CN206346199U - The guiding trestle of lattice column is laid in a kind of deep well - Google Patents

Abstract

The utility model discloses a guide support for placing a lattice column in a deep shaft, which comprises an underground support and an above-ground support connected to each other. The underground support includes two elevation adjustment mechanisms, and the two elevation adjustment mechanisms follow the structure of the lattice column The form is connected through bolts and nuts; the ground support includes two channel steels, and each channel steel is connected with each elevation adjustment mechanism. The utility model solves the problem that the lattice column in the prior art tends to be rotated and misplaced when it is placed, causing potential safety hazards, and when it is necessary to install a pile reinforcement cage at the bottom of the lattice column, the requirements for the crane arm are relatively high and the It is easy to put the positioning device on the lattice column at one time, which leads to the problem of low work efficiency.

Description

A guide bracket for placing lattice columns in deep shafts

technical field

The utility model relates to the technical field of construction of lattice columns in underground deep foundation pits, in particular to a guide bracket for placing lattice columns in deep shafts.

Background technique

In the construction of deep foundation pits for rail transit or housing construction, for the foundation pit support structure in the form of retaining piles + inner support, when the width of the foundation pit exceeds a certain limit, when erecting steel supports, it is necessary to set vertical supports in the middle of the steel supports. To prevent the foundation pit from being too long, the mid-span deflection is too large, and the steel support (or concrete support) is affected by the force, the vertical support is called "lattice column". The lattice column is generally welded into a rectangle by section steel, and is buried in the foundation pit to set the position by drilling holes on the ground in advance. Since the lattice column is a rectangular structure welded by section steel, with the layered and segmented excavation of the foundation pit during use, the lattice column and the horizontal steel support in the foundation pit, the longitudinal connecting beam (also a rectangular member welded by section steel) ) three frames together constitute the X, Y, Z three-dimensional space structure, if there is a rotation misalignment (deviation in the X, Y direction) when the lattice column is placed, then there will be gaps or angles when the longitudinal connecting beam is placed, and there will be no Closely pasted, resulting in potential safety hazards. Therefore, the positioning of the lattice columns in the X and Y axis directions is very critical when placing the lattice columns in the pit in the early stage.

In addition, there are some problems in the positioning device of the lattice column in the prior art: when the bottom of the lattice column is an uplift pile or a support pile structure, it is also necessary to install a pile reinforcement cage at the bottom of the lattice column, so that the pile reinforcement cage and the The lattice column is fixed together. When installing the lattice column in the prior art, the connected pile reinforcement cage and the lattice column are first placed inside, so that the lattice column remains on the upper part of the wellhead, and then the adjustment grid is adjusted by a crane. The positioning device for the direction of the lattice column is set on the lattice column, and then the positioning device is lowered slowly, and finally the X and Y axis directions of the lattice column are adjusted according to the positioning device. However, when installing the lattice column in this way, a crane arm is required The crane is long, and it is not easy to set the positioning device on the lattice column at one time, so the work efficiency is low.

Utility model content

The purpose of the utility model is to provide a guide bracket for placing a lattice column in a deep shaft, so as to solve the potential safety hazard caused by the rotation and dislocation of the lattice column in the prior art when it is placed, and when it is necessary to install a For a pile reinforcement cage, the requirements for the boom of the crane are high and it is not easy to put the positioning device on the lattice column at one time, which leads to the problem of low work efficiency.

The utility model is realized through the following technical solutions:

A guide support for placing a lattice column in a deep shaft, including an underground support and an above-ground support connected to each other, the underground support includes two elevation adjustment mechanisms, and the two elevation adjustment mechanisms pass through bolts and nuts according to the structure of the lattice column. Fitting connection; the ground support includes two channel steels, and each channel steel is connected with each elevation adjustment mechanism.

Further, the utility model sets the guide bracket for placing the lattice column into two parts, that is, two elevation adjustment mechanisms, and the two elevation adjustment mechanisms are movable, and can be matched by bolts and nuts according to the structural form of the lattice column. connect.

When only the lattice column is installed, measure and position the X and Y axis directions of the lattice column at the deep wellhead, and mark the line, so that the lattice column can be lowered along the positioned guide bracket, so that the lattice column The positioning of the X and Y axes is accurate, and in this way, the problem that the lattice column in the prior art is prone to rotation misalignment during placement and thus a potential safety hazard is solved.

