein,

The mechanism column assembly is assembled on the frame structure and bears the vertical load before collapse;

The pendulum device is installed on the bracket through its fixed end, and its moving end hits the mechanism column to cause the instantaneous failure of the mechanism column device, so that the frame structure collapses continuously, as shown in Figure 8.

The mechanism column device is composed of a support 1 , a lower rod 2 , a pin shaft 3 , a fragile plexiglass rod 4 and an upper rod 5 .

The lower rod 2 and the support 1 are connected by a pin shaft 3, and are located at the lower part of the mechanism column device, as shown in Figure 1;

The upper rod 5 and the lower rod 2 are connected by a pin shaft 3 and a plexiglass rod 4, and are located in the middle of the mechanism column device,

see picture 1;

The upper rod 5 and the support 1 are connected by a pin shaft 3 and are located at the upper part of the mechanism column device, as shown in FIG. 1 .

The support 1 includes an end plate 11 and a splint 12;

The lower rod 2 includes a connecting plate 21, an end plate 22, a steel cylinder 23 and a splint 24;

The upper rod 5 includes a lower connecting plate 51, an end plate 52, a steel cylinder 53 and an upper connecting plate 54;

Described pendulum clock device is made up of pendulum clock 6, band connecting plate beam 7 and bearing pin 3.

The pendulum 6 and the crossbeam 7 with connecting plate are connected by the pin shaft 3, and the pendulum device is suspended in a suitable position, so that the lower end of the pendulum 6 is aligned with the middle part of the mechanism column device, as shown in FIG. 8 .

The pendulum clock 6 includes an H-shaped short beam 61 , a connecting rod 62 , an end plate 63 and a splint 64 ;

Further, the support is connected to the lower rod through the pin shaft. In order to ensure that the mechanism column device is in a vertical state, the gap between the connecting plate and the splint is about 2mm; the lower rod and the upper rod are connected through the pin shaft and the plexiglass rod. In order to ensure that the mechanism column device is in a vertical state, the gap between the connecting plate and the splint is about 2mm; the support and the upper rod are connected through a pin shaft. In order to ensure that the mechanism column device is in a vertical state, the gap between the connecting plate and the splint is about 2mm.

Further, the pendulum clock is connected to the beam with the connecting plate through a pin shaft. In order to prevent the pendulum from shaking, the gap between the connecting plate and the splint is about 2mm.

Furthermore, after the mechanism column device was installed before the test, the pendulum device was used to hit the middle part of the mechanism column device to cut the plexiglass rod, so that the mechanism column device rotated rapidly and fell down, thereby causing structural collapse.

As mentioned above, the continuous collapse assembled column removal device of the present invention can effectively and truly reflect the dynamic effect of the structure without being limited by the bearing capacity. In addition, the invention is reusable, saves materials, and is economically feasible. The components of the mechanism column device and the pendulum device can be manually disassembled to facilitate the maintenance and repair of the assembled decolumn device.

Description of drawings

FIG. 1 is a schematic perspective view of the mechanism column device of the present invention.

FIG. 2 is a schematic perspective view of the pendulum device of the present invention.

Fig. 3 is a schematic perspective view of the support in the mechanism column device of the present invention.

Fig. 4 is a schematic perspective view of the lower rod in the mechanism column device of the present invention.

Fig. 5 is a schematic perspective view of the upper rod in the mechanism column device of the present invention.

FIG. 6 is a schematic perspective view of the pendulum clock in the pendulum clock device of the present invention.

Fig. 7 is a perspective schematic diagram of a beam with a connecting plate in the pendulum clock device of the present invention.

Figure 8 shows a schematic diagram of the overall installation of the present invention.

Component designation description

1 support

11 end plate

12 splints

2 downswing

21 connecting plate

22 end plate

23 steel cylinder

24 splints

3 pins

4 plexiglass rods

5 backswing

51 lower connecting plate

52 end plate

53 steel cylinder

54 upper connecting plate

6 pendulums

61H shape short beam

62 connecting rod

63 end plate

64 plywood

7 Beams with connecting plates

71 connecting plate

72 short beam

73 connecting plate

detailed description

The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

See Figures 1 through 7. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. within the scope covered by the disclosed technical content. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present invention without any substantial change in the technical content.

As shown in Figure 1, the present invention provides a mechanism column device, which includes two supports 1, a lower rod 2, an upper rod 5, three pin shafts 3, and a plexiglass rod 4;

As shown in Figure 3, the support 1 is welded by an end plate 11 and two splints 12;

As shown in Figure 4, the lower rod 2 is welded by a connecting plate 21, two end plates 22, a steel cylinder 23 and two splints 24;

As shown in FIG. 5 , the upper rod 5 is welded by a connecting plate 51 , two end plates 52 , a steel cylinder 53 and two clamping plates 54 .

