Downward-inserting perpendicularity control device for H-shaped steel in equal-thickness cement-soil wall

Abstract

The utility model relates to a device for controlling the downward insertion perpendicularity of H-shaped steel in an equal-thickness cement soil wall, which comprises a fixed clamping seat, a level bubble arranged on the fixed clamping seat, a plurality of adjustable supporting legs arranged at the bottom of the fixed clamping seat, a positioning base arranged on the fixed clamping seat, the positioning base is provided with a plurality of clamping holes used for containing H-shaped steel fixing clamps and enabling the H-shaped steel fixing clamps to be in a vertical state, and the size of an inner cavity of each H-shaped steel fixing clamp is the same as the size of the section of H-shaped steel to be inserted into the equal-thickness cement-soil wall. The H-shaped steel positioning device has the beneficial effects that the H-shaped steel can be accurately positioned in the equal-thickness cement-soil wall, the inserting perpendicularity of the H-shaped steel in the equal-thickness cement-soil wall is effectively improved, the longitudinal and transverse deviation and the perpendicularity of the H-shaped steel are accurately controlled, and the perpendicularity of the inserted section steel meeting the requirements of specifications is not larger than 1 / 250.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support engineering, in particular to a verticality control device for inserting H-shaped steel in a cement soil wall of equal thickness. Background Art

[0002] With the development and utilization of urban underground space, super-large and super-deep foundation pits are appearing more and more in various construction projects. In terms of H-shaped steel cement soil wall deep foundation pit support technology, six process technologies have been widely used, including single-axis, multi-axis powder injection pile or slurry injection pile technology, high-pressure rotary jet pile technology, SMW method, equal-thickness cement soil wall TRD method and CSM double-wheel mixing. Compared with other foundation pit support technologies, equal-thickness cement soil wall TRD method is particularly suitable for super-large and super-deep foundation pit support projects. It is a complete set of equipment and construction method that can continuously form walls in various soil layers and gravel layers. It has the advantages of continuous wall formation, smooth surface, consistent thickness, good wall uniformity, strong stratum adaptability, low equipment height and high safety.

[0003] There are two main traditional methods for inserting H-shaped steel into cement-soil walls of equal thickness:

[0004] 1) The H-beam is lifted by a manipulator or excavator and manually fixed at a specific position by construction workers with the assistance of measuring instruments. This method is difficult to operate manually and can easily lead to deviation in the position of the H-beam, which is not conducive to the positioning of the H-beam. At the same time, the verticality of the H-beam insertion is difficult to ensure, which greatly affects the stability and strength of the pile body. Especially in dangerous and large projects such as deep foundation pits, the verticality requirements for the insertion of H-beam will be more stringent;

[0005] 2) On-site use of simple steel positioning cards made of sleepers or square steel pipes has low construction accuracy and is difficult to move and fix. After each pile is completed, the device needs to be dismantled and moved to the next pile position for repositioning. This operation is time-consuming and labor-intensive, greatly reducing construction efficiency. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a verticality control device for inserting H-shaped steel into cement soil wall of equal thickness, so as to overcome the deficiencies in the above-mentioned prior art.

[0007] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a device for controlling the verticality of H-shaped steel inserted into a cement soil wall of equal thickness, comprising: a fixed base, a level bubble provided on the fixed base, a plurality of adjustable legs provided at the bottom of the fixed base, a positioning base provided on the fixed base, a plurality of card holes on the positioning base for placing H-shaped steel fixing cards and making the H-shaped steel fixing cards in a vertical state, and the inner cavity size of the H-shaped steel fixing card is the same as the cross-sectional size of the H-shaped steel to be inserted into the cement soil wall of equal thickness.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, a movable roller is provided at the bottom end of the adjustable leg.

[0010] Furthermore, the movable roller adopts a roller with a self-locking function; or, further comprising: a stopper, which is arranged on the outside of the movable roller.

[0011] Furthermore, the positioning base is placed on the fixed base in an embedded manner.

[0012] Furthermore, the positioning base is a rectangular structure, the fixed base is a rectangular structure, an adjustable leg is provided at each corner of the positioning base, and a level bubble is provided at each end of the positioning base along the length direction.

