Construction structure for excavation, slotting and seam sealing of bad bottom layer foundation pit

Abstract

The utility model relates to the technical field of pipe jacking construction, in particular to a construction structure for excavation, slotting and seam sealing of a bad bottom layer foundation pit, which comprises a mesh and a connecting plate, the surface of the connecting plate is connected with a clamping plate in a sliding manner, one surface of the connecting plate far away from the clamping plate is fixedly connected with a clamping frame, and the inner side of the clamping frame is connected with a screw rod in a clamping manner. The outer surface of the screw rod is sleeved with a plastic sleeve, and one face of the clamping plate is fixedly connected with a clamping rod. Under the connection of the threaded sleeve and the adjusting block, the supporting control effect on the connecting position of the clamping plate on the connecting plate is achieved, under the connection of the clamping plate and the clamping rod, the connecting and supporting operation of a mesh on the connecting plate is facilitated, and under the connection of the clamping frame and the connecting plate and the connection of the abutting plate and the supporting spring, the inserting and supporting effect of the threaded rod in the clamping frame is achieved; through a sectional type connection mode, the convenience of net hanging is improved, the construction operation is simple, and the construction operation can be completed under a certain error.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking construction, in particular to a construction structure for excavating, grooving and sealing seams in a poor bottom foundation pit. Background Art

[0002] The subway station is geographically sensitive and has a complex surrounding environment. The station has unfavorable geological conditions such as silty medium-coarse sand, fine sand, and medium-coarse sand layers with a thickness of about 4 to 6 meters. In order to ensure that water leakage does not occur in the joints of the retaining structure walls (piles) during the subsequent excavation of the station, the foundation pit is divided into sections and layers during the excavation of the foundation pit. The slope is first cut and the groove is excavated, and the mesh spraying and anchoring treatment between the piles is quickly completed before excavation. Before the mesh is sprayed with concrete, the soil of the pile body is manually cleaned, and at the same time, it is checked whether there is water leakage at the location. If there is a small amount of water leakage, drainage and plugging are used in time to stop the water. After completion, the mesh construction is carried out in time. However, when installing the existing mesh, the mesh is installed by expansion bolts. During the installation operation, the installation position of the expansion bolts needs to be accurately controlled. The operation construction has high precision, and deviations in construction and installation are prone to occur, which affects the performance of the mesh construction. Utility Model Content

[0003] The purpose of the utility model is to provide a construction structure for excavating grooves and sealing seams in poor underlying foundation pits, so as to solve the problem proposed in the above-mentioned background technology that during the installation operation, the installation position of the expansion bolts needs to be accurately controlled, the operation construction accuracy is high, and deviations in the construction and installation are prone to occur, thus affecting the performance of the mesh construction.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a construction structure for excavating grooves and sealing seams in poor bottom foundation pits, comprising a mesh and a connecting plate, the surface of the connecting plate is slidably connected to a clamping plate, the side of the connecting plate away from the clamping plate is fixedly connected to a clamping frame, the inner side of the clamping frame is clamped and connected to a screw, the outer surface of the screw is sleeved with a plastic sleeve, one side of the clamping plate is fixedly connected to a clamping rod, the side of the clamping plate away from the clamping rod is fixedly connected to an adjusting block, the outer surface of the adjusting block is sleeved with a threaded sleeve via a threaded sleeve, the surface of the connecting plate is provided with an adjusting groove, the inner side of the clamping frame is fixedly connected to a support spring, and the surface of the support spring is fixedly connected to a resist plate.

[0005] Preferably, the mesh is in a mesh shape, and the clamping plate is connected to the mesh by clamping rods, and the clamping rods are fixedly connected to the surface of the clamping plate in four groups.

[0006] Preferably, a side of the clamping rod away from the clamping plate is in an arc shape, and a cross section of the clamping frame is in a "C" shape.

[0007] Preferably, the screw rod is connected by a clamping connection between a clamping frame and a connecting plate, and the screw rod and the plastic sleeve are connected by threaded rotation.

[0008] Preferably, the cross section of the adjusting block is in a "T" shape, the adjusting block and the adjusting groove are slidably connected, and the screw sleeve is abutted and connected by the adjusting block and the connecting plate.

[0009] Preferably, the card plate is slidably connected to the connecting plate via an adjusting block and an adjusting groove, and the cross section of the card frame is in an "L" shape.

