Novel reinforcement cage structure of underground diaphragm wall of deep foundation pit

Abstract

The utility model relates to the technical field of reinforcement cages, and discloses a novel reinforcement cage structure of a deep foundation pit underground diaphragm wall, which comprises a plurality of groups of reinforcement bodies arranged in the circumferential direction, bottom reinforcement components are clamped and sleeved at the bottoms of reinforcement bodies of the reinforcement bodies, and a plurality of groups of stirrup components are arranged and sleeved outside the reinforcement bodies of the reinforcement bodies. When the underground diaphragm wall reinforcement cage structure is spliced and assembled, the reinforcement bodies can be uniformly arranged, spliced and fixed in a modularized and unified mode to form the reinforcement cage structure by utilizing bottom support limiting of the bottom reinforcement parts and stirrup guiding of the stirrup parts, and the underground diaphragm wall reinforcement cage structure has the advantages of being convenient and efficient to assemble, accurate and unified in assembly and high in practicability. On one hand, the splicing and assembling strength of constructors on the reinforcement cage can be reduced, the assembling efficiency is improved, and on the other hand, the splicing and assembling accuracy and uniformity of the reinforcement cage can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel cages, in particular to a novel steel cage structure of an underground continuous wall of a deep foundation pit. Background Art

[0002] The underground continuous wall is a foundation project that uses a trenching machine on the ground to dig a long and narrow deep trench along the peripheral axis of the deep excavation project under the condition of mud wall protection. After the trench is cleaned, a steel cage is suspended in the trench, and then underwater concrete is poured using the conduit method to form a unit trench section. This process is carried out section by section to build a continuous reinforced concrete wall underground. It serves as a water-cutting, anti-seepage, load-bearing and water-retaining structure. It is widely used in the construction of deep foundation pits in urban subways, high-speed railways and underground stations.

[0003] As the steel support structure of the underground continuous wall, the steel cage plays a major role in bearing pressure. During the continuous construction of the underground wall, such as the underground continuous wall construction method of a rail transit project disclosed in CN201910281207.3, it is necessary to temporarily clamp and assemble the steel cage. However, when the existing form of steel cage structure is erected and assembled, due to the different skills of the construction workers, the splicing and assembly of the steel cage often cannot achieve a unified structural style. There are large deviations between their specifications, which affects the stability of the overall structure. At the same time, the assembly operation is relatively cumbersome and time-consuming.

[0004] To this end, those skilled in the art provide a novel steel cage structure for an underground continuous wall of a deep foundation pit to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0005] The main purpose of the utility model is to provide a novel steel cage structure for an underground continuous wall of a deep foundation pit, which can effectively solve the problems in the background technology that the splicing and assembly of the existing steel cage structure is time-consuming and the style uniformity is poor.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a new type of steel cage structure for underground continuous wall of deep foundation pit, comprising a plurality of groups of steel body arranged in a circumferential direction, the bottom of the steel body of the steel body is clamped with a bottom reinforcement component, and the outer arrangement of the steel body of the steel body is sleeved with a plurality of groups of stirrup components;

[0007] The bottom rib component comprises a bottom rib, a plurality of groups of stop sleeves are arranged along the circumference of the inner wall of the ring frame of the bottom rib and are opposite to the steel bar body, and a bottom support bracket is arranged inside the ring frame of the bottom rib;

[0008] The stirrup component comprises stirrups, and the inner wall of the stirrup ring frame is provided with a plurality of groups of guide sleeves corresponding to the steel bar body arranged along the circumference thereof.

[0009] As a further solution of the utility model: the stop sleeve is a bottom edge sealing structure, and the guide sleeve is a conducting structure.

[0010] As a further solution of the utility model: the steel rings of the bottom reinforcement and the stirrups are the same in size.

[0011] As a further solution of the utility model: the number of the stop clamping sleeve and the guide clamping sleeve is the same, and the stop clamping sleeve and the guide clamping sleeve are arranged symmetrically in a ring shape.

[0012] As a further solution of the utility model: the hole wall of the stop sleeve is provided with a first welding hole, and the hole wall of the guide sleeve is provided with a second welding hole.

