Anti-inclination strut for latticed column in reverse construction method

Abstract

The utility model discloses a reverse construction method latticed column anti-tilt strut, which comprises a latticed column and a pile hole located under the ground, the latticed column comprises four pieces of angle steel and a plurality of batten plates, the four pieces of angle steel form a square in a surrounding mode, and a plurality of groove positions are formed between every two pieces of angle steel at equal intervals in the length direction in an inward concave mode. And the plurality of batten plates are respectively and correspondingly welded and fixed in the slot positions between every two pieces of angle steel. The positioning column extending out of the ground is pre-buried in the pile hole, meanwhile, the vertical supporting column is installed in the center of the latticed column, during hoisting, the square hole of the supporting column is inserted along the positioning column, and due to the fact that the positioning column is vertical, the positioning column can assist in positioning the installation positions of the supporting column and the latticed column; in addition, the supporting columns and the positioning columns which are additionally arranged can also improve the follow-up overall combination strength, the overall structure is not prone to deformation and inclination, and therefore the safety of follow-up use is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of urban rail transit engineering, in particular to a reverse construction method lattice column anti-tilt support column. Background Art

[0002] With the leapfrog development of urban construction in China, deep foundation pit engineering problems are faced in the construction of urban rail transit such as underground parking lots, underground stations, and underground transportation hubs. Compared with traditional deep foundation pit construction methods, the reverse construction method has many advantages such as protecting the environment, saving social resources, and shortening the construction period. It overcomes many shortcomings of conventional temporary support and is an effective technical means for sustainable development of urban underground space development and building a conservation-oriented society. The reverse construction method is to first construct underground continuous walls or other supporting structures along the axis of the building's basement or around it, and at the same time cast or lay intermediate lattice columns at relevant locations inside the building, and use the lattice columns as supports for the deadweight of the upper structure and construction loads before the bottom slab is sealed during construction.

[0003] In the process of construction using the reverse method, it is often necessary to first pour concrete in the pre-excavated pile hole to form a pile column (foundation) at the bottom of the pile hole, and then use a lifting device to lower the lattice column into the pile hole. Due to the large depth of the pile hole and the relatively small diameter, it is often impossible to observe the inside of the pile hole from the ground, and it is impossible to directly grasp the descent of the lattice column. Therefore, it is inevitable that the landing position and verticality of the lattice column will deviate. Once a vertical support structure is formed, it will bring great safety hazards.

[0004] In view of this, a reverse-construction lattice column anti-tilt support is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a reverse construction method lattice column anti-tilt support in order to solve the above-mentioned problem.

[0006] The technical solution adopted by the utility model is as follows: a reverse construction method lattice column anti-tilt support, comprising a lattice column and a pile hole located below the ground, the lattice column comprising four angle steels and a plurality of gussets arranged to form a square, a plurality of grooves are formed by being equidistantly recessed inwardly along the length direction between two angle steels, a plurality of gussets are respectively welded and fixed in the grooves between two angle steels, and a hollow support column is vertically arranged along the center of the lattice column;

[0007] A positioning column vertically extending above the ground is pre-buried in the pile hole.

[0008] In a preferred embodiment, the support column has a hollow square hole, and the positioning column has the same size as the square hole.

[0009] In a preferred embodiment, steel bars are welded to the upper and lower four corners of the support column, and the other ends of the four steel bars are welded to the inner ends of the angle steels.

[0010] In a preferred embodiment, the positioning columns and the supporting columns are both made of steel, and the outer surfaces of the lattice columns and the positioning columns are coated with anti-rust paint.

[0011] In a preferred embodiment, the support column and the angle steel have the same length.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] 1. In the utility model, a positioning column extending above the ground is pre-buried in the pile hole, and a vertical support column is installed in the center of the lattice column. When hoisting, the square hole of the support column is inserted along the positioning column. Since the positioning column itself is vertical, the positioning column can assist in locating the installation position of the support column and the lattice column, so that the position after installation can be guaranteed to be vertical, thereby ensuring safety in subsequent use;

[0014] 2. In the present invention, the additional support columns and positioning columns will also improve the subsequent overall combined strength. At the same time, the angle steel of the lattice column reserves slots for installing the gusset plate, which can ensure the integrity of the lattice column after welding, thereby improving the strength of the lattice column itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the lattice column in the utility model;

[0016] Figure 2 It is a schematic diagram of the top plan structure of the lattice column in the utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the combination of lattice columns and pile holes in the utility model.