[0010] Preferably, the surface of the abutment plate is in an arc shape, the abutment plate is elastically connected to the bracket via a support spring, and the abutment plate is abuttingly connected to the bracket via a screw rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. Through the connection between the connecting plate and the adjusting groove, the sliding connection between the adjusting block and the adjusting groove, and the fixed connection between the adjusting block and the card plate, the moving operation effect of the connecting position of the card plate on the connecting plate is realized. Under the connection between the screw sleeve and the adjusting block, the supporting control effect of the connecting position of the card plate on the connecting plate is realized. Under the connection between the card plate and the card rod, the connection and support operation of the mesh on the connecting plate is convenient. Through the connection between the card frame and the connecting plate, under the connection between the abutment plate and the support spring, the plug-in support effect of the screw rod in the card frame is realized. Through the segmented connection method, the convenience of hanging the net is improved, and the construction operation is simple, and the construction operation can be completed under a certain error. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the engineering schematic diagram of the utility model

[0014] Figure 2 It is a front view stereoscopic schematic diagram of the structure of the mesh of the utility model;

[0015] Figure 3 It is a partial three-dimensional schematic diagram of the structure of the mesh of the utility model;

[0016] Figure 4 It is a partial rear perspective schematic diagram of the structure of the utility model;

[0017] Figure 5 It is a partial three-dimensional exploded schematic diagram of the connection structure of the connection plate and the clamping plate of the utility model;

[0018] Figure 6 For this utility model Figure 4 Schematic diagram of the three-dimensional explosion of the middle bracket and screw connection structure.

[0019] In the figure: 1. mesh; 2. connecting plate; 3. clamping plate; 4. plastic sleeve; 5. clamping frame; 6. screw rod; 7. adjusting slot; 8. adjusting block; 9. screw sleeve; 10. clamping rod; 11. supporting spring; 12. abutment plate. DETAILED DESCRIPTION

[0020] See also Figure 1-6 , an embodiment provided by the utility model:

[0021] A construction structure for excavating grooves and sealing seams in a poor bottom foundation pit, comprising a mesh 1 and a connecting plate 2, a clamping plate 3 is slidably connected to the surface of the connecting plate 2, a clamping frame 5 is fixedly connected to the side of the connecting plate 2 away from the clamping plate 3, a screw rod 6 is clamped and connected to the inner side of the clamping frame 5, a plastic sleeve 4 is sleeved on the outer surface of the screw 6, a clamping rod 10 is fixedly connected to one side of the clamping plate 3, an adjusting block 8 is fixedly connected to the side of the clamping plate 3 away from the clamping rod 10, a screw sleeve 9 is sleeved on the outer surface of the adjusting block 8 through a threaded sleeve, an adjusting groove 7 is provided on the surface of the connecting plate 2, a supporting spring 11 is fixedly connected to the inner side of the clamping frame 5, a resist plate 12 is fixedly connected to the surface of the supporting spring 11, through the connection between the connecting plate 2 and the adjusting groove 7, under the sliding connection between the adjusting groove 7 and the adjusting block 8, the connection position of the clamping plate 3 on the connecting plate 2 is regulated and controlled, thereby improving the use range and performance of the clamping plate 3 for installing the mesh 1.

[0022] Furthermore, the mesh 1 is in a mesh shape, and the card plate 3 is connected to the mesh 1 by a card rod 10. The card rod 10 is fixedly connected to the surface of the card plate 3 in four groups. Through the connection between the mesh 1 and the card plate 3, and under the fixed connection between the card plate 3 and the card rod 10, the card rod 10 and the mesh 1 are connected by a card, so as to achieve a connection and support effect between the mesh 1 and the card plate 3.

[0023] Furthermore, the side of the clamping rod 10 away from the clamping plate 3 is in an arc shape, and the cross-section of the clamping frame 5 is in a "C" shape. The shape of the clamping rod 10 facilitates the clamping connection operation between the mesh 1 and the clamping plate 3. When the clamping frame 5 and the connecting plate 2 are connected, the connection and support operation of the screw 6 on the connecting plate 2 is facilitated.

[0024] Furthermore, the screw 6 is connected to the connecting plate 2 through the clamping connection of the bracket 5, and the screw 6 and the plastic sleeve 4 are threadedly rotated. Through the clamping connection of the screw 6 and the bracket 5 and the connection of the screw 6 and the plastic sleeve 4, the supporting effect on the action position of the connecting plate 2 is achieved.

[0025] Furthermore, the cross-section of the adjusting block 8 is in a "T" shape, the adjusting block 8 and the adjusting groove 7 are slidably connected, the screw sleeve 9 is abutted and connected with the connecting plate 2 through the adjusting block 8, and through the sliding connection between the adjusting block 8 and the adjusting groove 7, under the fixed connection between the adjusting block 8 and the clamping plate 3, the effect of regulating the position of the clamping plate 3 on the connecting plate 2 is achieved.