[0013] Furthermore, the adjustable support leg includes: an upper support leg, the upper end of the upper support leg is fixed to the fixed base, the lower end of the upper support leg is fixed to the upper end of the lower support leg via a bolt, and at least one assembly hole adapted to the bolt is provided on the upper support leg along its length direction, and at least one assembly hole adapted to the bolt is provided on the lower support leg along its length direction.

[0014] The beneficial effects of the utility model are:

[0015] First, move the device to align with the center of the groove of the cement soil wall of equal thickness. Then, adjust the length of the adjustable legs and observe the level bubble on the fixed clamp to wait for the fixed clamp to be in a horizontal state. After the cement soil wall of equal thickness is poured, align the bottom center of the H-shaped steel with the center of the H-shaped steel fixing clamp and let it be inserted along the H-shaped steel fixing clamp to the designed specified depth under the weight of the H-shaped steel. After the concrete solidifies, the H-shaped steel is fixed in the cement soil wall of equal thickness. Move the device to the next location for continued use. Repeat the above operation until the construction is completed.

[0016] The device can achieve precise positioning of H-shaped steel in cement soil walls of equal thickness, effectively improve the verticality of H-shaped steel insertion in cement soil walls of equal thickness, accurately control the longitudinal and transverse deviations and verticality of the H-shaped steel, so that it meets the specification requirement of the verticality of the inserted steel not exceeding 1 / 250, and solve the problem that the H-shaped steel is slightly smaller in size than the thickness of the cement soil wall of equal thickness and is therefore very likely to penetrate obliquely in the vertical direction. The device effectively improves the construction efficiency of H-shaped steel in cement soil walls of equal thickness in a movable manner, and solves the problem in the existing technology that the medium-sized steel positioning card is difficult to move and fix, and the device needs to be dismantled and moved to the next pile position for repositioning after each construction is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the verticality control device for inserting H-shaped steel into a medium-thick cement-soil wall according to the utility model;

[0018] Figure 2 This is a partial structural diagram of the utility model's verticality control device for inserting H-shaped steel into a medium-thick cement-soil wall.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0020] 1. Fixed base, 2. Level, 3. Adjustable legs, 310, upper legs, 320, bolts, 330, lower legs, 4. Positioning base, 410, clamping hole, 5. H-shaped steel fixing clamp, 6. Moving roller, 7. Stopper. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] Example 1

[0023] like Figure 1 、 Figure 2 As shown, a device for controlling the verticality of H-shaped steel inserted into a cement soil wall of equal thickness is provided, comprising: a fixed base 1, a level bubble 2 is provided on the fixed base 1, a plurality of adjustable legs 3 are provided at the bottom of the fixed base 1, each adjustable leg 3 can be adjusted independently, and the length of the adjustable leg 3 is based on the requirements of the specific project site conditions. While ensuring its deployment, the height of the device is reduced as much as possible to improve the accuracy of H-shaped steel insertion, a positioning base 4 is provided on the fixed base 1, and the size parameters of the fixed base 1 are based on the size parameters of the positioning base 4; a plurality of clamping holes 410 are provided on the positioning base 4, an H-shaped steel fixing clamp 5 is placed in one of the clamping holes 410 on the positioning base 4, and is supported by the positioning base 4, so that the H-shaped steel fixing clamp 5 is in a vertical state; the spacing of the clamping holes 410 on the positioning base 4 is determined by the horizontal insertion interval of the H-shaped steel in the cement soil wall of equal thickness, and the inner cavity size parameters of the H-shaped steel fixing clamp 5 are the same as the cross-sectional size parameters of the H-shaped steel to be inserted into the cement soil wall of equal thickness;

[0024] First, move the device to align with the center of the groove of the cement soil wall of equal thickness, then adjust the length of the adjustable leg 3, and observe the level bubble 2 on the fixed base 1 to wait for the fixed base 1 to be in a horizontal state. After the cement soil wall of equal thickness is poured, align the bottom center of the H-steel with the center of the H-steel fixing card 5 and let it be inserted along the H-steel fixing card 5 to the designed specified depth by relying on its own weight. After the concrete solidifies, the H-steel is fixed in the cement soil wall of equal thickness, so that the H-steel is accurately positioned and lowered vertically. Move the device to the next place for continued use, repeat the above operations, and cycle until the construction is completed.

[0025] Example 2

[0026] like Figure 1 、 Figure 2As shown, this embodiment is a further improvement on the basis of embodiment 1, specifically as follows:

[0027] The bottom end of the adjustable leg 3 is provided with a movable roller 6 to facilitate the overall movement of the device.