[0018] Markings in the figure: 1-lattice column, 11-angle steel, 12-attachment plate, 13-support column, 131-square hole, 14-slot, 15-rebar, 2-positioning column, 3-pile hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] Reference Figures 1-3A reverse construction lattice column anti-tilt support comprises a lattice column 1 and a pile hole 3 located below the ground. The lattice column 1 comprises four angle steels 11 and a plurality of gusset plates 12 which are arranged to form a square. A plurality of grooves 14 are formed by being equidistantly recessed inwardly along the length direction between two angle steels 11. The plurality of gusset plates 12 are respectively welded in the grooves 14 between two angle steels 11. The angle steel 11 of the lattice column 1 has reserved grooves 14 for installing the gusset plates 12. After welding, the integrity of the lattice column 1 can be ensured, thereby improving the strength of the lattice column 1 itself.

[0021] The reserved slots 14 can also ensure the accuracy of subsequent welding of the gusset plate 12 and ensure uniform force at each position.

[0022] Furthermore, a hollow support column 13 is vertically arranged at the center of the lattice column 1, and a positioning column 2 extending vertically above the ground is pre-buried in the pile hole 3. The support column 13 has a hollow square hole 131. The positioning column 2 is the same size as the square hole 131, and the support column 13 is the same length as the angle steel 11. The positioning column 2 extending above the ground is pre-buried in the pile hole 3 (fixed by poured concrete), and a vertical support column 13 is installed in the center of the lattice column 1. During hoisting, the square hole 131 of the support column 13 is inserted along the positioning column 2. Since the positioning column 2 itself is vertical, the positioning column 2 can assist in positioning the installation position of the support column 13 and the lattice column 1, so that the installed position can be guaranteed to be vertical, thereby ensuring safety in subsequent use.

[0023] At the same time, the additional support columns 13 and positioning columns 2 will also improve the subsequent overall assembly strength.

[0024] Furthermore, the upper and lower corners of the support column 13 are respectively welded with inherent steel bars 15, and the other ends of the four steel bars 15 are respectively welded to the inner ends of the angle steel 11. The support column 13 can be fixed to the inner end of the angle steel 11 through the four steel bars 15, and the steel bars 15 are arranged in at least two groups from top to bottom.

[0025] Furthermore, the positioning column 2 and the supporting column 13 are both made of steel, and the outer surfaces of the lattice column 1 and the positioning column 2 are coated with anti-rust paint, which can prevent the corrosion of temperature, humidity, atmosphere, seawater, etc. on the material, thereby extending the overall service life.

[0026] Among them, anti-rust paint is a commonly used material in the prior art, and the specific composition and structure are not described here.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reverse construction method lattice column anti-tilt support, comprising a lattice column and a pile hole located below the ground, characterized in that: The lattice column comprises four angle steels and a plurality of gussets arranged to form a square. A plurality of slots are formed by being equidistantly recessed inwards along the length direction between the angle steels. The plurality of gussets are respectively welded and fixed in the slots between the angle steels. A hollow support column is vertically arranged along the center of the lattice column. A positioning column vertically extending above the ground is pre-buried in the pile hole.

2. The reverse construction method lattice column anti-tilt support according to claim 1, characterized in that: The supporting column has a hollow square hole, and the positioning column has the same size as the square hole.

3. The reverse construction method lattice column anti-tilt support according to claim 1, characterized in that: The upper and lower four corners of the support column are respectively welded with steel bars, and the other ends of the four steel bars are respectively welded to the inner ends of the angle steels.

4. The reverse construction method lattice column anti-tilt support according to claim 1, characterized in that: The positioning columns and the supporting columns are both made of steel, and the outer surfaces of the lattice columns and the positioning columns are coated with anti-rust paint.

5. The reverse construction method lattice column anti-tilt support according to claim 1, characterized in that: The supporting column has the same length as the angle steel.

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