CN206942191U - A kind of temporary support of telescopic in height regulation reinforces combination steel construction - Google Patents

Abstract

The utility model relates to a temporary support and reinforcement composite steel structure whose height can be stretched and adjusted. In order to ensure the safety of the existing structures during the construction of underground interval tunnels, it is necessary to reinforce the existing buildings (structures) in advance. The utility model includes a bottom beam, a telescopic column, a jack and steel diagonal braces, and the telescopic column includes an inner hollow support column and an outer support sleeve column; the bottom end of the inner hollow support column is fixed on the bottom beam, and the outer support sleeve is covered from top to bottom Tube column; the top of the external support sleeve column is fixed with a bracket steel plate, steel diagonal braces are symmetrically arranged between the side wall and the bottom beam, and a jack is arranged between the bottom end and the bottom beam. The utility model solves the problem of rapid temporary reinforcement of the existing underground and above-ground structures under special working conditions, adopts the factory prefabricated on-site bolt connection assembly scheme, solves the problem that the on-site construction quality is difficult to control, and can realize rapid multiple disassembly and assembly of reinforcement materials , to achieve modular design and industrial production.

Description

A Temporary Support Reinforced Combined Steel Structure with Height Scalable Adjustment

technical field

The utility model belongs to the technical field of reinforcement and construction of existing underground engineering or ground low-rise structures, and in particular relates to a height-scalable and adjustable temporary support reinforcement combined steel structure.

Background technique

With the development of urban construction such as urban subways and traffic tunnels, more and more tunnels need to pass through underground and surface buildings (structures). At present, there are many old buildings or underground projects in cities, and the safety is difficult. Guarantee, the cost of large-scale demolition is high and difficult. Moreover, although some houses have been built for a long time, they are still safe if the uneven settlement is controlled within the allowable range during the tunnel construction, but it will be uneconomical if they are all demolished. In order to ensure the safety of the existing structures during the construction of the underground section tunnel, it is necessary to reinforce the existing buildings (structures) in advance, and strengthen the monitoring and measurement during the construction process to ensure the safety of the existing buildings (structures). After the construction is completed, take corresponding measures according to the results of monitoring and measurement to minimize demolition.

Since the steel structure adopts prefabricated assembly type, most of the components can be installed and adjusted on site, which reduces the difficulty of on-site construction, and the quality of on-site construction is easier to control. After the use is completed, it can be dismantled and reused to realize the secondary maximum utilization of materials.

Contents of the invention

The purpose of the utility model is to provide a height-scalable and adjustable temporary support and reinforcement combined steel structure. To solve the problem of rapid temporary reinforcement of the upper structure of the existing underground and above-ground structures under special working conditions, such as tunnel construction and other working conditions, the factory prefabricated on-site bolt connection assembly scheme is adopted to solve the problem of difficult control of on-site construction quality.

The technical scheme adopted in the utility model is:

A height-scalable and adjustable temporary support-reinforced combined steel structure is characterized in that:

Including bottom beam, telescopic column, jack and steel diagonal brace, telescopic column includes internal hollow support column and external support sleeve column;

The bottom of the inner hollow support column is fixed to the bottom beam, and the outer support sleeve column is covered from top to bottom;

The top end of the column of the external support sleeve is fixed with a steel plate on the top of the column, steel diagonal braces are symmetrically arranged between the side wall and the bottom beam, and a jack is arranged between the bottom end and the bottom beam.

The bottom end of the internal hollow support column is provided with a support connecting steel plate, and a bolt hole is provided on the support connecting steel plate;

The inner hollow support column is fixed to the bottom beam through the connecting bolts at the bolt holes on the steel plate connecting the support.

The bottom end of the column of the external support sleeve is provided with a steel plate connecting the bottom of the column of the external support sleeve, and a vertical trapezoidal stiffener is arranged between the steel plate at the bottom of the column of the external support sleeve and the side wall of the column of the external support sleeve;

A jack is installed on the support connecting steel plate, the jack is located at the bottom side of the inner hollow supporting column, and the connecting steel plate at the bottom of the outer supporting sleeve column is placed on the top of the jack.

A trapezoidal stiffener is arranged between the column top bracket steel plate on the top end surface of the column of the external support sleeve and the side wall of the column of the external support sleeve.

