CN210152295U - Can have enough to meet need reverse construction method steel-pipe column guiding device that hangs down of bolt formula - Google Patents

Abstract

The utility model provides a can have enough to meet need reverse construction method steel-pipe column of bolt formula guider that hangs down, including the steel-pipe column, the steel-pipe column includes inner prop and outer wall body, and the outer wall body divide into the triplex, including the steel-pipe column that hangs down of transferring, down the steel-pipe column that hangs down and fixed steel-pipe column, fixed steel-pipe column is installed inside nature ground, and the steel-pipe column outer wall middle part that hangs down welds a plurality of 20mm thick steel sheets, and the steel-pipe column left and right sides that hangs down is provided with a lower through-hole respectively, the utility model relates to a rationally, convenient to use adopts bolt formula instrument post, and the steel column wall is the uniform thickness, and the bolt space is 4mm, and bolt length is 400mm, and after the steel column extension, the instrument post is installed when the steel column is assembled, adopts the high. The sum of the verticality deviation of the theoretical tool column is less than or equal to 2mm, the flatness is increased by 0.5/1500 compared with the original steel column flatness L/1500, and the installation precision is high.

Description

A reversible pin-type reversal method for vertical adjustment guide device for steel pipe column

technical field

The utility model relates to the field of building construction, in particular to a vertical adjustment guide device of a reversible bolt-type reverse method steel pipe column.

Background technique

The reverse method is mostly used in the construction of multi-storey basements of high-rise buildings and other multi-storey underground structures, which solves the safety problem of foundation pit operations in dense urban high-rise areas, and has obvious economic effects in shortening the construction period and reducing the cost of temporary construction support. However, most of the reverse engineering methods have many restrictions on the engineering. For the above-ground superstructure, there are many load restrictions in the construction, especially the depth of the foundation pit should not be too deep, and the number of underground reverse engineering structures is mostly below 3 layers. The main reason is that the overall stability of the vertical support piles, the underground diaphragm wall and the horizontal structure stress system cannot meet the structural stability requirements. Specifically, the construction quality of the reverse method of the underground vertical structure is much lower than the level of the forward operation, especially the verticality control of the steel pipe column pile in the reverse operation area is the most important.

At present, because the foundation pit is constructed by the full inverse method, the depth of the foundation pit is 24.3m, and there are 146 steel pipe columns in one column and one pile project. /1000, the full length of the column should not be greater than 35mm, the verticality of the steel column design is very high, and the construction control is difficult as we all know. In order to meet the construction quality requirements, the vertical adjustment scheme of the steel pipe column 4m above the ground is adopted. In order to reduce the cost, the measures of using the solid steel column to be 2m+2m above the ground and turning the tool column can effectively save the cost, and at the same time optimize the connection node between the steel column and the tool column to ensure the quality of the steel column.

Utility model content

The purpose of this utility model is to solve the above-mentioned deficiencies, and to provide a reversible bolt-type vertical adjustment guide device for a steel pipe column.

The purpose of this utility model is to realize through the following technical solutions:

The utility model relates to a reversible bolt-type reverse-action steel pipe column vertical adjustment guide device, comprising a steel pipe column, the steel pipe column includes an inner column and an outer wall body, and the outer wall body is divided into three parts, including an upward vertical steel pipe column, a downward vertical steel pipe column and a fixed steel pipe column , the fixed steel pipe column is installed inside the natural ground, a plurality of 20mm thick steel plates are welded in the middle of the outer wall of the lower vertical steel pipe column, and a lower through hole is respectively set on the left and right sides of the lower vertical steel pipe column.

An upper through hole is respectively provided on the left and right sides of the upward-adjusting vertical steel pipe column.

Each lower through hole is provided with an M30 high-strength coarse-grained nut.

An overflow hole is arranged on the right side of the fixed steel pipe column.