When the bottom of the lattice column is an uplift pile or a supporting pile structure, the prior art is to fix the pile reinforcement cage and the lattice column together, and then put a positioning bracket on the lattice column left on the ground. The utility model changes the placement method. After the X and Y axis directions of the deep wellhead are accurately measured and positioned to determine the placement of the lattice columns, the two elevation adjustment mechanisms are wrapped around the lattice columns at the upper end of the deep wellhead. The form of the column is connected into a whole through bolts and nuts, and then the integrated guide bracket is put into the deep well along the positioned X and Y axis directions. Compared with the prior art, the utility model avoids the need for the length of the boom of the crane. In this way, the effect of one-time accurate positioning of the lattice column can be achieved, which is beneficial to save working time and labor, and improve work efficiency . Two channel steels are arranged on the support on the ground, and the channel steels are placed on the ground of the opening of the deep pit to hold the underground support.

Each elevation adjustment mechanism described above includes two angle steels and several reinforced positioning rods arranged between the two angle steels. Further, the angle steel used in the utility model is an isosceles right-angled triangle angle steel, the right-angled inner wall of the angle steel is adjacent to the lattice column, and the reinforcing positioning bar arranged between the two angle steels is connected to the outer wall of the angle steel by welding. The purpose of setting the reinforced positioning bar is to prevent the displacement or deformation of the four angle steels.

A guide bracket connecting plate is arranged on each angle steel, and a threaded hole is arranged on the guide bracket connecting plate. Further, the connecting plate of the guide bracket is welded on the right-angle outer wall of the angle steel. On the same angle steel, the welding point of the connecting plate of the guide bracket is not on the same side as the welding point of the reinforced positioning bar. The connecting plate of the guide bracket is composed of two steel plates connected together. The angle between them is 90°, and a threaded hole is provided on each guide bracket connecting plate, and the bolts are passed through the threaded holes on two adjacent guide bracket connecting plates, and then fixed with nuts, such The method connects two elevation adjustment mechanisms. In addition, multiple rubber sealing rings or iron rings can also be added between the connecting plates of the guide bracket, which can be used to accommodate lattice columns of different volumes.

The distance between the right angle inner wall of the angle steel and the outer wall of the lattice column is 0.5-1 cm. Further, the distance between the right-angled inner wall of the angle steel and the outer wall of the lattice column is 0.5-1 cm, which not only facilitates the smooth lowering of the lattice column, but also ensures the accuracy of the plane x and y directions of the lattice column to the greatest extent.

The above-ground support also includes an elevation control device, which is matched with the suspension rings arranged on the lattice columns. Further, the lifting ring set on the lattice column is made of a long screw rod, and one end of the long screw rod is set in a "U" shape, and the "U"-shaped end matches the elevation control device located in the ground support, and the other end is welded In the inner wall of the lattice column. Adjust the lattice column by adjusting the "U" shape of the lifting ring. Under the constraint of the guide bracket, slowly lower the lattice column to the design elevation position, and insert the shaped steel into the lifting ring to support the upper part of the guide bracket.

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

1. The utility model is a guide support for placing lattice columns in a deep shaft, including underground supports and above-ground supports connected to each other. The underground support includes two elevation adjustment mechanisms, and the two elevation adjustment mechanisms follow the structure of lattice columns. The form is connected by bolts and nuts. When only the lattice column is installed, the lattice column will be lowered along the positioned guide bracket, which solves the potential safety hazard caused by the rotation and misalignment of the lattice column in the prior art. Question: When the bottom of the lattice column is an uplift pile or a support pile structure, the two elevation adjustment mechanisms are wrapped around the lattice column at the upper end of the deep wellhead, and are connected by bolts and nuts in the form of the lattice column to form a Integral, and then put the integrated guide bracket into the deep well along the positioned X and Y axis directions. In this way, the effect of one-time accurate positioning of the lattice column can be achieved, which is conducive to saving working time and Artificial labor, improve work efficiency;

2. The utility model is a guide bracket for placing a lattice column in a deep shaft. The distance between the right-angled inner wall of the angle steel and the outer wall of the lattice column is 0.5-1 cm, which can facilitate the smooth lowering of the lattice column, and can also Maximize the accuracy of the x and y directions of the lattice column plane;

3. The utility model is a guide bracket for placing lattice columns in a deep shaft. A guide bracket connecting plate is provided on each angle steel. The guide bracket connecting plate is provided with threaded holes, and the bolts pass through two The threaded holes on the connecting plates of the adjacent guide brackets are then fixed with nuts. In this way, the two elevation adjustment mechanisms are connected. At the same time, multiple rubber sealing rings or iron rings can be added between the connecting plates of the guide brackets. This can be used to accommodate lattice columns of different volumes.

Description of drawings

The drawings described here are used to provide a further understanding of the embodiments of the utility model, constitute a part of the application, and do not constitute a limitation to the embodiments of the utility model. In the attached picture:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a top view of the elevation adjustment mechanism of the present invention.