The top end surface of the steel brace is provided with a connecting steel plate, and the connecting steel plate is provided with adjustable bolt holes;

The top of the steel diagonal brace is fixed to the side wall of the column of the external support sleeve through the connecting bolt at the adjustable bolt hole on the connecting steel plate.

The bottom end of the steel brace is provided with a connecting steel plate, and the connecting steel plate is provided with adjustable bolt holes;

The bottom end of the steel brace is fixed to the bottom beam through the connecting bolt at the adjustable bolt hole on the connecting steel plate.

The cross section of the inner hollow support column and the outer support sleeve column of the telescopic column is circular or rectangular.

Steel diagonal braces are I-shaped steel diagonal braces;

The bottom beam is a box-shaped beam; or it is composed of two side-by-side I-beams, and connecting steel plates are arranged at intervals at the joints.

When the top of the telescopic column interferes with the existing pipeline, the top of the external support sleeve column is provided with a joist above the column, and short supports are provided on both sides of the existing pipeline on the top of the joist above the column.

The adjustable bolt holes are oblong holes.

The utility model has the following advantages:

1. The utility model can be applied to the temporary reinforcement of underground engineering structures or low-rise ground structures, which facilitates the on-site assembly of steel structures. The main components of steel structures are standardized and factory-like, and the difficulty of on-site construction is greatly reduced, especially when the site space is relatively narrow. When the time, the effect is better, in line with the requirements of energy conservation and sustainable development advocated by the state.

2. The utility model improves the prefabrication of building structural components, and the structural components can be processed in the factory. The site only needs to be hoisted, installed and fixed bolts, which reduces the on-site operation time of workers, reduces the labor intensity of workers, and greatly reduces the difficulty of on-site construction.

3. The utility model can be adjusted according to the height of the reinforced structure, which increases the adaptability, can be disassembled and reused many times, and the main structural components are not damaged, and the reusable rate of the structural components reaches more than 80%, which meets the requirements of the national Advocated green environmental protection requirements for building materials.

4. The utility model can be freely assembled according to the column span layout of the reinforced building (structure) by adjusting the size design and according to the size of the building area, so as to adapt to various structural forms and meet the needs of the diversity of spatial reinforcement structures. .

Description of drawings

Fig. 1 is a structural diagram of the utility model.

Figure 2 is a detailed view of the connection at the bottom of the column.

Fig. 3 is an I-I sectional view in Fig. 2 .

Figure 4 is a structural diagram of the stiffener.

Fig. 5 is a sectional view of the inner hollow support column.

Figure 6 is a sectional view of the bottom beam.

Figure 7 is a detailed diagram of the connection between the steel diagonal brace and the column of the external support sleeve.

FIG. 8 is a cross-sectional view of II-II in FIG. 7 .

Figure 9 is a detailed diagram of the connection between the bottom beam and the steel diagonal brace.

Fig. 10 is a III-III sectional view in Fig. 9 .

Figure 11 is a detailed view of the bracket steel plate at the top of the column.

Fig. 12 is a cross-sectional view of IV-IV in Fig. 11 .

Figure 13 is a detailed view of the bypass pipeline structure at the top of the column.

In the figure, 1-bottom beam, 2-support connecting steel plate, 3-inner hollow support column, 4-outer support sleeve column, 5-column top bracket steel plate, 6-steel diagonal brace, 7-trapezoidal stiffener, 8-Steel brace and external support sleeve column connection node, 9-Steel diagonal brace and bottom beam connection node, 10-Jack, 11-External support sleeve column bottom connecting steel plate, 12-Bolt hole, 13-Adjustable bolt Hole, 14-connecting steel plate, 15-connecting bolt, 16-pipeline schematic, 17-joist above column, 18-short support.

detailed description

The utility model is described in detail below in conjunction with specific embodiments.

It should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc. indicate positional relationships based on the mutual positional relationship shown in the drawings, and are only for convenience of description. Rather than indicating that the pointed position has a specific orientation or a specific operation, it should not be construed as a limitation of the present invention.

The terms "installation" and "connector" should be understood in a broad sense and are not limited to a certain fixed position, which can be at both ends of the component or in the middle of the component. For those skilled in the art, specific meanings of the above terms in the present invention can be understood through specific situations.

