CN210194637U

CN210194637U - Urban open cut tunnel supporting structure

Info

Publication number: CN210194637U
Application number: CN201920528664.3U
Authority: CN
Inventors: Shuren Wang; 王树人; Qin Yang; 杨钦; Zhen Han; 韩振; Longqing Xu; 徐龙清; Jia Huang; 黄佳; Minjie Tan; 谭敏捷; Jiakang Fan; 范家康
Original assignee: Nanjing Tongli Construction Group Co Ltd
Current assignee: Nanjing Tongli Construction Group Co Ltd
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2020-03-27
Anticipated expiration: 2029-04-17

Abstract

The utility model discloses a city open cut tunnel supporting construction relates to tunnel technical field, aims at solving prior art, and the fender pile easily splits, causes the unstable problem of supporting construction. Its technical scheme main points are including a fender pile, be provided with the through-hole on the fender pile and pass the pillar of through-hole, the pillar is kept away from the one end of through-hole and is inserted in soil, be provided with the H shaped steel that is located through-hole horizontal direction both sides on the fender pile, H shaped steel sets up along vertical direction, the pillar is close to the one end of through-hole and is provided with the fixed plate, the fixed plate both ends correspond continuously with one side that a fender pile was kept away from to two H shaped steel respectively. The utility model discloses the effect that improves supporting construction stability has been reached.

Description

Urban open cut tunnel supporting structure

Technical Field

The utility model belongs to the technical field of the tunnel technique and specifically relates to a city open cut tunnel supporting construction is related to.

Background

The open cut method is that a foundation pit or trench is excavated downwards from the earth surface until the elevation is designed, construction is sequentially carried out from the bottom to the top from the base, earth backfilling is carried out after the main structure of the underground engineering is completed, and finally the construction of the underground engineering is completed. The open cut construction method has the characteristics of long history and wide application.

In the foundation pit supporting engineering, the row pile anchor rod supporting is widely applied due to the strong applicability and small construction site limitation, and can provide a larger construction space for the inside of a foundation pit. During construction, pile arrangement construction is generally carried out firstly, then a foundation pit is excavated, drilling is carried out at the designed height of an anchor rod to carry out anchor rod engineering construction, and finally construction of a main body structure is carried out.

The existing Chinese patent with the publication number of CN205662920U discloses an underground prefabricated pile with anchor cable holes, which comprises a pile body, wherein the bottom of the pile body is provided with a pile tip, the top of the pile body is provided with reserved steel bars, and the pile body is provided with the anchor cable holes. After filling a rigid protective body in the anchor cable hole, driving (pressing) the pile body to a specified elevation position by adopting a static pressure or hammering mode; and taking out the rigid protective body in the anchor cable hole, drilling (digging) a hole in the rock-soil body behind the pile body to the designed depth through the anchor cable hole, placing the anchor cable, and filling grouting filler such as cement paste or chemical slurry into the anchor cable hole to enable the anchor cable to be tightly combined with the rock-soil body behind the pile body, after the strength of the anchoring body meets the requirement, installing a sleeve, welding a backing plate on the outer wall of the sleeve, and locking an anchor head after tensioning the anchor cable reaches the preset tensioning force.

The above prior art solutions have the following drawbacks: in the technical scheme, the anchor cable holes are preset in the pile body, so that the pile body is unstable in structure at the positions of the anchor cable holes and has the risk of breakage. Even if cement mortar is poured into the anchor cable hole after the anchor cable is placed, the cement mortar and the pile body are not integrally formed, once the cement mortar is unqualified in proportion, the cement mortar shrinks after being solidified, and the cement mortar does not play a role in supporting the anchor cable hole; if the cement mortar has poor volume stability, the volume expansion is not uniform after hardening, and the structural stability of the pile body is even damaged. Therefore, the structure of the pile body is unstable, and the stability of the supporting structure needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a city open cut tunnel supporting construction, it has the effect that improves supporting construction stability.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a city open cut tunnel supporting construction, includes a fender pile, be provided with the through-hole on the fender pile and pass the pillar of through-hole, the pillar is kept away from the one end of through-hole and is inserted in soil, states and is provided with the H shaped steel that is located through-hole horizontal direction both sides on the fender pile, H shaped steel sets up along vertical direction, the pillar is close to the one end of through-hole and is provided with the fixed plate, the fixed plate both ends correspond continuously with one side that two H shaped steel kept away from a fender pile respectively.