Referring to Fig. 1, the mechanism column device is assembled by two supports 1, a lower rod 2, and an upper rod 5 through three pin shafts 3 and a plexiglass rod 4, and the described support 1 is made of a steel plate Made by welding, the lower rod 2 and the upper rod 5 are made by welding steel plates and steel cylinders, and the pin shaft 3 is made of steel rods, so that the column removal device can bear a relatively large load. The support 1 is connected with the lower rod 2 through a pin shaft 3 . In order to ensure that the mechanism column device is in a vertical state, the gap between the connecting plate 21 and the clamping plate 12 is about 2 mm; the lower rod 2 and the upper rod 5 pass through the pin shaft 3 and the plexiglass rod 4 connections. In order to ensure that the mechanism column device is in a vertical state, the gap between the connecting plate 51 and the clamping plate 24 is about 2 mm; the support 1 and the upper rod 5 are connected through a pin 3 . In order to ensure that the mechanism column device is in a vertical state, the gap between the connecting plate 54 and the clamping plate 12 is about 2mm. Each component is easy to disassemble and reusable, as shown in Figure 1.

The present invention also provides a pendulum clock device, as shown in Figure 2, comprising a pendulum clock 6, a pin shaft 3, and a beam 7 with a connecting plate;

As shown in Figure 6, the pendulum clock 6 is welded by an H-shaped short beam 61, a connecting rod 62, an end plate 63 and two splints 64;

As shown in FIG. 7 , the cross beam 7 with connecting plates is welded by two connecting plates 71 , a short beam 72 and a connecting plate 73 . The pendulum clock 6 is connected to the crossbeam 7 with a connecting plate through a pin shaft 3 . In order to prevent the pendulum from shaking, the gap between the connecting plate 64 and the clamping plate 73 is about 2 mm. Each component is easy to disassemble and reusable, as shown in Figure 2.

In order to cooperate with the continuous collapse test, the present invention also improves the use method of the mechanism column device, including the following steps:

The base 1, the lower rod 2, the upper rod 5, the pin shaft 3, the pendulum 6 and the crossbeam 7 with the connecting plate are welded in the processing plant to form the basic elements of the mechanism column device, see Fig. 3 to Fig. 7 .

Referring to FIG. 1 , two supports 1 , a lower rod 2 , and an upper rod 5 are assembled into the mechanism column device through three pin shafts 3 and a plexiglass rod 4 . Referring to Fig. 2, a pendulum clock 6 and a beam 7 with a connecting plate are assembled into the pendulum clock device through a pin shaft 3.

Before the test, assemble the mechanism column device and install it to the part of the structure where the column is to be removed, see Figure 8. Install the pendulum device to the position corresponding to the mechanism column device, see Figure 8.

During the test, pull the pendulum to the corresponding position and impact the plexiglass rod of the mechanism column device shown in Figure 1 to cut the plexiglass rod, prompting the instantaneous failure of the mechanism column device to cause continuous collapse.

To sum up, the assembled column removal device of the present invention has better instantaneous failure performance and can effectively reflect the dynamic effect of the structure; the assembled column removal device of the present invention can be reused without being limited by the structural bearing capacity. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high test value.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims (3)

1. framed structure Progressive Collapse assembled removes a column device, comprises framed structure, support, it is characterized in that, also comprises mechanism's column device and pendulum bell device, wherein,

Described mechanism column device is assemblied in framed structure, and bears vertical load before collapsing;

Described pendulum bell device is installed on support by its stiff end, impels mechanism's column device transient failure by its tache motorice knocking gear post, framed structure thus occur Progressive Collapse;

Described mechanism column device is made up of bearing (1), lower beam (2), bearing pin (3), frangible perspex bar (4) and upper boom (5);

Described lower beam (2) is connected by bearing pin (3) with bearing (1), is positioned at mechanism's column device bottom;

Described upper boom (5) is connected with perspex bar (4) by bearing pin (3) with lower beam (2), is positioned in the middle part of mechanism's column device;

Described upper boom (5) is connected by bearing pin (3) with bearing (1), is positioned at mechanism's column device top;

Described bearing (1) comprises end plate (11) and clamping plate (12);

Described lower beam (2) comprises web joint (21), end plate (22), steel cylinder (23) and clamping plate (24);

Described upper boom (5) comprises lower connecting plate (51), end plate (52), steel cylinder (53) and upper junction plate (54);

Described pendulum bell device forms by putting bell (6), band web joint crossbeam (7) and bearing pin (3);

Described pendulum bell (6) is connected by bearing pin (3) with band web joint crossbeam (7), and pendulum bell device is suspended to correct position, is alignd with the middle part of mechanism column device in pendulum bell (6) lower end;

Described pendulum bell (6) comprises H-shaped short beam (61), connecting rod (62), end plate (63) and clamping plate (64);

Described band web joint crossbeam (7) comprises web joint (71), short beam (72), web joint (73).

2. bearing (1) is connected by bearing pin (3) with described lower beam (2) according to claim 1;

In order to ensure that mechanism's column device is plumbness, the gap between described web joint (21) and described clamping plate (12) is about 2mm;

Described lower beam (2) is connected by described bearing pin (3) and described perspex bar (4) with described upper boom (5);

In order to ensure that mechanism's column device is plumbness, the gap between described web joint (51) and described clamping plate (24) is about 2mm; Described bearing (1) is connected by bearing pin (3) with described upper boom (5);

In order to ensure that mechanism's column device is plumbness, the gap between described web joint (54) and described clamping plate (12) is about 2mm.

3. put bell (6) according to claim 1 with described band web joint crossbeam (7) by (3) pinned connection;

In order to avoid pendulum bell rocks, the gap between described web joint (64) and described clamping plate (73) is about 2mm.