[0026] Furthermore, the card plate 3 is slidably connected to the connecting plate 2 through the adjusting block 8 and the adjusting groove 7. The cross-section of the card frame 5 is in an "L" shape. Through the connection between the adjusting block 8 and the screw sleeve 9, and the abutment connection between the screw sleeve 9 and the connecting plate 2, the abutment control effect of the connection position of the card plate 3 on the connecting plate 2 is achieved.

[0027] Furthermore, the surface of the push plate 12 is in an arc shape, and the push plate 12 is elastically connected to the bracket 5 through the support spring 11. The push plate 12 is abutted and connected to the bracket 5 and the screw 6. Under the connection between the bracket 5 and the push plate 12, the connection between the push plate 12 and the support spring 11 realizes the elastic supporting effect of the push plate 12 in the bracket 5, and the action of the push plate 12 completes the abutting support operation of the screw 6 in the bracket 5.

[0028] Working principle: when installing the mesh 1, first drill a hole on the foundation pit surface, insert the plastic sleeve 4 into the hole, and then rotate the screw 6 to deform the plastic sleeve 4 in the hole to achieve the fixing effect of the action position of the screw 6. Then the connecting plate 2 is hung with the bracket 5 and the screw 6. Under the connection of the abutment plate 12 and the support spring 11, the stability of the contact between the screw 6 and the bracket 5 is improved. Finally, under the connection of the bracket 3 and the clamping rod 10, the mesh 1 and the bracket 3 are buckled and connected to complete the installation operation of the mesh 1. When the action position of the screw 6 deviates, the screw sleeve 9 is rotated to separate the screw sleeve 9 and the connecting plate 2. At this time, the bracket 3 changes its position on the connecting plate 2 through the adjusting block 8 and the adjusting slot 7. After adjusting to the corresponding position, the screw sleeve 9 is rotated in the opposite direction to make the screw sleeve 9 and the connecting plate 2 abut against each other, thereby achieving the fixing effect of the action position of the bracket 3 on the connecting plate 2, and improving the convenience and scope of the installation and use of the mesh 1.

Claims

1. A construction structure for excavating, cutting and sealing the foundation pit of a poor bottom layer, comprising a mesh and a connecting plate, characterized in that: The surface of the connecting plate is slidably connected to a card plate, a side of the connecting plate away from the card plate is fixedly connected to a card frame, the inner side of the card frame is snap-connected with a screw, the outer surface of the screw is sleeved with a plastic sleeve, one side of the card plate is fixedly connected to a card rod, a side of the card plate away from the card rod is fixedly connected to an adjusting block, the outer surface of the adjusting block is sleeved with a threaded sleeve, an adjusting groove is provided on the surface of the connecting plate, a support spring is fixedly connected to the inner side of the card frame, and the surface of the support spring is fixedly connected to a resist plate.

2. The construction structure for excavating, cutting and sealing the foundation pit of a poor bottom layer according to claim 1 is characterized by: The mesh is in a mesh shape, and the clamping plate is connected to the mesh by clamping rods, and the clamping rods are fixedly connected to the surface of the clamping plate in four groups.

3. The construction structure for excavating, cutting and sealing the foundation pit of a poor bottom layer according to claim 1 is characterized by: The side of the clamping rod away from the clamping plate is in an arc shape, and the cross section of the clamping frame is in a "C" shape.

4. The construction structure for excavating, cutting and sealing the foundation pit of a poor bottom layer according to claim 1 is characterized by: The screw rod is connected by clamping the bracket and the connecting plate, and the screw rod and the plastic sleeve are connected by threaded rotation.

5. The construction structure for excavating, cutting and sealing the foundation pit of a poor bottom layer according to claim 1 is characterized by: The cross section of the adjusting block is in a "T" shape, the adjusting block and the adjusting groove are slidably connected, and the screw sleeve is abutted and connected by the adjusting block and the connecting plate.

6. The construction structure for excavating, cutting and sealing the foundation pit of a poor bottom layer according to claim 1 is characterized by: The card plate is slidably connected to the connecting plate through an adjusting block and an adjusting groove, and the cross section of the card frame is in an "L" shape.

7. The construction structure for excavating, cutting and sealing the foundation pit of a poor bottom layer according to claim 1 is characterized by: The surface of the abutment plate is in an arc shape, the abutment plate is elastically connected to the bracket through a support spring, and the abutment plate is abutted and connected to the bracket and the screw rod through an engagement connection.

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