Structure for reducing disturbance to existing line structure in shield overpass construction
Through the threaded connection and sliding components of the reinforcement mechanism, transverse steel rods can be quickly installed to form a grid-like support structure, which solves the time-consuming and labor-intensive problem of existing steel frame installation, realizes efficient reinforcement of shield segments and tunnels, and ensures smooth construction of the new tunnel.
Patent Information
- Application Number
- CN202423062927.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The installation of existing assembled steel frames on tunnel segments is time-consuming and labor-intensive, resulting in slow reinforcement of existing tunnels and affecting the construction progress of new tunnels.
A reinforcement mechanism is adopted, including the first bolt, the first longitudinal steel frame, the square nut, the second longitudinal steel frame, the slider, the limit block, the screw, the limit nut and other components. Through threaded connection and sliding connection, the transverse steel rods can be quickly installed to form a grid-like support structure to fix the shield segments and tunnels.
The rapid reinforcement of shield segments and tunnels was achieved, which saved time and effort in installation, improved installation efficiency, and ensured the progress of new tunnel construction.
Smart Images
Figure CN223344044U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel reinforcement, in particular to a structure for reducing disturbance to an existing line structure during shield overspan construction. Background Art
[0002] With the rapid development of urban construction and the increasing density of transportation networks, it is increasingly common for new subway tunnels to cross existing subway tunnels at close distances. During shield tunneling, soil unloading and shield disturbances can cause additional stress and deformation in the existing subway tunnel structure. In severe cases, this can even lead to damage to the tunnel segments, compromising the normal operation and safe use of the existing shield tunnel.
[0003] During the construction of a new tunnel, in order to reduce the deformation caused to the existing shield tunnel, the existing tunnel will be structurally reinforced, thereby reducing the disturbance to the existing tunnel structure. Existing tunnels are usually reinforced with assembled steel frames. The installation of existing assembled steel frames on tunnel segments is time-consuming and labor-intensive, and the installation efficiency is low. The slow reinforcement of the existing tunnel affects the construction progress of the new tunnel. Utility Model Content
[0004] The purpose of the utility model is to provide a structure for reducing the disturbance to the existing line structure during shield overpass construction, so as to solve the problem raised in the above background technology that existing tunnels are usually reinforced by using assembled steel frames, the existing assembled steel frames are time-consuming and labor-intensive to install on the tunnel segments, the installation efficiency is low, the reinforcement of the existing tunnels is slow, and the construction progress of the new tunnel is affected.
[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a structure for reducing disturbance to existing line structures during shield overpass construction: comprising a shield tunnel, shield segments are arranged on the surface of the shield tunnel, a roadbed is arranged on the surface of the shield tunnel, a reinforcement mechanism is arranged on the surface of the roadbed, the reinforcement mechanism comprises a first bolt, the first bolt is threadedly connected to the surface of the roadbed, a first longitudinal steel frame is perforated and connected on the surface of the first bolt, a square nut is engaged and connected on the surface of the first longitudinal steel frame, a second longitudinal steel frame is fixedly connected on the surface of the square nut, a second bolt is threadedly connected on the surface of the square nut, a slider is slidably connected on the surface of the second longitudinal steel frame, the bottom of the slider is fixedly connected to a limit block, a screw is perforated and connected on the surface of the limit block, a limit nut is threadedly connected on the surface of the screw, a limit column is fixedly connected on the surface of the slider, a limit circular groove is provided on the surface of the slider, a transverse steel rod is perforated and connected on the first and second longitudinal steel frames, one end of the transverse steel rod is fixedly connected to the threaded column, and the other end of the transverse steel rod is threadedly connected to the thread groove.
[0006] Preferably, the first longitudinal steel frame and the second longitudinal steel frame are in an arc shape, and both the first longitudinal steel frame and the second longitudinal steel frame are in contact and connected to the surface of the shield segment.
[0007] Preferably, a slot is provided at one end of the first longitudinal steel frame, a limiting hole is provided at the other end of the first longitudinal steel frame, the square nut is snap-connected to the slot of the first longitudinal steel frame, and the first bolt is through-hole connected to the limiting hole of the first longitudinal steel frame.