[0013] As a further solution of the present invention: the bottom support bracket is a tripod support structure.

[0014] As a further solution of the utility model: the steel cage structure also includes a plurality of groups of anchor rod components which are circumferentially arranged and sleeved on the outside of the bottom reinforcement component.

[0015] As a further solution of the utility model: the anchor rod component includes a lower clamping sleeve and an upper clamping sleeve arranged horizontally opposite to each other, and the mating surfaces of the lower clamping sleeve and the upper clamping sleeve are successively provided with mating grooves A and mating grooves B adapted to the bottom rib component, knob bolts are symmetrically arranged on both sides of the clamping block of the lower clamping sleeve, and tightening buckles opposite to the knob bolts are symmetrically arranged on both sides of the clamping block of the upper clamping sleeve, and an anchor rod is arranged at the bottom of the lower clamping sleeve.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. When the underground continuous wall steel cage structure of the utility model is spliced ​​and assembled, by utilizing the bottom support limit of the bottom reinforcement component and the stirrup guide of the stirrup component, the steel body can be evenly arranged, assembled and fixed in a modular and unified style to form a steel cage structure. It has the characteristics of convenient and efficient assembly, precise and uniform assembly. On the one hand, it can reduce the splicing and assembly strength of the steel cage by construction personnel and improve the assembly efficiency. On the other hand, it can improve the splicing and assembly accuracy and uniformity of the steel cage.

[0018] 2. When the underground continuous wall steel cage structure of the utility model is erected in a deep foundation pit, the pre-assembly and fixation of the anchor rod components and the bottom reinforcement components can be utilized. The pre-insertion of the anchor rod components can be utilized to stably place the steel cage structure upright. The insertion and fixation of the anchor rod components to the foundation pit soil can prevent the steel cage structure from shaking or floating during the subsequent concrete pouring, thereby improving the pouring stability and firmness of the steel cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a new type of steel cage structure of an underground continuous wall of a deep foundation pit according to the utility model;

[0020] Figure 2 This is a schematic structural diagram of a bottom reinforcement component in a reinforcement cage structure of a new type of underground continuous wall for a deep foundation pit according to the utility model;

[0021] Figure 3 It is a structural schematic diagram of a stirrup component in a reinforcement cage structure of a new type of underground continuous wall of a deep foundation pit according to the utility model;

[0022] Figure 4 The utility model is a structural schematic diagram of an anchor rod component in a reinforcement cage structure of a new type of underground continuous wall of a deep foundation pit.

[0023] In the figure: 1. steel bar body; 2. bottom reinforcement component; 21. bottom reinforcement; 22. stop sleeve; 23. first welding hole; 24. bottom support bracket; 3. stirrup component; 31. stirrup; 32. guide sleeve; 33. second welding hole; 4. anchor rod component; 41. lower sleeve; 42. upper sleeve; 43. matching slot A; 44. matching slot B; 45. knob bolt; 46. pressing buckle; 47. anchor rod. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Please refer to Figure 1-4 As shown, a new type of steel cage structure of an underground continuous wall of a deep foundation pit comprises a plurality of groups of steel body bodies 1 arranged in a circumferential direction, a bottom sleeve of the steel body of the steel body 1 is provided with a bottom reinforcement component 2, the bottom reinforcement component 2 comprises a bottom reinforcement 21, a plurality of groups of stirrup components 3 are arranged outside the steel body of the steel body 1, the stirrup components 3 comprise stirrups 31, the steel rings of the bottom reinforcement 21 and the stirrups 31 are of the same size, the number of the stop sleeves 22 and the guide sleeves 32 are the same, and the stop sleeves 22 and the guide sleeves 32 are arranged symmetrically in a ring shape, and the ring limit of the steel body 1 is limited by the stop sleeves 22 and the guide sleeves 32. On the one hand, the steel body 1 can be evenly arranged in a uniform circumferential direction, thereby improving the convenience and accuracy of its splicing and assembly, and on the other hand, the bottom reinforcement 21 and the stirrups 31 can be used to hoop the steel body 1 to form a strong steel cage structure.