[0028] Furthermore: the movable roller 6 adopts a roller with a self-locking function, which is an existing technology, so its structure will not be described in detail here. After the device is adjusted into place, the roller can be locked by the self-locking structure on the roller to prevent it from rolling, thereby ensuring that the H-shaped steel is accurately positioned and lowered vertically; of course, the movable roller 6 may also not adopt a roller with a self-locking function, but introduce a stopper 7, which is arranged on the outside of the movable roller 6, and the movable roller 6 can be prevented from moving by the stopper 7. The stopper 7 can be a block-shaped object with an arc-shaped concave surface on one side.

[0029] Example 3

[0030] like Figure 1 、 Figure 2 As shown, this embodiment is a further improvement on the basis of embodiment 1 or 2, specifically as follows:

[0031] The positioning base 4 is placed on the fixed card base 1 in an embedded manner, which makes it convenient to install the positioning base 4 on the fixed card base 1 and also convenient to remove the positioning base 4 from the fixed card base 1.

[0032] Example 4

[0033] like Figure 1 、 Figure 2 As shown, this embodiment is a further improvement on the basis of embodiment 1, 2 or 3, and the details are as follows:

[0034] The positioning base 4 is a rectangular structure, the fixed base 1 is a rectangular structure, an adjustable leg 3 is provided at each corner of the positioning base 4, and a level bubble 2 is provided at each end of the positioning base 4 along the length direction.

[0035] Example 5

[0036] like Figure 1 、 Figure 2 As shown, this embodiment is a further improvement on the basis of any one of the embodiments 1 to 4, specifically as follows:

[0037] The adjustable support leg 3 includes: an upper support leg 310, the upper end of the upper support leg 310 is fixed to the fixed base 1, and the lower end of the upper support leg 310 is fixed to the upper end of the lower support leg 330 via a bolt 320. The upper support leg 310 is provided with at least one assembly hole compatible with the bolt 320 along its length direction, and the lower support leg 330 is provided with at least one assembly hole compatible with the bolt 320 along its length direction. This structure facilitates adjustment of the length of the adjustable support leg 3.

[0038] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A device for controlling the verticality of H-shaped steel inserted into cement-soil walls of equal thickness, characterized in that: include: A fixed card seat (1) is provided with a level bubble (2) on the fixed card seat (1), a plurality of adjustable legs (3) are provided at the bottom of the fixed card seat (1), a positioning base (4) is provided on the fixed card seat (1), and the positioning base (4) has a plurality of card holes (410) for placing H-shaped steel fixing cards (5) and keeping the H-shaped steel fixing cards (5) in a vertical state, and the inner cavity size of the H-shaped steel fixing cards (5) is the same as the cross-sectional size of the H-shaped steel to be inserted into the cement soil wall of equal thickness.

2. The verticality control device for inserting H-shaped steel into cement-soil wall of equal thickness according to claim 1, characterized in that: The bottom end of the adjustable leg (3) is provided with a movable roller (6).

3. The verticality control device for inserting H-shaped steel into cement-soil wall of equal thickness according to claim 2, characterized in that: The movable roller (6) is a roller with a self-locking function; or further comprises: a stopper (7), wherein the stopper (7) is arranged outside the movable roller (6).

4. The verticality control device for inserting H-shaped steel into cement-soil wall of equal thickness according to claim 1, characterized in that: The positioning base (4) is placed on the fixed card seat (1) in an embedded manner.

5. The verticality control device for inserting H-shaped steel into cement-soil wall of equal thickness according to claim 1, characterized in that: The positioning base (4) is a rectangular structure, the fixed base (1) is a rectangular structure, an adjustable leg (3) is provided at each corner of the positioning base (4), and a level bubble (2) is provided at each end of the positioning base (4) along the length direction.

6. The verticality control device for inserting H-shaped steel into cement-soil wall of equal thickness according to claim 1, characterized in that: The adjustable support leg (3) comprises an upper support leg (310), the upper end of the upper support leg (310) being fixed to the fixed base (1), the lower end of the upper support leg (310) being fixed to the upper end of the lower support leg (330) via a bolt (320), the upper support leg (310) being provided with at least one assembly hole adapted to the bolt (320) along its length direction, and the lower support leg (330) being provided with at least one assembly hole adapted to the bolt (320) along its length direction.

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