The utility model relates to a height-scalable and adjustable temporary support and reinforcement combined steel structure, which includes a bottom beam 1, a telescopic column, a jack 10 and a steel diagonal brace 6, and the telescopic column includes an inner hollow support column 3 and an outer support sleeve column 4 . The steel diagonal brace 6 is an I-shaped steel diagonal brace.

The bottom end of the inner hollow support column 3 is fixed to the bottom beam 1 through a connecting piece, and the outer support sleeve column 4 is covered from top to bottom. The inner diameter of the outer support sleeve column 4 should be slightly larger than the outer diameter of the inner hollow support column 3, allowing a certain error, so that the outer support sleeve column 4 is sleeved on the inner hollow support column 3. The top of the column 4 of the external support sleeve is fixed with a column top bracket steel plate 5, and a trapezoidal stiffener 7 is arranged between the column top bracket steel plate 5 and the side wall of the column 4 of the external support sleeve. The steel plate 5 has the functions of restricting deformation and increasing strength, and increasing the load bearing area. A steel diagonal brace 6 is symmetrically arranged between the side wall of the outer supporting sleeve column 4 and the bottom beam 1 through a connecting piece, and a jack 10 is arranged between the bottom end and the bottom beam 1 .

The bottom end of the internal hollow supporting column 3 is provided with a support connecting steel plate 2, and the supporting connecting steel plate 2 is provided with a bolt hole 12, and the internal hollow supporting column 3 is fixed on the connecting bolt 15 at the bolt hole 12 on the supporting connecting steel plate 2. Bottom beam 1.

The bottom end of the outer support sleeve column 4 is provided with a bottom connecting steel plate 11 of the outer support sleeve column, and a vertical trapezoidal stiffener 7 is arranged between the bottom connecting steel plate 11 of the outer support sleeve column and the side wall of the outer support sleeve column 4 . A jack 10 is installed on the support connecting steel plate 2, and the jack 10 is positioned at the bottom side of the inner hollow supporting column 3, and the connecting steel plate 11 at the bottom of the external supporting sleeve column is placed on the top of the jack 10.

The top end surface of the steel brace 6 is provided with a connecting steel plate 14, and the connecting steel plate 14 is provided with an adjustable bolt hole 13, and the top of the steel brace 6 is fixed to the external support through the connecting bolt 15 at the adjustable bolt hole 13 on the connecting steel plate 14. 4 side walls of the sleeve column. The bottom end of the steel brace 6 is provided with a connecting steel plate 14, the connecting steel plate 14 is provided with an adjustable bolt hole 13, and the bottom end of the steel diagonal brace 6 is fixed to the bottom by the connecting bolt 15 at the adjustable bolt hole 13 on the connecting steel plate 14. Beam 1. The adjustable bolt holes 13 are oblong holes.

The structure of the utility model can be adjusted as follows in actual working conditions:

1. When the top of the telescopic column interferes with the existing pipeline, the top of the column 4 of the external support sleeve can be provided with a joist 17 above the column, and short supports 18 can be provided on both sides of the existing pipeline on the top of the joist 17 above the column, which can effectively avoid Open existing pipelines. In the later stage, the height of the short support 18 can be appropriately adjusted according to the pipeline situation.

2. The bolt holes on all connecting plates can be set at two or four places according to actual needs, and all need to be set symmetrically.

3. The cross section of the inner hollow support column 3 and the outer support sleeve column 4 of the telescopic column can be circular or rectangular according to actual needs, and the rectangle is a positive direction or a rectangle.

4. The bottom beam 1 can be provided with a set of telescopic uprights on which a set of two symmetrical steel braces 6 are arranged on both sides of the telescopic uprights;

Bottom beam 1 also can be provided with two, and two bottom beams 1 are vertically intersected and arranged, and a set of telescopic column is arranged on it, and one group of two or two groups of four symmetrical steel diagonal braces 6 can be set on the side of telescopic column.

5. The jacks 10 at the bottom of the external support sleeve column 4 can be arranged symmetrically in one group of two, or in two groups of four symmetrically according to actual needs. The jack 10 can act on the outer supporting sleeve column 4 so as to adjust the height of the telescopic column. The symmetrical and uniform loading of the jack can prevent the telescopic column from bearing eccentric pressure, which is not conducive to the bearing capacity of the telescopic column.

6. The bottom beam 1 is a box-shaped beam; or it is composed of two side-by-side I-beams, and the middle part forms a rectangular cavity. The upper part of the bottom beam 1 is provided with connecting steel plates 2 at the joints at intervals to increase the overall quality of the bottom beam 1. stability.