Through adopting above-mentioned technical scheme, the fender pile easily takes place to break from through-hole department, and the H shaped steel that vertical direction set up can play the guard action, transmits the pressure of external ground to the H shaped steel on, and because the good bending resistance that H shaped steel has, consequently realized the guard action to the fender pile structure, ensured supporting construction's integrality. Compared with the technology disclosed in the cited document, the fixing plate is directly connected with the H-shaped steel, so that the support pile is prevented from being damaged and fixed with the fixing plate, and the structural stability of the support pile is further improved. The pillar is connected with the support pile through the fixing plate, so that the pillar can fix the support pile with soil, and the support pile is not easy to collapse.

The utility model discloses further set up to: the pillar is the inside cavity setting, the pillar is close to the one end of through-hole and is provided with the thick liquid mouth that supplies the water mud to get into, be provided with a plurality of perforation on the circumference lateral wall of pillar.

Through adopting above-mentioned technical scheme, make through the thick liquid mouth on the pillar and can towards the interior water injection mud that pours of pillar to through the grout outlet of setting on the pillar, the grout can follow the perforation blowout after pouring into, then solidifies the soil around the pillar fixed, has improved the positional stability of pillar, thereby has improved the stable in structure of a fender pile. When grouting, cement paste can be left in the through holes through the through holes, and the through holes can be filled after solidification, so that the bending resistance of the support pile is improved.

The utility model discloses further set up to: the perforations are evenly distributed along the axial and circumferential direction of the strut.

Through adopting above-mentioned technical scheme, when grout is from the perforation blowout, evenly distributed's perforation can make the distribution of grout more even to supporting construction's overall structure stability has been improved.

The utility model discloses further set up to: the one end that the pillar is kept away from the through-hole is the circular cone type, the footpath length of pillar reduces along the direction of keeping away from the through-hole gradually.

Through adopting above-mentioned technical scheme, when inserting the pillar in soil, the tip is the hindrance that the soil can conveniently be broken through to the pillar of circular cone type to the installation of the pillar of being more convenient for.

The utility model discloses further set up to: and a reinforcing ring is arranged on the circumferential side wall of one end of the strut, which is far away from the through hole.

Through adopting above-mentioned technical scheme, the beaded finish increases the frictional force of pillar and soil, further increases the steadiness of pillar for the straight-bar is difficult to extract.

The utility model discloses further set up to: one side that H shaped steel kept away from a fender pile is provided with two screw rods that are located the fixed plate both sides, be provided with the nut with screw rod threaded connection on the screw rod, be provided with arched connecting piece on the H shaped steel, the connecting piece both ends all are provided with the mounting hole that supplies to correspond the screw rod and pass, the nut offsets with the connecting piece.

Through adopting above-mentioned technical scheme, with the both ends butt of connecting piece on a fender pile, make the screw rod pass the mounting hole simultaneously, the fixed plate is located between connecting piece and the fender pile this moment, then installs the nut on the screw rod, the rotating nut, until nut and connecting piece counterbalance to reached the effect of installation fixed plate, the pillar that links to each other with the fixed plate and then is fixed.

The utility model discloses further set up to: and a rubber pad is arranged between the fixed plate and the H-shaped steel.

Through adopting above-mentioned technical scheme, become elastic contact with the rigid contact between fixed plate and the H shaped steel, absorb the effect of fixed plate to the effect of H shaped steel and become elastic deformation to reduce the deformation of H shaped steel.

The utility model discloses further set up to: a reinforcing support block is arranged between the support pile and the H-shaped steel, the longitudinal section of the reinforcing support block is in a right-angled triangle shape, one right-angled edge of the reinforcing support block is fixed to the bottom wall of the reinforcing support block, and the other right-angled edge of the reinforcing support block is fixed to the side wall of the support pile.

