An anchor-cable type corrugated steel pipe gallery anti-floating and deviation-correcting device and construction method thereof

Abstract

The invention discloses an anchor-cable type corrugated steel pipe gallery anti-floating and deviation correction device and a construction method thereof. The anti-floating and deviation correction device comprises a pipe gallery and an anchor cable. The pipe gallery is arranged in a pipe gallery base trench. Each section of the pipe gallery is horizontally and obliquely arranged with a plurality of flat-pull anchor cables and oblique-pull anchor cables to the surrounding soil slope. One end of the anchor cable is anchored in the slope soil, and the other end is tightly connected to the side plate of the pipe gallery. The flat-pull anchor cables and oblique-pull anchor cables are symmetrically arranged on both sides of the pipe gallery. The vertical component forces of the oblique-pull anchor cables on both sides limit the vertical displacement of the pipe gallery downward, thereby playing an anti-floating role. The pipe gallery is moved left and right by adjusting the tensioning force of the flat-pull anchor cables on both sides, thereby realizing position correction after the pipe gallery is displaced. The invention can play an anti-floating role, and can actively correct the displacement and realize correction after the pipe gallery is offset, thereby ensuring the construction and safe operation of the pipe gallery.

Description

Technical Field

[0001] The invention relates to the technical field, and in particular to an anchor-cable type corrugated steel pipe gallery anti-floating and deviation-correcting device and a construction method thereof. Background Art

[0002] The mass of the corrugated steel structure pipe corridor is much smaller than that of the traditional concrete pipe corridor, but the corrugated steel is a flexible structure and is more easily deformed. It is quite challenging to construct the corrugated steel structure pipe corridor in water-rich soft soil areas. The geological conditions in water-rich soft soil areas are complex, the soil layer has high water content, and the soil is soft. During the construction process, it is very easy for the pipe corridor to float and deform and deviate. In severe cases, it will cause engineering accidents, increase the difficulty of pipe corridor construction, and seriously affect operational safety. Traditional anti-floating and deformation control measures are passive means, such as: welding steel bars on the bottom plate to anchor them at the bottom of the foundation pit, treating poor foundation soil, and counterweighting the pipe corridor to prevent floating. These methods have the defects of great construction difficulty, high cost, low efficiency, and uncontrollable effect. In particular, for the pipe corridor that has been deformed, it is impossible to correct the position and ensure the continued safe operation of the pipe corridor. Summary of the invention

[0003] In order to solve the above problems, the present invention provides an anchor-type corrugated steel pipe gallery anti-floating and deviation-correcting device and a construction method thereof.

[0004] The technical solution adopted by the present invention is:

[0005] An anchor-cable type corrugated steel pipe gallery anti-floating and deviation correction device comprises a pipe gallery and anchor cables. The pipe gallery is arranged in a pipe gallery base trench. Each section of the pipe gallery is provided with a plurality of horizontally and obliquely arranged horizontally and obliquely arranged horizontally and obliquely arranged horizontally and obliquely to the surrounding soil slope. One end of the anchor cable is anchored in the slope soil, and the other end is tightly connected to the side plate of the pipe gallery. The horizontal anchor cables and oblique anchor cables are symmetrically arranged on both sides of the pipe gallery. The vertical component forces of the oblique anchor cables on both sides limit the vertical displacement of the pipe gallery downward, thereby playing an anti-floating role. The tensioning force of the horizontal anchor cables on both sides is adjusted to make the pipe gallery move left and right, thereby realizing the position correction after the displacement of the pipe gallery.

[0006] Furthermore, the anchoring section of the anchor cable is fixed in the bearing layer of the slope soil, and the free end of the tensioning section is fastened to the side plate of the pipe gallery through a threaded rod, a torque nut and a pad.

[0007] Furthermore, a pull ring is provided at one end of the threaded rod, and the end of the anchor cable is connected to the pull ring through a cable knot.

[0008] Furthermore, the threaded rod passes through the pipe gallery side plate and the backing plate to connect the torque nut, and the backing plate rests on two wave crests of the pipe gallery side plate.

[0009] Furthermore, a sealing sleeve is provided at the trough position between two wave crests of the pipe gallery side plate, the sealing sleeve is filled with sealing grease, and the threaded rod passes through the pipe gallery side plate, the sealing sleeve and the gasket to connect the torque nut.

[0010] The construction method of the above-mentioned pull-rod type corrugated steel pipe gallery anti-floating and deviation-correcting device comprises the following steps:

[0011] (1) Laying out the lines and excavating the trench for the pipe gallery, hoisting the corrugated steel plates and splicing them to prepare the pipe gallery, and connecting the threaded rods at the tensioning section of each anchor cable;

[0012] (2) Locate the anchor cable holes of each section of the tunnel on the slope of the tunnel foundation trench, drill holes, insert anchor cables and inject grout, and wait for them to solidify in the bearing layer of the slope soil to form an anchor section;

[0013] (3) Pass the threaded rod end of each anchor cable through the corresponding pipe gallery side plate, put on the sealing sleeve, inject sealing grease, then pass through the pad, and tighten the torque nut. At this time, the anchor cable is not subject to tension;