[0008] Preferably, a guide hole is provided on one side of the slot of the first longitudinal steel frame, and the second bolt passes through the guide hole of the first longitudinal steel frame and is threadedly connected to the square nut. The second bolt limits the position of the square nut on the slot of the first longitudinal steel frame, and the square nut limits the position of the second longitudinal steel frame on the first longitudinal steel frame.
[0009] Preferably, a guide groove is provided at one end of the second longitudinal steel frame away from the first longitudinal steel frame, and the guide groove is in a "T" shape. The slider and the limit block slide on the guide groove of the second longitudinal steel frame. There are two groups of sliders, and the limit column is inserted into the limit circular groove.
[0010] Preferably, a circular hole is provided at the bottom of the limiting block, the screw is connected to the circular hole of the limiting block through a through-hole, and the screw and the limiting nut limit the relative position between the two groups of sliders.
[0011] Preferably, circular holes are opened on the surfaces of the first longitudinal steel frame and the second longitudinal steel frame, the transverse steel rods are inserted into the circular holes of the first longitudinal steel frame and the second longitudinal steel frame, the threaded columns on the transverse steel rods are threadedly connected to the thread grooves of another group of transverse steel rods, and the first group of transverse steel rods on the first longitudinal steel frame and the second longitudinal steel frame are welded to the circular holes of the first longitudinal steel frame and the second longitudinal steel frame.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] 1. Insert the first bolt through the limiting hole of the first longitudinal steel frame and make the first bolt threadedly connected to the roadbed. The first bolt limits the first longitudinal steel frame to the shield segment and the shield tunnel, and then engages the square nut to be connected to the slot of the first longitudinal steel frame. Insert the second bolt through the guide hole of the first longitudinal steel frame and threadedly connect it with the square nut. The second bolt limits the second longitudinal steel frame to the first longitudinal steel frame through the square nut. At this time, slide the slider on the surface of the second longitudinal steel frame so that the limiting column on the slider is inserted into the limiting circular groove of the other set of sliders, and then insert the screw through the circular hole of the limiting block. The limiting nut cooperates with the screw to limit the position between the two sets of limiting blocks, thereby making the two sets of sliders contact and connected together. At this time, the two sets The slider acts as a bridge on the two groups of second longitudinal steel frames, and can insert the transverse steel rods into the circular holes of the first longitudinal steel frame and the second longitudinal steel frame, weld the first group of transverse steel rods to the first longitudinal steel frame and the second longitudinal steel frame, and the next group of transverse steel rods can thread the threaded column into the threaded groove of the previous group of transverse steel rods, so that all transverse steel rods are fixedly installed on the first longitudinal steel frame and the second longitudinal steel frame. At this time, the first longitudinal steel frame, the second longitudinal steel frame and the transverse steel rods are distributed in a grid on the shield segment, thereby realizing the reinforcement of the shield segment and the shield tunnel, making the reinforcement mechanism quick and convenient to assemble, saving time and effort in installation, and having high installation efficiency. The existing tunnel is efficiently reinforced, ensuring the construction progress of the new tunnel. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a frontal perspective schematic diagram of the structure of the present utility model;
[0015] Figure 2 It is a schematic front view of the structure of the utility model;
[0016] Figure 3 It is a front and bottom perspective schematic diagram of the first longitudinal steel frame and the second longitudinal steel frame structure of the present invention;
[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure at A in the middle;
[0018] Figure 5 This is a schematic diagram of a cross-sectional view of the second longitudinal steel frame connection structure of the present invention from a front view and a bottom view;
[0019] Figure 6 This is a front view, sectional, and exploded perspective diagram of the slider connection structure of the present invention;
[0020] Figure 7 This is a partial schematic diagram of a front view and cross-section of the transverse steel rod structure of the present invention.