The utility model has the following beneficial effects:

The utility model has reasonable design and convenient use. It adopts a bolt-type tool column, the steel column wall is of equal thickness, the bolt space is 4mm, and the bolt length is 400mm. After the steel column is connected, the tool column is installed when the steel column is assembled, and high-strength nuts are used Connected and fixed by steel plate welding, see the design drawings for details. The cumulative deviation of the verticality of the theoretical tool column is ≤2mm, which is 0.5/1500 higher than the flatness of the original steel column L/1500, and the installation accuracy is high.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, a reversible bolt-type reverse method steel pipe column vertical adjustment guide includes a steel pipe column. The steel pipe column includes an inner column and an outer wall body. Vertical steel pipe column 2 and fixed steel pipe column 3, the fixed steel pipe column 3 is installed inside the natural ground 7, a plurality of 20mm thick steel plates 8 are welded in the middle of the outer wall of the lower vertical steel pipe column 2, and a lower through hole is respectively provided on the left and right sides of the lower vertical steel pipe column 5.

An upper through hole 4 is respectively provided on the left and right sides of the upward-adjusting vertical steel pipe column.

Each lower through hole is provided with an M30 high-strength coarse-grained nut.

An overflow hole 6 is provided on the right side of the fixed steel pipe column.

The outer tube of the tool tube and the inner tube are welded and connected, which can be welded after the longitudinal opening of the overlapping part of the inner and outer tubes. The end face of the outer tube shall not be welded. The inner tube is symmetrically inlaid and welded with a number of 9.8-grade M30 high-strength coarse-grained nuts, and M30 long 70mm bolts , the number and position of the through holes at the top of the steel column are consistent with the welding nut of the inner sleeve of the corresponding tool tube; the inner tube can be made of Q235 steel plate, the outer wall is polished and round, and it can be smoothly inserted into the steel tube column.

During on-site construction, after the tool tube and the steel column are connected, longitudinal ribs are welded on the outside, the number of which is the same as that of the connecting bolts, and the size of each longitudinal rib is 300*100*25. The elevation of the column is: (1) There is no tool column for a steel column with only one specification. The elevation of the top of the column is 3.2m, and the elevation of the top of the other steel columns is 2m above the ground.

Regarding the overflow port: (1) Horizontal position: the circular column and the axis are arranged symmetrically at an angle of 45 degrees, and the rectangular column is symmetrically arranged diagonally; (2) Quantity: two holes per steel column.

The bolt type tool column is used, the steel column wall is of equal thickness, the bolt space is 4mm, and the bolt length is 400mm. After the steel column is lengthened, install the tool column when the steel column is assembled, connect it with high-strength nuts, and fix it with steel plate welding. Theoretical tool The cumulative deviation of the verticality of the column is ≤2mm, which is 0.5/1500 higher than the flatness L/1500 of the original steel column.

Claims (4)

1. a reverse-action method steel pipe column vertical guide device that can turn around the pin type, comprises a steel pipe column, it is characterized in that: the steel pipe column comprises an inner column and an outer wall body, and the outer wall body is divided into three parts, including the upward adjustment vertical steel pipe column, the lower sag Steel pipe column and fixed steel pipe column, the fixed steel pipe column is installed inside the natural ground, a plurality of 20mm thick steel plates are welded in the middle of the outer wall of the lower vertical steel pipe column, and a lower through hole is respectively set on the left and right sides of the lower vertical steel pipe column. 2 . The reversible pin-type vertical adjustment guide device for a steel pipe column according to claim 1 , wherein the left and right sides of the vertical adjustment steel pipe column are respectively provided with an upper through hole. 3 . 3 . The revolvable pin-type reversing method for vertical adjustment guide device for steel pipe column according to claim 1 , wherein each lower through hole is provided with an M30 high-strength coarse-grained nut. 4 . 4 . The reversible pin-type reversible vertical adjustment guide device for a steel pipe column according to claim 1 , wherein an overflow hole is provided on the right side of the fixed steel pipe column. 5 .

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