Rigid framework of underground diaphragm wall

Abstract

The utility model relates to a rigid framework of an underground diaphragm wall, which comprises a first-stage groove section rigid framework and a second-stage groove section rigid framework which are alternately arranged, the first-stage groove section rigid framework comprises N pieces of first H-shaped steel which are parallel to each other and are arranged on the same plane, and a plurality of pieces of first lap joint steel plates which are parallel to each other, a plurality of first lap joint steel plates are welded to the two sides of the N pieces of first H-shaped steel correspondingly, and the long axes of the first lap joint steel plates are perpendicular to the long axes of the first H-shaped steel. The second-stage groove section rigid framework comprises N-1 pieces of second H-shaped steel which are parallel to one another and arranged on the same plane and a plurality of second lap joint steel plates which are parallel to one another, the second lap joint steel plates are welded to the two sides of the N-1 pieces of second H-shaped steel respectively, and the long axes of the second lap joint steel plates are perpendicular to the long axes of the second H-shaped steel. The rigid framework has the advantages that the H-shaped steel and the steel plates are welded to form the rigid framework, the longitudinal rigidity of the rigid framework is good, and the groove wall of the underground diaphragm wall can be prevented from collapsing.

Description

Technical Field

[0001] The utility model relates to the technical field of underground continuous wall construction, in particular to a rigid frame of an underground continuous wall. Background Art

[0002] The underground continuous wall is constructed by using professional trenching equipment to excavate and lower the steel cage, and then pour concrete to form a reinforced concrete unit trench section. This is done section by section to build a continuous reinforced concrete wall underground as a water interception, anti-seepage, and load-bearing structure. The underground continuous wall is suitable for the foundation or foundation pit retaining structure of large buildings and structures, including bridges, large urban complex structures, etc. It is also used in pump stations, pools, underground oil depots and warehouses, municipal pipe trenches and culverts, shield tunneling and other engineering shafts and other structures.

[0003] The depth of underground continuous wall ranges from more than ten meters to more than 100 meters. The deeper the underground continuous wall, the worse the longitudinal rigidity of the steel cage, and the steel cage cannot effectively prevent the trench wall from collapsing before pouring. Utility Model Content

[0004] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a rigid framework of an underground continuous wall.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] A rigid skeleton of an underground continuous wall comprises a first-phase trench section rigid skeleton and a second-phase trench section rigid skeleton arranged alternately, wherein the first-phase trench section rigid skeleton comprises N mutually parallel first H-shaped steels arranged in the same plane, and a plurality of mutually parallel first overlapping steel plates, a plurality of first overlapping steel plates are welded on both sides of the N first H-shaped steels, and the long axes of the first overlapping steel plates are perpendicular to the long axes of the first H-shaped steels; the second-phase trench section rigid skeleton comprises N-1 mutually parallel second H-shaped steels arranged in the same plane, and a plurality of mutually parallel second overlapping steel plates, a plurality of second overlapping steel plates are welded on both sides of the N-1 second H-shaped steels, and the long axes of the second overlapping steel plates are perpendicular to the long axes of the second H-shaped steels.

[0007] The horizontal spacing between any two adjacent first H-shaped steels is 1 meter, and the horizontal spacing between any two adjacent second H-shaped steels is 1 meter.

[0008] Among them, the longitudinal spacing between two adjacent first overlapping steel plates on the same vertical plane is 1 meter, and the longitudinal spacing between two adjacent second overlapping steel plates on the same vertical plane is 1 meter.

[0009] Wherein, the length of the second overlapping steel plate is 1 meter shorter than that of the first overlapping steel plate.

[0010] Among them, the height of the first H-shaped steel is 180 mm less than the thickness of the underground continuous wall, and the thickness of the first overlapping steel plate is 20 mm; the specifications of the second H-shaped steel are the same as those of the first H-shaped steel, and the thickness of the second overlapping steel plate is the same as that of the first overlapping steel plate.

[0011] The top end of the first H-shaped steel is flush with the top end of the first overlapping steel plate at the top, and the top end of the second H-shaped steel is flush with the top end of the second overlapping steel plate at the top.

[0012] The beneficial effects of the utility model are as follows: a rigid frame is formed by welding H-shaped steel and steel plates, the rigid frame has good longitudinal rigidity and can prevent the groove wall of the underground continuous wall from collapsing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 It is a partial structural schematic diagram of the underground continuous wall in the utility model;

[0015] Figure 2 It is a front view structural diagram of the rigid skeleton of the first stage of the trough section in the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the rigid skeleton of the first phase of the trough section in the utility model from a top view;

[0017] Figure 4 It is a schematic diagram of the front view of the rigid skeleton of the second phase trough section in the utility model;

[0018] Figure 5 It is a schematic diagram of the structure of the rigid skeleton of the second phase trough section in the utility model from a top view;

[0019] Explanation of numbers in the figure: rigid frame 1 of first-phase trough section, rigid frame 2 of second-phase trough section, first H-shaped steel 11, first lap steel plate 12, second H-shaped steel 21, second lap steel plate 22, underground 100, underground concrete wall 200 of first-phase trough section, underground concrete wall 300 of second-phase trough section. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0021] like Figures 1 to 5 As shown, a rigid frame of an underground continuous wall includes a first-phase trench section rigid frame 1 and a second-phase trench section rigid frame 2 which are alternately arranged.

