Progressive excavation support structure for ancillary underground structures

Abstract

To provide a progressive excavation support structure for ancillary underground structures in the field of building construction. The present invention includes a foundation pile 1, a wall 11, and a corbel piece 4, a main structural plate 2 is cast on the surface of the foundation pile, and an auxiliary structural plate 3 is cast between the foundation pile and the wall, the corbel piece acts on the surface of the main structural plate, an I-beam 5 is abutted and connected to the surface of the corbel piece, and the end of the I-beam away from the corbel piece abuts and contacts the wall by a bolt, and a connecting block is fixedly connected to the outer surface of the corbel piece. The connection between the corbel piece and the I-beam realizes a supporting effect for the construction process of the auxiliary structural plate through the action of the I-beam, achieves the purpose of digging the pile during construction and casting in one go, does not form a post-injection zone, improves construction quality, and through the abutment contact between the adjustment lever and the pressure plate, improves the connection stability performance of the I-beam corbel piece through the action of the pressure plate.

Description

[Technical field]

[0001] The present invention relates to the technical field of building construction, and more particularly to a progressive excavation support structure for ancillary underground structures. [Background technology]

[0002] After the construction of the main body of an underground station is completed, it is necessary to build the auxiliary underground structure. The traditional construction method involves digging piles after construction, which requires digging piles between the main structure and the auxiliary structure. After the piles are excavated, concrete needs to be poured again, forming a post-injection zone. There is a gap between the post-injection zone and the original concrete structure, which is not a one-piece construction and presents a risk of water leakage. Summary of the Invention [Problem to be solved by the invention]

[0003] The objective of the present invention is to provide a progressive excavation support structure for an auxiliary underground structure, in order to solve the problem proposed in the above background art that piles need to be excavated between the main structure and the auxiliary structure, forming a post-injection zone, and that there exists a risk of water leakage in the post-injection zone. [Means for solving the problem]

[0004] In order to achieve the above object, the present invention provides the following technical solution, in which the gradual excavation support structure of the auxiliary underground structure includes a foundation pile, a wall body, and a corbel part, a main structural plate is cast on the surface of the foundation pile, an auxiliary structural plate is cast between the foundation pile and the wall body, the corbel part acts on the surface of the main structural plate, an I-beam is abutted and connected to the surface of the corbel part, the end of the I-beam away from the corbel part abuts and contacts the wall body by a bolt, a connecting block is fixedly connected to the outer surface of the corbel part, and a reinforcing plate is installed on both sides of the I-beam. a screw is fixedly connected to the surface of the I-beam that contacts the reinforcing plate, a pressure bar and a helical insert are fitted to the outer surface of the screw, an adjustment lever is passed through and connected to the surface of the corbel part, a pressure plate is installed on the surface of the corbel part that contacts the I-beam, an expansion spring is fixedly connected to the surface of the pressure plate, a fixing screw is fixedly connected to the surface of the main structural plate, a control plate is fitted to the outer surface of the fixing screw, an adjustment groove is passed through and opened in the surface of the control plate, and a pressure frame is fixedly connected to the surface of the control plate.

[0005] Preferably, the I-beam acts above the accessory structural plate through a corbel part, the connecting blocks are connected to the outer surface of the corbel part in three sets, bolts are installed on the surface of the main structural plate, and the bolts are connected to the connecting blocks.

[0006] Preferably, the reinforcing plate is in the form of a plate and movably connected to the I-beam, and the reinforcing plate is distributed in two sets on both sides of the I-beam in an opposing manner.

[0007] Preferably, the pressure bar is rotatably connected to the I-beam by a screw, the helical insert is screwed to the screw, and the pressure bar acts on the upper surface of the reinforcing plate by the screw.

[0008] Preferably, a groove is formed on the surface of the corbel part that contacts the I-beam, the pressure plate acts on the surface of the corbel part through the groove, and the adjustment lever passes through the corbel part and abuts against the pressure plate to make contact.

[0009] Preferably, the pressure plate is elastically and slidably connected to the corbel part by an expansion spring, a tapered strip is fixedly connected to a surface of the pressure plate away from the expansion spring, and the tapered strip is uniformly distributed on the surface of the pressure plate.

[0010] Preferably, the control plate is slidably connected to the fixing screw by an adjustment groove, and the pressing frame abuts against and contacts the connecting block by the control plate. Effect of the Invention

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The connection between the foundation pile and the main structural plate, and the connection between the corbel part and the connecting block, through the action of the bolt, realizes the supporting effect for the connection of the corbel part in the main structural plate, and the connection between the corbel part and the I-beam, through the action of the I-beam, realizes the supporting effect for the construction process of the auxiliary structural plate. This achieves the purpose of digging the piles during construction and casting in one go, without forming a post-injection zone, and improves the construction quality.