Marks and corresponding part names in the drawings:

1-channel steel, 2-angle steel, 3-reinforced positioning rod, 4-connecting plate of guide bracket, 5-threaded hole, 6-lattice column, 7-elevation control device, 8-hanging ring.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the examples and accompanying drawings. The schematic implementation of the utility model and its description are only used to explain the utility model Novelty, not as a limitation to the utility model.

Example

As shown in Fig. 1 and Fig. 2, the utility model is a guide support for placing lattice columns in a deep wellbore, which includes an underground support and an above-ground support connected to each other. The underground support includes two elevation adjustment mechanisms, and two elevation adjustment mechanisms. The mechanism is connected through bolts and nuts according to the structural form of the lattice column 6; the ground support includes two channel steels 1, and each channel steel 1 is connected with each elevation adjustment mechanism. Each elevation adjustment mechanism described above includes two angle steels 2 and several reinforcing positioning rods 3 arranged between the two angle steels 2 . A guide bracket connecting plate 4 is arranged on each angle steel 2 , and a threaded hole 5 is arranged on the guide bracket connecting plate 4 . The distance between the right angle inner wall of the angle steel 2 and the outer wall of the lattice column 6 is 0.5-1 cm. The support on the ground also includes an elevation control device 7 , and the elevation control device 7 is matched with the suspension ring 8 arranged on the lattice column 6 .

The working process of the utility model: put the two elevation adjustment mechanisms on the ground of the orifice, and after measuring and positioning them accurately, the two elevation adjustment mechanisms are fixed into a whole through the joint connection of bolts and nuts, and then the guide bracket is placed Into the well-positioned pit, then the channel steel 1 positioned in the support on the ground is fixed on the ground. Start the crane to slowly lower the lattice column, manually place the lattice column in the middle of the guide bracket, and under the constraints of the guide bracket, until the lattice column 6 reaches the design elevation position, then insert the elevation rod into the suspension ring to control The device 7 supports the lattice column 6 .

Then pour the concrete of the pile in the pit, so that the pit of the lattice column 6 is filled with sand, so that when the foundation pit is excavated, it is easy to dig out the lattice column 6, and the excavated lattice column 6 is intact, and finally take out the guide bracket .

Example 2:

As shown in Figures 1 to 2, a guide bracket for placing lattice columns in a deep shaft, on the basis of Example 1, when the bottom of the structure column is an uplift pile or a support pile structure, the lattice column 6 It is necessary to fix the pile reinforcement cage and the bottom of the lattice column 6 together first, place the reinforcement cage and part of the lattice column 6 into the pit, leave a lattice column 6 with a length of about 3-5m on the ground, and then place the two elevation adjustment mechanisms On the ground of the orifice, and after the measurement and positioning are accurate, the two elevation adjustment mechanisms are clamped to the lattice column 6, and then the two elevation adjustment mechanisms are fixed into a whole through bolts and nuts, and then the crane and manual Cooperate with slowly adjusting the position of the guide bracket so that the guide bracket is consistent with the positioned X and Y axis directions, and then fix the channel steel 1 in the ground bracket on the ground. Under the constraints of the guide bracket, start the crane to slowly lower the lattice column until the lattice column 6 reaches the design elevation position, and then insert the elevation rod control device 7 into the lifting ring to support the lattice column 6.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present utility model in detail. Within the protection scope of the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (5)

1. a guide support for placing lattice columns in a deep shaft, comprising interconnected underground supports and above-ground supports, is characterized in that, said underground support comprises two elevation adjustment mechanisms, and two elevation adjustment mechanisms follow the lattice column ( 6) The structural form is connected through bolts and nuts; the ground support includes two channel steels (1), and each channel steel (1) is connected with each elevation adjustment mechanism. 2. A guide bracket for placing lattice columns in a deep shaft according to claim 1, characterized in that, each of the elevation adjustment mechanisms includes two angle steels (2) and is arranged on two angle steels (2) Several reinforcing positioning rods (3) between. 3. A guide bracket for laying lattice columns in a deep shaft according to claim 2, characterized in that, each angle steel (2) is provided with a guide bracket connecting plate (4), and the guide bracket Threaded holes (5) are arranged on the connecting plate (4). 4. A guide bracket for placing lattice columns in a deep shaft according to claim 2, characterized in that the distance between the right-angled inner wall of the angle steel (2) and the outer wall of the lattice column (6) is 0.5- 1cm. 5. A guide bracket for placing lattice columns in a deep wellbore according to claim 1, characterized in that, the ground bracket also includes an elevation control device (7), and the elevation control device (7) is connected to the lattice column. The suspension ring (8) on the construction column (6) matches.