[0021] In the figure: 1. Shield tunnel; 11. Shield segment; 12. Roadbed; 2. First longitudinal steel frame; 21. Second longitudinal steel frame; 22. First bolt; 23. Square nut; 24. Second bolt; 25. Slider; 26. Limit block; 27. Screw; 28. Limit nut; 29. Limit column; 210. Limit circular groove; 3. Transverse steel rod; 31. Threaded column; 32. Threaded groove. DETAILED DESCRIPTION
[0022] See also Figure 1-7 , an embodiment provided by the utility model:
[0023] A structure for reducing disturbance to existing line structures during shield overpass construction: comprising a shield tunnel 1, the shield tunnel 1 being an existing tunnel, a shield segment 11 being provided on the surface of the shield tunnel 1, a roadbed 12 being provided on the surface of the roadbed 12, a reinforcement mechanism being provided on the surface of the roadbed 12, the reinforcement mechanism comprising a first bolt 22, the first bolt 22 being threadedly connected to the surface of the roadbed 12, a first longitudinal steel frame 2 being perforated and connected on the surface of the first bolt 22, a square nut 23 being snap-connected on the surface of the first longitudinal steel frame 2, a second longitudinal steel frame 21 being fixedly connected on the surface of the square nut 23, a second bolt 24 being threadedly connected on the surface of the square nut 23, a slider 25 being slidably connected on the surface of the second longitudinal steel frame 21, a limit block 26 being fixedly connected to the bottom of the slider 25, a screw 27 being perforated and connected on the surface of the limit block 26, a limit nut 28 being threaded on the surface of the screw 27, The surface of 25 is fixedly connected with a limiting column 29, and a limiting circular groove 210 is provided on the surface of the slider 25. The first longitudinal steel frame 2 and the second longitudinal steel frame 21 are perforated with a transverse steel rod 3, one end of the transverse steel rod 3 is fixedly connected with a threaded column 31, and the other end of the transverse steel rod 3 is threadedly connected with a threaded groove 32. The reinforcement mechanism installs the first longitudinal steel frame 2 on the shield tunnel 1 and the shield segment 11, and then installs the second longitudinal steel frame 21 on the first longitudinal steel frame 2, and then connects the two groups of second longitudinal steel frames 21 together, and then installs multiple groups of transverse steel rods 3 on the first longitudinal steel frame 2, so that the first longitudinal steel frame 2 and the second longitudinal steel frame 21 cooperate with the transverse steel rods 3 to support and reinforce the shield tunnel 1 and the shield segment 11 in a grid shape, and the reinforcement mechanism is quick and convenient to assemble, saves time and effort to install, and has high installation efficiency. It can efficiently reinforce the existing tunnel and ensure the construction progress of the new tunnel.
[0024] Furthermore, the first longitudinal steel frame 2 and the second longitudinal steel frame 21 are arc-shaped, and the first longitudinal steel frame 2 and the second longitudinal steel frame 21 are both in contact and connected to the surface of the shield segment 11. Two groups of first longitudinal steel frames 2 and second longitudinal steel frames 21 are provided, and the two groups of second longitudinal steel frames 21 will not come into contact after being installed on the first longitudinal steel frame 2.
[0025] Furthermore, a slot is provided at one end of the first longitudinal steel frame 2, and a limiting hole is provided at the other end of the first longitudinal steel frame 2. The square nut 23 is engaged with the slot of the first longitudinal steel frame 2, and the first bolt 22 is connected to the limiting hole of the first longitudinal steel frame 2 through a perforation. The first bolt 22 is threadedly connected to the surface of the roadbed 12, so that the first bolt 22 can limit the first longitudinal steel frame 2 on the surface of the roadbed 12, and then limit the first longitudinal steel frame 2 on the surface of the shield segment 11, thereby completing the rapid installation of the first longitudinal steel frame 2.
[0026] Furthermore, a guide hole is opened on one side of the slot of the first longitudinal steel frame 2, and the second bolt 24 passes through the guide hole of the first longitudinal steel frame 2 and is threadedly connected to the square nut 23. The second bolt 24 limits the position of the square nut 23 on the slot of the first longitudinal steel frame 2, and the square nut 23 limits the position of the second longitudinal steel frame 21 on the first longitudinal steel frame 2, thereby completing the installation of the second longitudinal steel frame 21 on the first longitudinal steel frame 2.