[0013] 2. By connecting the I-beam and the reinforcing plate, through the action of the pressure bar and the helical insert, a support control effect is realized for the connection angle of the reinforcing plate in the I-beam, and the construction area of ​​the I-beam is improved. Through the connection between the control plate and the holding frame, through the action of the adjustment groove and the fixing screw, the support operation of the main structural plate of the connecting block is completed, and the placement stability performance of the main structural plate of the corbel part is improved. Through the abutment contact between the adjustment lever and the holding plate, the connection stability performance of the I-beam corbel part is improved through the action of the holding plate. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a front view of the structure of the present invention; [Diagram 2] FIG. 2 is a schematic front perspective view of the structure of the present invention; [Diagram 3] FIG. 2 is a schematic perspective view of the structure of the present invention; [Figure 4] 1 is a schematic cross-sectional view of a partial perspective view of a connection structure between a corbel component and an I-beam according to the present invention; FIG. [Diagram 5] FIG. 2 is a schematic diagram of a partial perspective view of the structure of an I-beam according to the present invention; [Figure 6] FIG. 4 is an enlarged schematic diagram of the structure of the present invention shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] 1 to 6, one embodiment of the present invention is shown.

[0016] The gradual excavation support structure for the auxiliary underground structure includes a foundation pile 1, a wall 11, and a corbel part 4, a main structural plate 2 is cast on the surface of the foundation pile 1, an auxiliary structural plate 3 is cast between the foundation pile 1 and the wall 11, the corbel part 4 acts on the surface of the main structural plate 2, an I-shaped steel 5 is abutted and connected to the surface of the corbel part 4, the end of the I-shaped steel 5 away from the corbel part 4 abuts and contacts the wall 11 by a bolt, a connecting block 41 is fixedly connected to the outer surface of the corbel part 4, a reinforcing plate 6 is installed on both sides of the I-shaped steel 5, a screw 61 is fixedly connected to the surface of the I-shaped steel 5 that contacts the reinforcing plate 6, a pressure bar 62 and a helical insert 63 are fitted to the outer surface of the screw 61, an adjustment lever 7 is passed through and connected to the surface of the corbel part 4, a pressing plate 71 is installed on the surface of the corbel part 4 that contacts the I-shaped steel 5, and an expansion and contraction bar is installed on the surface of the pressing plate 71. The bolt 72 is fixedly connected, the fixing screw 8 is fixedly connected to the surface of the main structural plate 2, the control plate 81 is fitted on the outer surface of the fixing screw 8, the adjustment groove 82 is opened on the surface of the control plate 81, and the pressure frame 83 is fixedly connected to the surface of the control plate 81. Through the connection between the corbel part 4 and the connecting block 41, the connection between the bolt in the main structural plate 2 and the connecting block 41 realizes the support effect of the connection of the corbel part 4 in the main structural plate 2, and through the action of the corbel part 4 and the pressure plate 71, the support effect of the connection position of the I-beam 5 in the corbel part 4 is realized. The driving of the auxiliary structural plate 3 is completed in sequence from top to bottom, and the necessary tools are transported by the main underground structure consisting of the foundation pile 1 and the main structural plate 2. After the upper construction is completed, the corresponding foundation pile 1 is removed, and the function effect of gradually excavating is achieved.

[0017] Furthermore, the I-beam 5 acts above the accessory structural plate 3 through the corbel part 4, and the connecting blocks 41 are connected to the outer surface of the corbel part 4 in three sets. Bolts are installed on the surface of the main structural plate 2, and the bolts are connected to the connecting blocks 41. Through the connection between the corbel part 4 and the main structural plate 2, the corbel part 4 acts to realize a supporting effect for the construction of the I-beam 5.

[0018] Furthermore, the reinforcing plate 6 is plate-shaped and movably connected to the I-steel 5, and the reinforcing plate 6 is distributed in two sets facing each other on both sides of the I-steel 5. By connecting the reinforcing plate 6 to the I-steel 5, the action of the reinforcing plate 6 increases the area of ​​construction usable for the I-steel 5.

[0019] Furthermore, the pressure bar 62 is rotatably connected to the I-beam 5 by the screw 61, and the helical insert 63 is screwed into the screw 61. The pressure bar 62 acts on the upper surface of the reinforcing plate 6 by the screw 61, and through the connection between the screw 61 and the pressure bar 62, the connection between the screw 61 and the helical insert 63 completes the control operation for the connection angle of the pressure bar 62 in the I-beam 5.

[0020] Furthermore, a groove is formed on the surface of the corbel part 4 that contacts the I-beam 5, and the pressure plate 71 acts on the surface of the corbel part 4 through the groove, and the adjustment lever 7 penetrates the corbel part 4 and abuts against the pressure plate 71. The connection between the corbel part 4 and the adjustment lever 7, and the abutment contact between the adjustment lever 7 and the pressure plate 71, achieves the control and support effect of the connection position of the pressure plate 71 on the corbel part 4.