[0028] The inner wall of the ring frame of the bottom reinforcement 21 is provided with a plurality of groups of stop sleeves 22 arranged along its circumferential direction opposite to the steel bar body 1, and the inner wall of the ring frame of the stirrup 31 is provided with a plurality of groups of guide sleeves 32 arranged along its circumferential direction opposite to the steel bar body 1. The stop sleeve 22 is a bottom edge sealing structure, and the guide sleeve 32 is a conductive structure. By using the stop sleeve 22 with a bottom edge sealing style to limit the bottom support of the steel bar body 1, the steel bar body 1 can be arranged and installed at the same height, thereby improving the accuracy of splicing and assembly of the steel cage structure. By using the guide sleeve 32 with a conductive style to limit the hoop sleeve of the steel bar body 1, the stirrup component 3 can limit the steel bar body 1, so that multiple groups of steel bar bodies 1 can be stably erected and assembled.

[0029] A first welding hole 23 is provided in the hole wall of the stop sleeve 22, and a second welding hole 33 is provided in the hole wall of the guide sleeve 32. By providing the first welding hole 23 and the second welding hole 33 on the stop sleeve 22 and the guide sleeve 32, after the steel bar body 1 is pulled through, the steel bar body 1 can be spot welded and fixed to the bottom reinforcement component 2 and the stirrup component 3 in turn through the welding holes, thereby improving the stability and firmness of the connection.

[0030] A bottom support bracket 24 is arranged inside the ring frame of the bottom reinforcement 21. The bottom support bracket 24 is a tripod structure. When the steel cage is vertically placed and hoisted into a deep foundation pit, the tripod-shaped bottom support bracket 24 can cooperate with the bottom reinforcement 21 to form a stable bottom support frame, so that the steel cage structure can be placed vertically stably.

[0031] The steel cage structure also includes a plurality of anchor rod components 4 which are circumferentially arranged and sleeved on the outside of the bottom reinforcement component 2. The anchor rod component 4 includes a lower clamping sleeve 41 and an upper clamping sleeve 42 which are arranged horizontally opposite to each other. The mating surfaces of the lower clamping sleeve 41 and the upper clamping sleeve 42 are sequentially provided with mating grooves A43 and B44 which are adapted to the bottom reinforcement component 2. The two sides of the clamping block of the lower clamping sleeve 41 are symmetrically provided with knob bolts 45. The two sides of the clamping block of the upper clamping sleeve 42 are symmetrically provided with pressing buckles 46 which are opposite to the knob bolts 45. The bottom of the lower clamping sleeve 41 is provided with an anchor rod 4 7. After the steel cage structure is basically assembled, the lower clamping sleeve 41 and the upper clamping sleeve 42 in the anchor rod component 4 are clamped on the bottom reinforcement 21 of the bottom reinforcement component 2 in a clamping manner, and the knob bolt 45 is rotated to clamp it into the clamp buckle 46 at the same time, and the knob bolt 45 is tightened to fix the lower clamping sleeve 41 and the upper clamping sleeve 42, so that the anchor rod 47 at the bottom is fixed to the bottom of the steel cage structure. As an anchor rod component, it is inserted into the soil of the deep foundation pit to improve the vertical stability of the steel cage structure and prevent the steel cage structure from shaking, floating, etc. during the subsequent concrete pouring.