Through adopting above-mentioned technical scheme, strengthen the tray and played the supporting role to H shaped steel to reach the stability that improves H shaped steel and fender pile and be connected, and then make supporting construction's stability obtain improving.

To sum up, the utility model discloses a beneficial technological effect does:

1. the effect of improving the stability of the supporting structure is achieved by arranging the H-shaped steel and the fixing plate;

2. the slurry port and the perforation are arranged, so that the effect of further improving the stability of the supporting structure is achieved;

3. through the setting of beaded finish, increase the frictional force of pillar and soil, further increase the steadiness of pillar.

Drawings

Figure 1 is an overall cross-sectional view of an embodiment of the invention;

fig. 2 is a partial schematic structural view of a support pile according to an embodiment of the present invention.

In the figure, 1, a support pile; 11. a through hole; 2. a pillar; 21. a pulp opening; 22. perforating; 23. a reinforcement ring; 3. h-shaped steel; 31. a screw; 32. a nut; 33. a connecting member; 34. mounting holes; 35. a rubber pad; 36. reinforcing the supporting block; 4. and (7) fixing the plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a city open cut tunnel supporting construction, including fender pile 1, be provided with through-hole 11 and the pillar 2 that passes through-hole 11 on the fender pile 1, the one end that through-hole 11 was kept away from to pillar 2 inserts in soil. The supporting piles 1 are provided with H-shaped steel 3 located on two sides of the through hole 11 in the horizontal direction, and the H-shaped steel 3 is arranged in the vertical direction. The fixing plate 4 is fixedly connected to one end of the pillar 2 close to the through hole 11, and two ends of the fixing plate 4 are correspondingly connected to one sides of the two H-shaped steels 3 far away from the support pile 1.

Referring to fig. 1, the pillar 2 is hollow inside, a slurry inlet 21 for supplying slurry is provided at an end of the pillar 2 adjacent to the through hole 11, and a plurality of through holes 22 are provided on a circumferential side wall of the pillar 2. The perforations 22 are evenly distributed in the axial and circumferential direction of the strut 2. The end of the pillar 2 far away from the through hole 11 is conical, and the diameter length of the pillar 2 is gradually reduced along the direction of the pillar 2 far away from the through hole 11. The bottom circumferential side wall of the pillar 2 is provided with a reinforcement ring 23. In the present embodiment, the support column 2 and the reinforcement ring 23 are both made of stainless steel, and the reinforcement ring 23 and the support column 2 are integrally formed. During grouting, cement paste can be left in the through hole 11 through the through hole 22, and the through hole 11 can be filled after solidification, so that the influence of the through hole 11 on the bending resistance of the support pile 1 is reduced.

Referring to fig. 1 and 2, two screws 31 are welded on one side of the H-shaped steel 3 away from the support pile 1, the two screws 31 are respectively located on two sides of the fixing plate 4, nuts 32 in threaded connection with the screws 31 are arranged on the screws 31, an arched connecting piece 33 is arranged on the H-shaped steel 3, and mounting holes 34 are arranged at two ends of the connecting piece 33 for the corresponding screws 31 to pass through. In this embodiment, the connecting member 33 is attached to the support pile 1 at both ends, and has a convex middle portion, and the convex portion is disposed to be flat and closely attached to the fixing plate 4. A rubber pad 35 is arranged between the fixing plate 4 and the H-shaped steel 3, so that the deformation of the stress of the H-shaped steel 3 is reduced. The two ends of the connecting piece 33 are abutted against the support pile 1, the screw 31 is made to pass through the mounting hole 34, the fixing plate 4 and the rubber pad 35 are positioned between the connecting piece 33 and the support pile 1, then the nut 32 is mounted on the screw 31, and the nut 32 is rotated until the nut 32 is abutted against the connecting piece 33. Fix fixed plate 4 on fender pile 1 through above-mentioned mode for pillar 2 can be fixed fender pile 1 with soil, makes fender pile 1 be difficult for collapsing, and is simple and convenient, is fit for extensively promoting.

