Integrated device suitable for fabricated foundation pit bottom ditch construction

Abstract

The utility model discloses an assembly type foundation pit bottom ditch construction integrated device, which belongs to the technical field of green and safe construction of foundation pits, and comprises a bracket, a cylindrical guide rod, a pull rod, a steel template and a screw rod, the bracket comprises cross rods and vertical rods, the plurality of vertical rods are arranged in parallel along the vertical direction, the plurality of cross rods are fixed between two adjacent vertical rods along the horizontal direction, and the screw rod is fixed between the two adjacent vertical rods. Cylindrical guide rods are installed on the upper portion and the lower portion of the vertical rod, the pull rod is welded to the vertical rod and used for controlling the steel formwork to move along a straight line, and one end of the lead screw is connected with the other end of the steel formwork and the cylindrical guide rods, can stretch out and draw back and is used for fixing the steel formwork and adjusting the width of a ditch. And meanwhile, repeated utilization can be achieved, and loss during material turnover is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of green and safe construction of foundation pits, and particularly relates to an integrated device suitable for the construction of a ditch at the bottom of an assembled foundation pit. Background Art

[0002] With the construction of deep foundation pits in my country and the deepening of the concept of low-carbon green construction, prefabrication has gradually become a hot spot in foundation pit construction technology. At present, the rapid and efficient drainage at the bottom of the foundation pit will directly affect the construction safety of the prefabricated foundation pit, and will seriously lead to the risk of foundation pit collapse. The existing patent (publication number: CN214169120U) discloses a reusable prefabricated foundation pit drainage device, which includes a plurality of U-shaped drainage boards, two adjacent drainage boards are fixed by a connecting plate, and a sealing adhesive is arranged between the two adjacent drainage boards. The drainage board includes a bottom plate, a first side plate and a second side plate, and a transverse support rod is arranged between the first side plate and the second side plate. The transverse support plate, the first side plate and the second side plate are fixed integrated structures, and multiple drainage boards can be assembled on site through the connecting plate. It is suitable for drainage at the bottom and top of the foundation pit, and can be taken out and reused after use. However, there is a problem that the drainage device has no fixing device during drainage and poor stability.

[0003] Therefore, how to provide an integrated device with strong welding and strong stability suitable for the construction of a water ditch at the bottom of an assembled foundation pit is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an integrated device and a construction method suitable for the construction of a ditch at the bottom of an assembled foundation pit, so as to solve the deficiencies in the prior art.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An integrated device suitable for the construction of a ditch at the bottom of an assembled foundation pit comprises a bracket, a cylindrical guide rod, a pull rod, a steel template and a screw rod. The bracket comprises a horizontal rod and a vertical rod. A plurality of vertical rods are arranged in parallel in the vertical direction. A plurality of horizontal rods are fixed between two adjacent vertical rods in the horizontal direction. Cylindrical guide rods are installed on the upper and lower parts of the vertical rods. The pull rod is welded to the vertical rod and is used to control the movement of the steel template along a straight line. One end of the screw rod is connected to the steel template and the other end is connected to the cylindrical guide rod and can be retracted and is used to fix the steel template and adjust the width of the ditch.

[0007] Furthermore, the horizontal rod and the vertical rod are both L40 angle steels, and the cylindrical guide rod is a φ42 steel pipe.

[0008] Furthermore, the cylindrical guide rods are respectively arranged 20 cm upward from the bottom and downward from the top of the vertical rod.

[0009] The beneficial effects of the utility model are:

[0010] The utility model is suitable for an integrated device for constructing a water ditch at the bottom of an assembled foundation pit. It is easy to install, not easily deformed, and has easier control of linear dimensions. It can also be reused, thus avoiding loss during material turnover. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0012] Figure 1 It is the front view of the utility model.

[0013] Figure 2 It is a side view of the utility model.

[0014] Figure 3 It is a structural schematic diagram of the utility model.

[0015] Among them, in the figure:

[0016] 1-Pull rod, 2-Vertical rod, 3-Steel formwork, 4-Screw rod, 5-Cylindrical guide rod, 6-Horizontal rod. DETAILED DESCRIPTION

[0017] In order to achieve the above-mentioned purpose and effect, the technical means and structure adopted by the utility model are described in detail with reference to the accompanying drawings for the preferred embodiments of the utility model and their features and functions.

[0018] See also Figures 1 to 3 The integrated device shown is suitable for the construction of a prefabricated foundation pit bottom ditch, including a bracket, a cylindrical guide rod 5, a pull rod 1, a steel template 3 and a screw rod 4. The bracket includes a cross bar 6 and a vertical rod 2. A plurality of vertical rods 2 are arranged in parallel in the vertical direction. A plurality of cross bars 6 are fixed between two adjacent vertical rods 2 in the horizontal direction. The upper and lower parts of the vertical rods 2 are both installed with cylindrical guide rods 5. The pull rod 1 is welded to the vertical rod 2 and is used to control the movement of the steel template 3 along a straight line. One end of the screw rod 4 is connected to the steel template 3 and the other end is connected to the cylindrical guide rod 5 for fixing the steel template 3 and adjusting the width of the ditch.