[0021] Furthermore, the pressure plate 71 is elastically and slidably connected to the corbel part 4 by the expansion spring 72, and a taper strip is fixedly connected to the surface of the pressure plate 71 away from the expansion spring 72. The taper strip is uniformly distributed on the surface of the pressure plate 71, and through the action of the connecting taper strip in the pressure plate 71, the connecting stability performance of the I-beam 5 in the corbel part 4 is improved.

[0022] Furthermore, the control plate 81 is slidably connected to the fixing screw 8 through the adjustment groove 82, and the pressure frame 83 abuts against and comes into contact with the connecting block 41 through the control plate 81. Through the connection between the fixing screw 8 and the adjustment groove 82, the control operation of the connection position of the pressure frame 83 on the main structural plate 2 is completed through the connection between the control plate 81 and the adjustment groove 82, and the abutment contact between the pressure frame 83 and the connecting block 41 further reinforces the stability of the connection of the corbel part 4 to the main structural plate 2.

[0023] Working principle: When carrying out the construction of the auxiliary structure, firstly, the corbel piece 4 is attached onto the main structural plate 2, and the corbel piece 4 is used to support the I-beam 5. Then, the adjustment lever 7 is rotated to change the position of the pressure plate 71 on the corbel piece 4. At this time, the pressure plate 71 abuts against the I-beam 5, enhancing the contact stability between the corbel piece 4 and the I-beam 5. Then, by installing the fixing screw 8, the control plate 81, through the action of the adjustment groove 82, completes the control of the construction position of the pressure frame 83. The abutment contact between the pressure frame 83 and the connecting block 41 further improves the placement stability of the corbel piece 4 on the main structural plate 2. The placement of the I-beam 5 completes the casting operation of the auxiliary structural plate 3 through the action of the formwork, thereby realizing the digging of the piles during construction, achieving the purpose of casting in one go without forming a post-injection zone, and improving the construction quality. [Explanation of symbols]

[0024] 1 Foundation piles 11 Wall 2 Main body structure plate 3. Accessory structural plate 4 Corbel parts 41 Connecting Blocks 5 I-beam 6 Reinforcement plate 61 Screw 62 Pressure bar 63 Helisert 7 Adjustment lever 71 Presser plate 72 Extension Spring 8 Fixing screw 81 Control Board 82 Adjustment groove 83 Presser frame

Claims

1. A progressive excavation support structure for an auxiliary underground structure, comprising a foundation pile, a wall, and a corbel part, wherein a main structural plate is cast on the surface of the foundation pile, and an auxiliary structural plate is cast between the foundation pile and the wall, the corbel part acts on the surface of the main structural plate, an I-beam is abutted and connected to the surface of the corbel part, the end of the I-beam away from the corbel part abuts and contacts the wall by a bolt, a connecting block is fixedly connected to the outer surface of the corbel part, a reinforcing plate is installed on both sides of the I-beam, and a screw is fixedly connected to the surface of the I-beam that contacts the reinforcing plate. a pressure bar and a helical insert are fitted to the outer surface of the screw, an adjustment lever is passed through and connected to the surface of the corbel part, a pressure plate is installed on the surface of the corbel part that contacts the I-beam, an expansion spring is fixedly connected to the surface of the pressure plate, a fixing screw is fixedly connected to the surface of the main structure plate, a control plate is fitted to the outer surface of the fixing screw, an adjustment groove is passed through and opened in the surface of the control plate, and a pressure frame is fixedly connected to the surface of the control plate.

2. The progressive excavation support structure for the auxiliary underground structure as described in claim 1, characterized in that the I-beam acts on the upper side of the auxiliary structural plate by a corbel part, the connecting blocks are connected to the outer surface of the corbel part in three sets, bolts are installed on the surface of the main structural plate, and the bolts are connected to the connecting blocks.

3. The progressive excavation support structure for an auxiliary underground structure according to claim 1, characterized in that the reinforcing plate is in the form of a plate and movably connected to the I-beam, and the reinforcing plate is distributed in two sets opposite to each other on both sides of the I-beam.

4. The progressive excavation support structure for an auxiliary underground structure as described in claim 1, characterized in that the pressure bar is rotatably connected to the I-beam by a screw, the helical insert is screwed to the screw, and the pressure bar acts on the upper surface of the reinforcing plate by the screw.

5. The gradual excavation support structure for the auxiliary underground structure according to claim 1, characterized in that a groove is opened on the surface of the corbel part that contacts the I-beam, the pressure plate acts on the surface of the corbel part through the groove, and the adjustment lever passes through the corbel part and abuts against and contacts the pressure plate.

6. The gradual excavation support structure for an auxiliary underground structure as described in claim 1, characterized in that the pressure plate is elastically and slidably connected to the corbel part by an expansion spring, a taper strip is fixedly connected to the surface of the pressure plate away from the expansion spring, and the taper strip is uniformly distributed on the surface of the pressure plate.

7. The progressive excavation support structure for an auxiliary underground structure according to claim 1, characterized in that the control plate is slidably connected to the fixing screw by an adjustment groove, and the pressing frame abuts and contacts the connecting block by the control plate.

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