[0014] (4) Tighten the torque nuts on both sides of the upper end of the pipe gallery side plate simultaneously to initially straighten the horizontal anchor cable;

[0015] (5) Tighten the torque nuts on both sides of the lower end of the side plate of the pipe gallery simultaneously to tension and fix the pipe gallery with the inclined anchor cables;

[0016] (6) Backfill the soil in layers, continuously measure the position deviation of the pipe gallery during the backfilling process, and adjust the tightening force of the torque nut in time;

[0017] (7) When the pipe gallery is offset, locate the offset pipe joint, adjust the tightening force of the torque nuts on both sides of the lower end of the pipe gallery side plate, and move the pipe joint in the opposite direction of the offset to correct the deviation;

[0018] (8) Continue backfilling and measuring the deviation of the tunnel. If deviation occurs again, repeat step 7 until the tunnel is backfilled.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention arranges horizontal anchor cables and oblique anchor cables. The vertical component of the oblique anchor cables limits the vertical displacement of the pipe gallery downward, thereby playing an anti-floating role. The tension of the horizontal anchor cables on both sides is adjusted to move the pipe gallery left and right, thereby realizing position correction after the displacement of the pipe gallery.

[0021] 2. The device of the present invention has a simple structure, convenient adjustment, simple construction, low cost, high efficiency and controllable quality; and can correct the position of a deformed pipe gallery to ensure the continued safe operation of the pipe gallery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of the anti-floating and deviation-correcting device of the anchor-type corrugated steel pipe gallery.

[0023] Figure 2 Schematic diagram of the effect of laying out the longitudinal anchor cables along the corrugated steel pipe gallery section.

[0024] Figure 3 Schematic diagram of the connection structure between the side panels of the pipe gallery and the anchor cables.

[0025] Figure 4 for Figure 3 Schematic diagram of the structure of section A in the middle.

[0026] Figure 5 for Figure 3 Schematic diagram of the cross-section structure of middle B. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and a preferred implementation manner.

[0028] Example 1

[0029] See also Figure 1-Figure 5 This embodiment provides an anchor-cable type corrugated steel pipe gallery anti-floating and deviation correction device, including a pipe gallery 1 and anchor cables. The pipe gallery 1 is arranged in the pipe gallery base trench. Each section of the pipe gallery is horizontally and obliquely arranged with a number of horizontal anchor cables 9 and oblique anchor cables 4 to the surrounding soil slope 3. One end of the anchor cable is anchored in the slope soil 3, and the other end is tightly connected to the pipe gallery side plate 5. The horizontal anchor cables 9 and oblique anchor cables 4 are symmetrically arranged in groups of two on both sides of the pipe gallery 1. The vertical component force of the oblique anchor cables 4 on both sides limits the vertical displacement of the pipe gallery downward, playing an anti-floating role; by adjusting the tension of the horizontal anchor cables 9 on both sides, the pipe gallery is moved left and right, and the position deviation correction after the displacement of the pipe gallery is realized.

[0030] In this embodiment, the cross-sectional shape of the pipe gallery 1 is a horseshoe shape. In other embodiments, it may also be a closed cross-sectional shape such as a circle, a vertical ellipse or a dustpan shape. In this embodiment, 8 groups of 16 horizontal anchor cables 9 and 8 groups of 16 oblique anchor cables 4 are arranged in each pipe gallery. In other embodiments, the number of horizontal anchor cables and oblique anchor cables arranged in each pipe gallery is selected according to the structural characteristics of the pipe gallery.

[0031] During specific implementation, the anchoring section of the anchor cable is fixed in the bearing layer of the slope soil 3, and the anchoring is more firmly and not easy to fall off; the free end of the tensioning section of the anchor cable is fastened to the side plate 5 of the corridor through the threaded rod 6, the torque nut 7 and the pad 8, which is convenient for adjusting the tensioning force of the anchor cable.

[0032] A pull ring 14 is provided at one end of the threaded rod 6, so that the anchor cable end 12 passes through the pull ring 14 to form a cable knot 13, that is, the anchor cable and the threaded rod are connected through the cable knot and the pull ring, and the connection structure is more firm and the construction is simple.

[0033] Holes are punched at the troughs of the upper and lower ends of the pipe gallery side panel 5, and a sealing sleeve 10 is connected to the opening position. The sealing sleeve 10 is a cylinder with open ends, and a sealing grease 11 is filled in the inner tank; the threaded end of the threaded rod 6 passes through the hole on the pipe gallery side panel 5, the sealing sleeve 10, the gasket 8, and the loose gasket connecting torque nut 7. One end of the sealing sleeve 10 abuts against the pipe gallery side panel 5, and the other end abuts against the gasket 8. The gasket 8 abuts on the two peaks of the pipe gallery side panel 5.

[0034] The sealing sleeve 10 is provided so that the threaded rod 6 can be partially buried in the grease and can move flexibly under the lubrication of the grease.

[0035] The backing plate 8 can increase the force-bearing area of ​​the side plate of the pipe gallery, and improve the anti-floating and deviation-correcting effects; and the backing plate 8 also serves as the end cover of the sealing sleeve 10, playing the role of sealing the sealing grease 11.