[0027] Furthermore, a guide groove is provided at one end of the second longitudinal steel frame 21 away from the first longitudinal steel frame 2, and the guide groove is in a "T" shape. The slider 25 and the limit block 26 slide on the guide groove of the second longitudinal steel frame 21. There are two groups of sliders 25, and the limit columns 29 are inserted into the limit circular groove 210. The limit columns 29 and the limit circular grooves 210 on the two groups of sliders 25 are respectively inserted, so that the two groups of sliders 25 are in contact and connected together.
[0028] Furthermore, a circular hole is opened at the bottom of the limit block 26, and the screw 27 is connected to the circular hole of the limit block 26 through a hole. The screw 27 and the limit nut 28 limit the relative position between the two groups of sliders 25, so that the two groups of sliders 25 become a whole on the second longitudinal steel frame 21, and the overall length formed by the two groups of sliders 25 is longer. The two groups of sliders 25 can slide on the guide groove of the second longitudinal steel frame 21, but the sliders 25 can never slide out of the guide grooves of the two groups of second longitudinal steel frames 21, thereby ensuring that the two groups of second longitudinal steel frames 21 are connected through the two groups of sliders 25.
[0029] Furthermore, circular holes are opened on the surface of the first longitudinal steel frame 2 and the second longitudinal steel frame 21, and the transverse steel rods 3 are inserted into the circular holes of the first longitudinal steel frame 2 and the second longitudinal steel frame 21. There are multiple groups of transverse steel rods 3, and they are evenly arranged. The threaded columns 31 on the transverse steel rods 3 will be threadedly connected to the threaded grooves 32 of another group of transverse steel rods 3. The first group of transverse steel rods 3 on the first longitudinal steel frame 2 and the second longitudinal steel frame 21 are welded to the circular holes of the first longitudinal steel frame 2 and the second longitudinal steel frame 21, and the rear transverse steel rods 3 can be fixedly installed on the upper group of transverse steel rods 3 through the threaded columns 31 and the threaded grooves 32, thereby realizing the fixed installation of the transverse steel rods 3 on the first longitudinal steel frame 2 and the second longitudinal steel frame 21.
[0030] Working principle: The first bolt 22 is passed through the limiting hole of the first longitudinal steel frame 2 and the first bolt 22 is threadedly connected to the roadbed 12. The first bolt 22 limits the first longitudinal steel frame 2 to the shield segment 11 and the shield tunnel 1. The square nut 23 is then engaged and connected to the slot of the first longitudinal steel frame 2. The second bolt 24 is passed through the guide hole of the first longitudinal steel frame 2 and is threadedly connected to the square nut 23. The second bolt 24 limits the second longitudinal steel frame 21 to the first longitudinal steel frame 2 through the square nut 23. At this time, the slider 25 is slid on the surface of the second longitudinal steel frame 21 so that the limiting column 29 on the slider 25 is inserted into the limiting circular groove 210 of the other group of sliders 25. The screw 27 is then passed through the circular hole of the limiting block 26. The limiting nut 28 cooperates with the screw 27 to limit the position between the two groups of limiting blocks 26, thereby making the two groups of sliders 2 5 are in contact and connected together. At this time, the two groups of sliders 25 play a bridging role on the two groups of second longitudinal steel frames 21, so that the transverse steel rods 3 can be inserted into the circular holes of the first longitudinal steel frame 2 and the second longitudinal steel frame 21, and the first group of transverse steel rods 3 are welded to the first longitudinal steel frame 2 and the second longitudinal steel frame 21. The threaded column 31 of the next group of transverse steel rods 3 can be threadedly connected to the threaded groove 32 of the previous group of transverse steel rods 3, so that all transverse steel rods 3 are fixedly installed on the first longitudinal steel frame 2 and the second longitudinal steel frame 21. At this time, the first longitudinal steel frame 2, the second longitudinal steel frame 21 and the transverse steel rods 3 are distributed in a grid on the shield segment 11, thereby realizing the reinforcement of the shield segment 11 and the shield tunnel 1, making the reinforcement mechanism quick and convenient to assemble, saving time and labor, and having high installation efficiency. The existing tunnel is efficiently reinforced, ensuring the construction progress of the new tunnel.