[0032] The working principle of the utility model is as follows: when assembling a steel cage in the form of an underground continuous wall in a deep foundation pit, the stop sleeve 22 in the bottom reinforcement component 2 is used as the zero-position installation point, and multiple groups of steel bar bodies 1 are arranged and installed in a uniform horizontal alignment manner, and then the guide sleeve 32 in the stirrup component 3 is used as the limit installation point to erect and assemble multiple groups of steel bar bodies 1 in a uniform circumferential arrangement manner, and then the bottom support of the steel bar body 1 is limited by the bottom reinforcement component 2, and the stirrups of the steel bar body 1 are limited by multiple groups of stirrup components 3, so that the steel cage structure is spliced ​​and assembled in a uniform manner, and after the assembly is completed, the steel bar body 1 is spot-welded and fixed to the bottom reinforcement component 2 and the stirrup component 3 in turn through the welding holes on the two groups of sleeves, and then after the steel cage structure is substantially assembled, the lower sleeve 41 and the upper sleeve 42 in the anchor rod component 4 are connected. The clamp is clamped on the bottom reinforcement 21 of the bottom reinforcement component 2 in a clamping manner, and the lower clamp 41 and the upper clamp 42 are fixed by the tightening positioning combination of the knob bolt 45 and the pressing buckle 46, so that the anchor rod 47 at the bottom is fixed to the bottom of the steel cage structure. As an anchor rod component, when the steel cage structure is subsequently hoisted into the deep foundation pit, the anchor rod component 4 is used to insert its anchor rod 47 into the soil of the deep foundation pit to improve the vertical stability of the steel cage structure and prevent the steel cage structure from shaking or floating during the subsequent concrete pouring. It has good and convenient standardized assembly characteristics. On the one hand, it can reduce the splicing and assembly strength of the steel cage by construction personnel and improve assembly efficiency. On the other hand, it can improve the uniformity of the splicing and assembly of the steel cage, which is convenient for subsequent hoisting and stable pouring.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. 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, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A new type of steel cage structure for underground continuous wall of deep foundation pit, comprising a plurality of groups of steel bar bodies (1) arranged in a circumferential direction, characterized in that: The bottom of the reinforcement body of the reinforcement body (1) is sleeved with a bottom reinforcement component (2), and the reinforcement body of the reinforcement body (1) is sleeved with a plurality of groups of stirrup components (3) arranged outside. The bottom rib component (2) comprises a bottom rib (21), a plurality of groups of stop sleeves (22) arranged along the circumference of the inner wall of the ring frame of the bottom rib (21) and corresponding to the steel bar body (1), and a bottom support bracket (24) is arranged inside the ring frame of the bottom rib (21); The stirrup component (3) comprises stirrups (31), and the inner wall of the ring frame of the stirrups (31) is provided with a plurality of groups of guide sleeves (32) arranged along the circumference thereof and opposite to the steel bar body (1).

2. A new type of steel cage structure for underground continuous wall of deep foundation pit according to claim 1, characterized in that: The stop sleeve (22) is a bottom edge sealing structure, and the guide sleeve (32) is a conducting structure.

3. The new steel cage structure of the underground continuous wall of a deep foundation pit according to claim 1 is characterized in that: The steel rings of the bottom reinforcement (21) and the stirrups (31) are of the same size.

4. The new steel cage structure of the underground continuous wall of a deep foundation pit according to claim 1 is characterized in that: The number of the stop clamping sleeves (22) and the number of the guide clamping sleeves (32) are the same, and the stop clamping sleeves (22) and the guide clamping sleeves (32) are arranged symmetrically in a ring shape.

5. The new steel cage structure of underground continuous wall of deep foundation pit according to claim 1 is characterized in that: A first welding hole (23) is formed in the hole wall of the stop sleeve (22), and a second welding hole (33) is formed in the hole wall of the guide sleeve (32).

6. The new steel cage structure of underground continuous wall of deep foundation pit according to claim 1 is characterized in that: The bottom support bracket (24) is a tripod bracket structure.

7. The new steel cage structure of underground continuous wall of deep foundation pit according to claim 1 is characterized in that: It also includes a plurality of groups of anchor rod components (4) which are arranged in a circumferential direction and are hooped around the outside of the bottom rib component (2).

8. The new steel cage structure for underground continuous wall of deep foundation pit according to claim 7 is characterized in that: The anchor rod component (4) comprises a lower clamping sleeve (41) and an upper clamping sleeve (42) arranged horizontally opposite to each other, and the mating surfaces of the lower clamping sleeve (41) and the upper clamping sleeve (42) are respectively provided with a mating groove A (43) and a mating groove B (44) adapted to the bottom rib component (2), knob bolts (45) are symmetrically arranged on both sides of the clamping block of the lower clamping sleeve (41), and pressing buckles (46) opposite to the knob bolts (45) are symmetrically arranged on both sides of the clamping block of the upper clamping sleeve (42), and an anchor rod (47) is arranged at the bottom of the lower clamping sleeve (41).

Images