[0036] Example 2

[0037] This embodiment provides a construction method of a pull-rod type corrugated steel pipe gallery anti-floating and deviation-correcting device as described in Embodiment 1, comprising the following steps:

[0038] (1) Laying out and excavating the tunnel foundation trench, hoisting and splicing corrugated steel plates to prepare the tunnel 1; connecting threaded rods 6 to the tensioning section of each anchor cable;

[0039] (2) Locate the anchor cable holes of each section of the tunnel on the slope of the tunnel foundation trench, drill holes, insert anchor cables, and inject grout until they solidify in the bearing layer of the slope soil 3 to form an anchoring section;

[0040] (3) The threaded rod end of each anchor cable is passed through the corresponding pipe gallery side plate 5, and the sealing sleeve 10 is put on. The sealing grease 11 is injected, and then the threaded rod end of each anchor cable is passed through the backing plate 8 and the gasket is loosened. Then the torque nut 7 is screwed on. At this time, the anchor cable is not subjected to tension;

[0041] (4) Tighten the torque nuts 7 on both sides of the upper end of the pipe gallery side plate simultaneously to initially straighten the horizontal anchor cable 9;

[0042] (5) Tighten the torque nuts 7 on both sides of the lower end of the side plate of the pipe gallery simultaneously, so that the inclined anchor cable 4 tensions and fixes the pipe gallery 1;

[0043] (6) Backfill the backfill soil 2 in layers, continuously measure the position deviation of the pipe gallery during the backfilling process, and adjust the tightening force of the torque nut 7 in time;

[0044] (7) When the pipe gallery is offset, locate the offset pipe joint, adjust the tightening force of the torque nuts 7 on both sides of the lower end of the pipe gallery side plate, and move the pipe joint in the opposite direction of the offset to correct the deviation;

[0045] (8) Continue backfilling and measuring the deviation of the tunnel. If deviation occurs again, repeat step (7) until the tunnel is backfilled.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications are also within the protection scope of the present invention.

Claims

1. An anchor-type corrugated steel pipe gallery anti-floating and deviation-correcting device, characterized in that: The invention comprises a pipe gallery (1) and anchor cables. The pipe gallery (1) is arranged in a pipe gallery foundation trench. Each section of the pipe gallery has a plurality of horizontally and obliquely arranged ... The anchoring section of the anchor cable is fixed in the bearing layer of the slope soil (3), and the free end of the tensioning section is fastened to the side plate (5) of the pipe gallery via a threaded rod (6), a torque nut (7) and a pad (8); The threaded rod (6) passes through the pipe gallery side plate (5) and the backing plate (8) and is connected to the torque nut (7), and the backing plate (8) is against two wave crests of the pipe gallery side plate (5); A sealing sleeve (10) is provided at a trough position between two wave crests of the pipe gallery side plate (5), and the sealing sleeve (10) is filled with sealing grease (11). The threaded rod (6) passes through the pipe gallery side plate (5), the sealing sleeve (10) and the gasket (8) to connect with the torque nut (7).

2. The anchor-cable type corrugated steel pipe gallery anti-floating and deviation-correcting device according to claim 1 is characterized in that: A pull ring (14) is provided at one end of the threaded rod (6), and the end portion (12) of the anchor cable is connected to the pull ring (14) via a cable knot (13).

3. The construction method of the anchor-type corrugated steel pipe gallery anti-floating and deviation-correcting device according to claim 1 is characterized in that: The following steps are involved: (1) Laying out and excavating the trench for the pipe gallery, hoisting and splicing corrugated steel pipes to prepare the pipe gallery (1), and connecting threaded rods (6) to the tensioning section of each anchor cable; (2) Locate the anchor cable holes of each section of the tunnel on the slope of the tunnel foundation trench, drill holes to insert the anchor cables and inject grout, and wait for them to solidify in the bearing layer of the slope soil to form an anchor section; (3) The threaded rod (6) end of each anchor cable is passed through the corresponding pipe gallery side plate (5), a sealing sleeve (10) is put on, sealing grease (11) is injected, and then the threaded rod (6) is passed through the pad (8) and the torque nut (7) is screwed on. At this time, the anchor cable is not subjected to tension; (4) Tighten the torque nuts on both sides of the upper end of the pipe gallery side plate (5) simultaneously to initially straighten the horizontal anchor cable (9); (5) Tighten the torque nuts on both sides of the lower end of the pipe gallery side plate (5) simultaneously, so that the inclined anchor cable (4) tensions and fixes the pipe gallery; (6) Backfill the backfill soil (2) in layers, continuously measure the position deviation of the pipe gallery (1) during the backfilling process, and adjust the tightening force of the torque nut in a timely manner; (7) When the pipe gallery (1) is offset, locate the offset pipe joint, adjust the tightening force of the torque nuts on both sides of the upper end of the pipe gallery side plate (5), and move the pipe joint in the opposite direction of the offset to correct the offset; (8) Continue backfilling and measuring the deviation of the tunnel (1). If deviation occurs again, repeat step 7 until the tunnel is backfilled.

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