[0022] The first-phase trench section rigid skeleton 1 includes 7 mutually parallel first H-shaped steels 11 arranged in the same plane, and a plurality of mutually parallel first overlapping steel plates 12. A plurality of first overlapping steel plates 12 are welded on both sides of the 7 first H-shaped steels, and the long axis of the first overlapping steel plate 12 is perpendicular to the long axis of the first H-shaped steel 11. The horizontal spacing between any two adjacent first H-shaped steels 11 is 1 meter, and the longitudinal spacing between any two adjacent first overlapping steel plates 12 on the same vertical plane is 1 meter. The height of the first H-shaped steel 11 is 180 mm less than the thickness of the underground continuous wall, and the thickness of the first overlapping steel plate 12 is 20 mm. The top of the first H-shaped steel 11 is flush with the top of the first overlapping steel plate 12 located at the top.

[0023] The second-phase trough section rigid skeleton 2 includes 6 second H-shaped steels 21 which are parallel to each other and arranged in the same plane, and a plurality of second overlapping steel plates 22 which are parallel to each other. A plurality of second overlapping steel plates 22 are welded on both sides of the 6 second H-shaped steels 21, and the long axis of the second overlapping steel plate 22 is perpendicular to the long axis of the second H-shaped steel 21. The horizontal spacing between any two adjacent second H-shaped steels 21 is 1 meter, and the longitudinal spacing between any two adjacent second overlapping steel plates 22 on the same vertical plane is 1 meter. The length of the second overlapping steel plate 22 is 1 meter shorter than the length of the first overlapping steel plate 12, the specifications of the second H-shaped steel 21 are the same as those of the first H-shaped steel 11, and the thickness of the second overlapping steel plate 22 is the same as that of the first overlapping steel plate 12. The top of the second H-shaped steel 21 is flush with the top of the second overlapping steel plate 22 located at the top.

[0024] The construction method of the utility model comprises the following steps:

[0025] A. Weld the rigid frame of the first phase trough section and the rigid frame of the second phase trough section separately at the construction site;

[0026] B. Use a slotting machine or a slot milling machine to dig a first-stage slot section 100 meters underground;

[0027] C. After the first-stage trough section is completed, the first-stage trough section rigid frame is lowered to the designed position in the first-stage trough section;

[0028] D. pouring concrete into the first phase trough section, and forming the first phase trough section underground concrete wall 200 after the concrete in the first phase trough section solidifies;

[0029] E. Complete the construction of the underground concrete wall of the adjacent first-phase trench section according to steps B to D;

[0030] F. Use a slotting machine or a slot milling machine to dig a second-phase slot section underground between the underground concrete walls of two adjacent first-phase slot sections;

[0031] G. After the second phase trough section is completed, the second phase trough section rigid frame is lowered to the designed position in the second phase trough section;

[0032] H. pouring concrete into the second phase trough section, and forming the underground concrete wall of the second phase trough section after the concrete in the second phase trough section solidifies;

[0033] I. Continue construction according to construction steps E to H until the construction of all underground concrete walls of the first phase trench section and 300 underground concrete walls of the second phase trench section is completed.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A rigid framework of an underground continuous wall, characterized in that: It comprises a first-phase slot section rigid skeleton and a second-phase slot section rigid skeleton arranged alternately, wherein the first-phase slot section rigid skeleton comprises N first H-shaped steels which are parallel to each other and arranged in the same plane, and a plurality of first overlapping steel plates which are parallel to each other, and a plurality of first overlapping steel plates are welded to both sides of the N first H-shaped steels, and the long axis of the first overlapping steel plate is perpendicular to the long axis of the first H-shaped steel; the second-phase slot section rigid skeleton comprises N-1 second H-shaped steels which are parallel to each other and arranged in the same plane, and a plurality of second overlapping steel plates which are parallel to each other, and a plurality of second overlapping steel plates are welded to both sides of the N-1 second H-shaped steels, and the long axis of the second overlapping steel plate is perpendicular to the long axis of the second H-shaped steel.

2. The rigid framework according to claim 1, characterized in that: The horizontal distance between any two adjacent first H-shaped steels is 1 meter, and the horizontal distance between any two adjacent second H-shaped steels is 1 meter.

3. The rigid framework according to claim 1, characterized in that: The longitudinal spacing between two adjacent first overlapping steel plates on the same vertical plane is 1 meter, and the longitudinal spacing between two adjacent second overlapping steel plates on the same vertical plane is 1 meter.

4. The rigid framework according to claim 1, characterized in that: The length of the second overlapping steel plate is 1 meter shorter than that of the first overlapping steel plate.

5. The rigid framework according to claim 1, characterized in that: The height of the first H-shaped steel is 180 mm less than the thickness of the underground continuous wall, and the thickness of the first overlapping steel plate is 20 mm; the specifications of the second H-shaped steel are the same as those of the first H-shaped steel, and the thickness of the second overlapping steel plate is the same as that of the first overlapping steel plate.

6. The rigid framework according to claim 1, characterized in that: The top end of the first H-shaped steel is flush with the top end of the first overlapping steel plate located at the top, and the top end of the second H-shaped steel is flush with the top end of the second overlapping steel plate located at the top.

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