[0019] Furthermore, the horizontal rod 6 and the vertical rod 2 are both L40 angle steels, and the cylindrical guide rod 5 is a φ42 steel pipe.

[0020] Furthermore, the cylindrical guide rods 5 are respectively arranged 20 cm upward from the bottom and downward from the top of the vertical rod 2 .

[0021] A construction method applicable to an integrated device for constructing a ditch at the bottom of an assembled foundation pit, comprising the following steps:

[0022] S1: Based on the design data of the ditch at the bottom of the foundation pit, the ditch wall is measured and laid out for construction. At the edge positions on both sides of the ditch, according to the size of the designed template, holes are drilled with an electric drill, and template positioning steel bars with a diameter of 12mm are driven into the holes to ensure that the above-mentioned integrated device for the construction of the assembled ditch at the bottom of the foundation pit can be placed at a suitable position in the ditch;

[0023] S2: Locate the position of the steel bars along the template, install the integrated device, and place the above-mentioned integrated device for the construction of the ditch at the bottom of the prefabricated foundation pit at a spacing of 1.5m along the ditch to ensure the linear extension of the design plane of the ditch;

[0024] S3: insert the pull rod 1 into the reserved hole of the steel formwork 3, install the above-mentioned integrated device for the construction of the ditch at the bottom of the assembled foundation pit to the position determined by the positioning steel bar, and the outer screw rod 4 is close to the filling surface of the invert arch. The width of each section of the ditch is maintained at a net width of 40 cm by continuously adjusting the length of the screw rod 4. The casting size of each section is checked by measuring and checking the stability. The above-mentioned integrated device for the construction of the ditch at the bottom of the assembled foundation pit is adjusted by a level or a level to ensure that the vertical rod 2 and the horizontal rod 6 are level and plumb. The stability of the connection support points of each component is checked to ensure that the support points are stable and the connection is tight without gaps;

[0025] S4: After the concrete arrives at the site, the slump, workability, air content and other performance indicators must be tested first. The collapse should be controlled within the range of 14 to 16 cm. Concrete pouring can only be started after all indicators are normal. The concrete is poured evenly in layers and completed in one go. During pouring, due to the small cross-section of the ditch, it cannot be directly poured into the mold by a tank truck. It is necessary to use iron sheets to make a flat "["-shaped chute to facilitate the guidance of concrete into the mold. During the pouring process, the concrete vibration is strengthened to achieve "fast insertion and slow withdrawal". After pouring to the designed top surface, the first finishing is carried out in time, and the second finishing is carried out when the concrete is initially set. The surface is flat, free of bubbles, and sharp edges and corners. After the concrete is poured, the residual concrete on the tie rod 1 and the screw rod 4 is cleaned in time to ensure the service life and fixing effect;

[0026] S5: First loosen the pull rod 1, then use a small hammer to knock and vibrate the template to separate the template from the concrete, then slowly adjust the screw rod 4 to retract and lift the steel template 3 in the ditch in the groove to complete the demoulding operation. After demoulding, water and maintain in time to ensure that the ditch concrete reaches the designed strength.

[0027] Furthermore, during processing in the processing plant, it is necessary to control the welding position of the connecting angle steel and the steel pipe, ensure the welding quality, and ensure the strength and rigidity of the integrated formwork.

[0028] Furthermore, after the integrated formwork is installed, a spirit level or level gauge is used to adjust each position of the formwork to ensure that each bracket and beam is level and plumb, and the connection support points of each component of the formwork are checked for stability, so that the support points are stable, the connections are tight without gaps, and the supports and formwork are closely attached.

[0029] Furthermore, after the concrete is poured, the residual concrete on the tie rods and the screw rods is cleaned in time to ensure the service life and fixing effect of the integrated formwork.

[0030] The above description of the disclosed specific embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these specific embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the specific embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. Applicable to the integrated device for the construction of ditch at the bottom of the assembled foundation pit, characterized in that: The invention comprises a bracket, a cylindrical guide rod (5), a pull rod (1), a steel template (3) and a screw rod (4), wherein the bracket comprises a cross rod (6) and a vertical rod (2), wherein a plurality of vertical rods (2) are arranged in parallel in the vertical direction, and a plurality of cross rods (6) are fixed between two adjacent vertical rods (2) in the horizontal direction, and a cylindrical guide rod (5) is installed on the upper and lower parts of the vertical rods (2). The pull rod (1) is welded to the vertical rod (2) and is used to control the movement of the steel template (3) along a straight line. One end of the screw rod (4) is connected to the steel template (3) and the other end is connected to the cylindrical guide rod (5) and can be extended and retracted, and is used to fix the steel template (3) and adjust the width of the ditch.

2. The integrated device for constructing a ditch at the bottom of a prefabricated foundation pit according to claim 1 is characterized in that: The horizontal rod (6) and the vertical rod (2) are both L40 angle steels, and the cylindrical guide rod (5) is a φ42 steel pipe.

3. The integrated device for constructing a ditch at the bottom of a prefabricated foundation pit according to claim 1 is characterized in that: The cylindrical guide rods (5) are respectively arranged 20 cm upward from the bottom and downward from the top of the vertical rod (2).

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