CN205188982U - Removable system of strutting of rectangle work well - Google Patents

Abstract

The utility model discloses a support system for a working well, which belongs to the field of pipe jacking engineering, and in particular relates to a detachable support system for a rectangular working well, including a steel skeleton; The rectangular frame is connected by vertical steel. Each layer of rectangular frame is composed of four beams. The two ends of the beam are equipped with connecting angles. The upper and lower ends of the connecting angle are clamped by vertical steel. The utility model solves the problem of low space utilization rate of the existing support system, which is easy to bring inconvenience to the construction, and can realize the theoretical requirements of compressive resistance, shear resistance, and settlement, etc., has a high safety factor, and at the same time, the construction period is short and the investment is small. Recycling and reuse, high space utilization.

Description

A detachable support system for a rectangular working well

technical field

The utility model discloses a support system for a working well, which belongs to the field of pipe jacking engineering, and in particular relates to a detachable support system for a rectangular working well.

Background technique

A working well generally refers to a small foundation pit with an excavation depth of less than 5 meters or an underground structure below the third floor in a site with relatively simple geological and hydrological conditions, surrounding building environment, and underground pipelines. The working well is very important in the field of pipe jacking engineering, and the optimization of its support is worthy of discussion and research. At present, the working well can use underground diaphragm wall, steel sheet pile, bored pile, caisson, SMW construction method and reinforced concrete shotcrete anchor reverse method as the enclosure structure. However, these support forms have shortcomings such as long construction period, large investment, and non-recyclable resources, which increase the project cost and affect the construction progress.

The existing new support methods for working wells include small-diameter circular detachable foundation pit support systems. Although they can be recycled and reused, the data shows that rectangles are the most common shape in working wells, and the space utilization of circular support systems Low. Although some designed small foundation pit support systems are rectangular, they are internal support structures with low space utilization and may cause inconvenience to construction. Therefore, the existing new support methods of working wells still need to be optimized, and more suitable support schemes need to be designed.

Utility model content

In order to overcome the deficiencies of the existing new support methods for working wells, the utility model provides a detachable support system for rectangular working wells. At the same time, the construction period is short, the investment is small, it can be recycled and reused, and the space utilization rate is high.

The utility model adopts following technical scheme to realize:

A detachable support system for a rectangular working well, including a steel skeleton; the steel skeleton is a cuboid structure, and the cuboid structure is formed by connecting multiple layers of rectangular frames through vertical steel. Each layer of rectangular frames is composed of four beams, and the beams The end is equipped with a connection angle, and the upper and lower ends of the connection angle are clamped by vertical steel, and the vertical steel and vertical steel are socketed to form a column. Beams, connection angles, and vertical steel are interconnected to form a stable steel skeleton. The steel skeleton supports the pressure from the surrounding soil, improves the space utilization of the working well and ensures the safety of the construction process; the steel skeleton structure is simple, easy to assemble and disassemble, and the construction The cycle is short and the efficiency is high.

The main body of the crossbeam is I-beam, and the two ends of the I-beam are welded with connecting blocks consistent with the section of the I-beam. The connecting block is provided with fixing holes, and the two ends of the connecting angle are provided with protruding parts, and the protruding parts are provided with and Corresponding fixing holes of the connection block. The use of I-beams reduces the weight of the entire support system and reduces the labor force of workers. At the same time, the I-beams have a better bearing capacity and ensure the safety of the working well; bolts are used to connect the connection angle and the connection block tightly through the fixing holes to ensure The stability of the steel skeleton.

The vertical steel is divided into three parts, namely the upper steel pipe, the middle steel pipe and the lower steel pipe; the middle steel pipe is relatively thick, and the upper steel pipe is inserted into the lower steel pipe of the adjacent vertical steel; through holes. The lower steel pipe passes through the through hole of the connecting angle, is inserted into the upper steel pipe of the adjacent vertical steel, and is connected in sequence to form a column.

Earth-retaining planks are vertically installed on four sides of the support system, and the earth-retaining planks are in the shape of strips; supporting steel pipes are installed at multiple places at the bottom of the beam. The soil retaining board can prevent soil from entering the working well; the supporting steel pipe has high bending strength, and the steel skeleton is fixed on the working well wall for easy disassembly.

The utility model has the advantages of:

The system can meet the theoretical requirements of compressive shear resistance and settlement, and has a high safety factor. At the same time, the construction period is short, the investment is small, it can be recycled and reused, and the space utilization rate is high, which meets the development needs.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a sectional view of the utility model;

Fig. 2 is a top view of the utility model;

Fig. 3 is a structural schematic diagram of one end of the beam of the utility model;

Fig. 4 is a sectional view of the utility model I-beam;

Fig. 5 is a structural schematic diagram of the connection angle of the utility model;

Fig. 6 is a schematic diagram of the vertical steel structure of the utility model.