All steel structure main bodies and connectors are made of steel. Compared with other reinforcement structures, the structure of the utility model can be processed into standard parts in the engineering workshop and assembled at the construction site, which shortens the construction time and labor intensity on site.

The content of the utility model is not limited to the examples listed, and any equivalent transformations taken by those skilled in the art to the technical solution of the utility model by reading the specification of the utility model are covered by the claims of the utility model.

Claims (10)

1. A temporary support and reinforcement composite steel structure with adjustable height, characterized in that: Including bottom beam (1), telescopic column, jack (10) and steel diagonal brace (6), telescopic column includes inner hollow support column (3) and outer support sleeve column (4); The bottom end of the inner hollow support column (3) is fixed to the bottom beam (1), and the outer support sleeve column (4) is covered from top to bottom; The top end of the external support sleeve column (4) is fixed with the column top bracket steel plate (5), and the steel diagonal brace (6) is symmetrically arranged between the side wall and the bottom beam (1), and the bottom end and the bottom beam (1) A jack (10) is arranged between them. 2. A height-scalable and adjustable temporary support and reinforcement combined steel structure according to claim 1, characterized in that: The bottom end of the internal hollow support column (3) is provided with a support connecting steel plate (2), and a bolt hole (12) is provided on the support connecting steel plate (2); The inner hollow support column (3) is fixed to the bottom beam (1) through the connecting bolts (15) at the bolt holes (12) on the support connecting steel plate (2). 3. A height-scalable and adjustable temporary support-reinforced combined steel structure according to claim 2, characterized in that: The bottom end of the external support sleeve column (4) is provided with a bottom connecting steel plate (11) of the external support sleeve column, and the bottom connecting steel plate (11) of the external support sleeve column and the side wall of the external support sleeve column (4) are arranged There are vertical trapezoidal stiffeners (7); A jack (10) is installed on the support connecting steel plate (2), the jack (10) is located at the bottom side of the inner hollow supporting column (3), and the connecting steel plate (11) at the bottom of the external supporting sleeve column is placed on the top of the jack (10) . 4. A height-scalable and adjustable temporary support-reinforced combined steel structure according to claim 3, characterized in that: A trapezoidal stiffener (7) is provided between the column top bracket steel plate (5) on the top end of the outer support sleeve column (4) and the side wall of the outer support sleeve column (4). 5. A height-scalable and adjustable temporary support-reinforced combined steel structure according to claim 4, characterized in that: A connecting steel plate (14) is arranged on the top end surface of the steel diagonal brace (6), and an adjustable bolt hole (13) is arranged on the connecting steel plate (14); The top of the steel diagonal brace (6) is fixed to the side wall of the outer support sleeve column (4) through the connecting bolt (15) at the adjustable bolt hole (13) on the connecting steel plate (14). 6. A height-scalable and adjustable temporary support-reinforced combined steel structure according to claim 5, characterized in that: The bottom end of the steel brace (6) is provided with a connecting steel plate (14), and the connecting steel plate (14) is provided with an adjustable bolt hole (13); The bottom end of the steel brace (6) is fixed to the bottom beam (1) through the connecting bolt (15) at the adjustable bolt hole (13) on the connecting steel plate (14). 7. A height-scalable and adjustable temporary support-reinforced combined steel structure according to claim 1, characterized in that: The cross-sections of the inner hollow support column (3) and the outer support sleeve column (4) of the telescopic column are circular or rectangular. 8. A height-scalable and adjustable temporary support-reinforced combined steel structure according to claim 1, characterized in that: The steel diagonal brace (6) is an I-shaped steel diagonal brace; The bottom beam (1) is a box beam; or it is composed of two side-by-side I-beams, and connecting steel plates (14) are arranged at intervals at the joints. 9. A height-scalable and adjustable temporary support-reinforced combined steel structure according to claim 1, characterized in that: When the top of the telescopic column interferes with the existing pipeline, set the joist (17) above the column on the top of the column (4) of the external support sleeve, and set short supports (18) on both sides of the existing pipeline on the top surface of the joist (17) above the column . 10. A height-scalable and adjustable temporary support-reinforced combined steel structure according to claim 5 or 6, characterized in that: Adjustable bolt holes (13) are oblong holes.