Referring to fig. 1, a reinforcing support block 36 is arranged between the support pile 1 and the H-shaped steel 3, the longitudinal section of the reinforcing support block 36 is a right triangle, one right-angle side of the reinforcing support block is fixed to the bottom wall of the reinforcing support block 36, and the other right-angle side of the reinforcing support block is fixed to the side wall of the support pile 1. In this embodiment, the H-section steel 3 and the reinforcing support block 36 are integrally cast or welded together with the support pile 1 by concrete, depending on the material of the support pile 1.

The implementation principle of the embodiment is as follows: during operation, at first H shaped steel and boss welding or concrete fixation are on a fender pile 1, then run through-hole 11 with pillar 2 for in pillar 2 inserts soil, offset with H shaped steel 3 until rubber pad 35, then be close to a fender pile 1 with connecting piece 33, screw rod 31 passes corresponding mounting hole 34 simultaneously, and both ends and H shaped steel 3 up to connecting piece 33 offset, and the hunch-up part of connecting piece 33 offsets with fixed plate 4 this moment. The nut 32 is mounted on the screw 31 and the nut 32 is screwed until the nut 32 abuts against the connecting piece 33. After the fixing plate 4 is fixed, cement paste is injected into the strut 2 through the paste port 21, the cement paste is sprayed out from the through hole 22 of the strut 2, and after the cement paste is injected, the cement paste is solidified, and the installation is completed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an urban open cut tunnel supporting construction, includes fender pile (1), be provided with through-hole (11) and pillar (2) that pass through-hole (11) on fender pile (1), the one end that through-hole (11) were kept away from in inserting soil, its characterized in that in pillar (2): be provided with H shaped steel (3) that are located through-hole (11) horizontal direction both sides on fender pile (1), H shaped steel (3) set up along vertical direction, the one end that pillar (2) are close to through-hole (11) is provided with fixed plate (4), fixed plate (4) both ends correspond with one side that fender pile (1) was kept away from in two H shaped steel (3) respectively and link to each other.

2. The urban open-cut tunnel supporting structure according to claim 1, characterized in that: the support column (2) is arranged in a hollow mode, one end, close to the through hole (11), of the support column (2) is provided with a slurry inlet (21) for water slurry to enter, and a plurality of through holes (22) are formed in the circumferential side wall of the support column (2).

3. The urban open-cut tunnel supporting structure according to claim 2, characterized in that: the perforations (22) are uniformly distributed in the axial direction and the circumferential direction of the strut (2).

4. The urban open-cut tunnel supporting structure according to claim 3, characterized in that: the end, far away from through-hole (11), of pillar (2) is the circular cone type, the footpath length of pillar (2) reduces along the direction of keeping away from through-hole (11) gradually.

5. The urban open-cut tunnel supporting structure according to claim 4, characterized in that: and a reinforcing ring (23) is arranged on the circumferential side wall of one end of the strut (2) far away from the through hole (11).

6. The urban open-cut tunnel supporting structure according to claim 1, characterized in that: one side that a fender pile (1) was kept away from in H shaped steel (3) is provided with two screw rods (31) that are located fixed plate (4) both sides, be provided with nut (32) with screw rod (31) threaded connection on screw rod (31), be provided with arched connecting piece (33) on H shaped steel (3), connecting piece (33) both ends all are provided with mounting hole (34) that the confession corresponds screw rod (31) and pass, nut (32) offset with connecting piece (33).

7. The urban open-cut tunnel supporting structure according to claim 6, characterized in that: and a rubber pad (35) is arranged between the fixed plate (4) and the H-shaped steel (3).

8. The urban open-cut tunnel supporting structure according to claim 1, characterized in that: a reinforcing support block (36) is arranged between the support pile (1) and the H-shaped steel (3), the longitudinal section of the reinforcing support block (36) is in a right-angled triangle shape, one right-angled edge of the reinforcing support block is fixed with the bottom wall of the reinforcing support block (36), and the other right-angled edge of the reinforcing support block is fixed with the side wall of the support pile (1).