Explanation of symbols in the figure: 1, beam; 1.1, I-beam; 1.2, connection block; 2, connection angle; 2.1, protruding part; 2.2, through hole; 2.3, fixing hole; 3, column; 3.1, vertical steel; 3.1 .1. Upper steel pipe; 3.1.2. Middle steel pipe; 3.1.3. Lower steel pipe; 4. Soil retaining board; 5. Supporting steel pipe.

detailed description

A detachable support system for a rectangular working well, including a steel skeleton; the steel skeleton is a cuboid structure, and the cuboid structure is formed by connecting multiple layers of rectangular frames through vertical steel 3.1, and each layer of rectangular frames is composed of four beams 1, The two ends of the crossbeam 1 are equipped with connection angles 2, and the upper and lower ends of the connection angle 2 are clamped by vertical steel 3.1, and the vertical steel 3.1 and the vertical steel 3.1 are nested to form a column.

The main body of the beam 1 is an I-beam 1.1, and the two ends of the I-beam 1.1 are welded with a connecting block 1.2 consistent with the section of the I-beam 1.1, and a fixing hole 2.3 is arranged on the connecting block 1.2.

The vertical steel pipe 3.1 is divided into three parts, namely the upper steel pipe 3.1.1, the middle steel pipe 3.1.2, and the lower steel pipe 3.1.3; the middle steel pipe 3.1.2 is relatively thick, and the upper steel pipe 3.1.1 is inserted into the adjacent vertical steel pipe 3.1 The lower steel pipe is within 3.1.3.

The middle part of the connection angle 2 is provided with a through hole 2.2 corresponding to the lower steel pipe 3.1.3, the two ends of the connection angle 2 are provided with a protruding part 2.1, and the protruding part 2.1 is provided with a fixing hole 2.3 corresponding to the connection block 1.2.

The four sides of the support system are all vertically equipped with earth retaining planks 4, and the earth retaining planks 4 are in the shape of strips.

The bottom end of the beam 1 is provided with supporting steel pipes 5 at multiple places.

Mold assembly scheme:

(1) Lay out the line according to the drawing, select the four corners, and then excavate to 0.5m in the rectangular area formed by the four corners;

(2) Connect the connecting angle 2 to the vertical steel 3.1, and the vertical steel 3.1 and the vertical steel 3.1 are socketed to form a column 3; set the beam 1 on the connecting angle 2, and use bolts to fix it horizontally and vertically to form a multi-layer Rectangular frame, multi-layer rectangular frame and columns form a steel frame with a height of 0.5m, adjust the steel frame, and install the steel frame in the working well;

(3) Excavate 0.5m downwards to make the steel skeleton sink, repeat step (2), and increase the height of the steel skeleton from the upper end of the steel skeleton;

(4) Repeat steps (2) and (3) until the working well reaches 1.5m, install the retaining board 4 vertically outside the steel frame to retain the soil; until the required depth is reached, drive the support at the bottom of the beam 1 Steel pipe 5 gets final product.

Mold disassembly scheme:

(1) Starting from the bottom layer, remove and transport the bottom four beams 1, connection angle 2, and vertical steel 3.1 to the ground in sequence, and then remove and transport the second layer of beams 1, connection angle 2, and vertical steel 3.1 in sequence To the ground, pull out the supporting steel pipe 5 at the bottom of the dismantled beam 1;

(2) Backfill the working well to the height of a vertical steel 3.1, and pull out the retaining plank 4 from the outside of the working well to a height of vertical steel;

(3) Repeat steps (1) and (2) until the entire steel skeleton is removed, and the working well is filled and compacted.

Finally, it should be noted that obviously, the above-mentioned embodiments are only examples for clearly illustrating the utility model, rather than limiting the implementation manner. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.

Claims (6)

1. a removable support system for rectangle active well, comprises steel frame; It is characterized in that: steel frame is rectangular structure, rectangular structure is formed by connecting by vertical steel by multilayer rectangle frame, and every one deck rectangle frame is made up of four road crossbeams, and crossbeam two ends are provided with joint angle, the upper and lower two ends of joint angle are clamped by vertical steel, and vertical steel and vertical steel are socketed formation post mutually.

2. the removable support system of a kind of rectangle active well as claimed in claim 1, is characterized in that: described main body of cross-beam is i iron, and i iron two ends are welded with the contiguous block consistent with i iron section, and contiguous block is provided with fixing hole.

3. the removable support system of a kind of rectangle active well as claimed in claim 2, is characterized in that: described vertical steel is divided into three parts, is upper steel pipe, middle steel pipe, lower steel pipe respectively; Middle diameter of steel tube is larger than the diameter of upper steel pipe and lower steel pipe, and upper steel pipe is inserted in the lower steel pipe of neighboring vertical steel.

4. the removable support system of a kind of rectangle active well as claimed in claim 3, it is characterized in that: in the middle part of described joint angle, be provided with the through hole corresponding with lower steel pipe, joint angle two ends are provided with ledge, and ledge is provided with the fixing hole corresponding with contiguous block.

5. the removable support system of a kind of rectangle active well as claimed in claim 4, is characterized in that: described support system four sides are all vertically provided with gear building plate, and gear building plate is strip.

6. the removable support system of a kind of rectangle active well as claimed in claim 5, is characterized in that: many places, described crossbeam bottom are provided with supporting steel pipe.