Claims
1. A structure for shield tunneling overpass construction to reduce disturbance to existing line structures, characterized by: The invention comprises a shield tunnel, wherein shield segments are provided on the surface of the shield tunnel, a road bed is provided on the surface of the shield tunnel, and a reinforcement mechanism is provided on the surface of the road bed, wherein the reinforcement mechanism comprises a first bolt, wherein the first bolt is threadedly connected to the surface of the road bed, a first longitudinal steel frame is connected by a through-hole on the surface of the first bolt, a square nut is clamped and connected on the surface of the first longitudinal steel frame, a second longitudinal steel frame is fixedly connected to the surface of the square nut, a second bolt is threadedly connected on the surface of the square nut, a slider is slidably connected to the surface of the second longitudinal steel frame, the bottom of the slider is fixedly connected to a limiting block, a screw is perforated on the surface of the limiting block, a limiting nut is threadedly connected on the surface of the screw, a limiting column is fixedly connected to the surface of the slider, a limiting circular groove is provided on the surface of the slider, a transverse steel rod is perforated and connected on the first longitudinal steel frame and the second longitudinal steel frame, one end of the transverse steel rod is fixedly connected to the threaded column, and the other end of the transverse steel rod is threadedly connected to the thread groove.
2. The structure for reducing disturbance to existing line structures during shield tunneling overpass construction according to claim 1, characterized in that: The first longitudinal steel frame and the second longitudinal steel frame are in an arc shape, and both the first longitudinal steel frame and the second longitudinal steel frame are in contact with and connected to the surface of the shield segment.
3. The structure for reducing disturbance to existing line structures during shield tunneling overpass construction according to claim 1, characterized in that: A slot is provided at one end of the first longitudinal steel frame, and a limiting hole is provided at the other end of the first longitudinal steel frame. The square nut is engaged with the slot of the first longitudinal steel frame, and the first bolt is through-hole connected to the limiting hole of the first longitudinal steel frame.
4. The structure for reducing disturbance to existing line structures during shield tunneling overpass construction according to claim 3, characterized in that: A guide hole is provided on one side of the slot of the first longitudinal steel frame, and the second bolt passes through the guide hole of the first longitudinal steel frame and is threadedly connected to the square nut. The second bolt limits the position of the square nut on the slot of the first longitudinal steel frame, and the square nut limits the position of the second longitudinal steel frame on the first longitudinal steel frame.
5. The structure for reducing disturbance to existing line structures during shield tunneling overpass construction according to claim 4, characterized in that: A guide groove is provided at one end of the second longitudinal steel frame away from the first longitudinal steel frame, and the guide groove is in a "T" shape. The slider and the limit block slide on the guide groove of the second longitudinal steel frame. There are two groups of sliders, and the limit column is inserted into the limit circular groove.
6. The structure for reducing disturbance to existing line structures during shield tunneling overpass construction according to claim 1, characterized in that: A circular hole is provided at the bottom of the limiting block, and the screw rod is connected to the circular hole of the limiting block through a through hole. The screw rod and the limiting nut limit the relative position between the two groups of sliders.
7. The structure for reducing disturbance to existing line structures during shield tunneling overpass construction according to claim 1, characterized in that: Circular holes are opened on the surface of the first longitudinal steel frame and the second longitudinal steel frame, the transverse steel rods are inserted into the circular holes of the first longitudinal steel frame and the second longitudinal steel frame, the threaded columns on the transverse steel rods are threadedly connected to the thread grooves of another group of transverse steel rods, and the first group of transverse steel rods on the first longitudinal steel frame and the second longitudinal steel frame are welded to the circular holes of the first longitudinal steel frame and the second longitudinal steel frame.