CN210194680U

CN210194680U - Full-hall supporting structure for urban open-cut tunnel

Info

Publication number: CN210194680U
Application number: CN201920532771.3U
Authority: CN
Inventors: Yingchun Shao; 邵迎春; Lianlin Deng; 邓联林; Bo Wang; 王波; Ge Xu; 徐戈; Jiabin Cang; 藏家斌
Original assignee: Nanjing Tongli Construction Group Co Ltd
Current assignee: Nanjing Tongli Construction Group Co Ltd
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2020-03-27
Anticipated expiration: 2029-04-18

Abstract

The utility model belongs to the technical field of tunnel construction support, and discloses a full-hall supporting structure for urban open cut tunnels, which comprises a plurality of transverse rods, longitudinal rods and vertical rods, wherein the transverse rods are vertical to the side wall of the tunnel, the transverse rods are provided with a plurality of first clamping blocks and second clamping blocks, the first clamping blocks are arranged in pairs, the first clamping blocks are arranged on the top surfaces of the transverse rods, the second clamping blocks are arranged in pairs, the second clamping blocks are arranged on the side surfaces of the transverse rods, the longitudinal rods are arranged along the length direction of the tunnel, the longitudinal rods are clamped between two adjacent first clamping blocks, the longitudinal rods are provided with a plurality of first limiting strips in pairs, the two first limiting strips respectively abut against the two end surfaces of the first clamping blocks, the vertical rods are arranged along the vertical direction, the vertical rods are clamped between two adjacent second clamping blocks, the vertical rods are provided with a plurality of second limiting strips in pairs, the two second limiting strips respectively abut against the two end surfaces of, the construction time is saved, and the construction period is shortened.

Description

Full-hall supporting structure for urban open-cut tunnel

Technical Field

The utility model relates to a technical field that tunnel construction was strutted, in particular to full supporting construction for city open cut tunnel.

Background

In the construction of deep foundation pits of urban open-cut tunnels, the design of a building enclosure system mostly adopts a cast-in-place pile (or a pile in an SMW construction method), wherein the rearrangement of steel supports (support replacement for short) is an important technology. In the prior art, after the pouring of the bottom plate and the side wall of the tunnel is finished, the first reinforced concrete support is removed to carry out roof construction, and because the excavation depth of the general urban open cut tunnel is about 8-12m, for safety, a support (support change) needs to be arranged at the middle part of the height of the side wall of the tunnel in the design of the foundation pit support structure to control the deformation of the support structure. The common method of replacing the support is to install a steel pipe to replace the support to the constructed side wall (complete the support replacement) before cutting the first concrete support after the side wall and the middle wall reach the strength, so as to resist the lateral pressure from the enclosure structure.

The conventional support replacing method has the defects of large engineering quantity, high operation difficulty, increased template process difficulty, difficult dismounting and hoisting, long construction period and the like. In order to avoid the disadvantages, people begin to replace the steel pipe with a full support.

Chinese patent No. CN102505708B discloses a construction method of a tunnel in an open cut section with an oversized cross section for rail transit, which comprises the following steps: 1) processing, assembling and shaping the arch center; 2) erecting a bowl-buckle type full scaffold to form a support frame; 3) hoisting, positioning and shaping an arch frame on the support frame; 4) paving a wood balk; 5) carrying out a pre-load test; 6) installing an inner template; 7) positioning and binding the steel bars; 8) installing an outer template; 9) pouring concrete, curing and forming.

In the process of building the bowl-buckled type all-round scaffold, the toothed bowl-buckled joints at the two ends of each section of steel pipe are required to be connected with each other, and when the fastener type all-round scaffold is built, the fastener is required to be locked at the intersection of any two steel pipes, so that the operation is complex, and the construction period is not shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a full hall supporting construction for city open cut tunnel has the equipment of being convenient for and dismantles, saves the time of putting up, shortens construction period's advantage.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a full supporting construction for city open cut tunnel, includes a plurality of horizontal poles, vertical pole and montant, the horizontal pole is perpendicular with the lateral wall in tunnel, is equipped with a plurality of first fixture blocks and second fixture block on the horizontal pole, first fixture block sets up in pairs, and first fixture block is located the horizontal pole top surface, the second fixture block sets up in pairs, and the second fixture block is located the horizontal pole side, the vertical pole sets up along the length direction in tunnel, and the vertical pole card is gone into between two adjacent first fixture blocks, is equipped with a plurality of first spacing strips in pairs on the vertical pole, and two first spacing strips offset with the both ends face of first fixture block respectively, the montant sets up along vertical direction, and the montant card is gone into between two adjacent second fixture blocks, is equipped with the spacing strip of a plurality of seconds in pairs on the montant, and two spacing strips of second offset with the.

By adopting the technical scheme, the transverse rods are arranged perpendicular to the side wall of the tunnel, the longitudinal rods are arranged along the length direction of the tunnel and perpendicular to the transverse rods, the longitudinal rods are clamped between the two first clamping blocks positioned on the top surfaces of the transverse rods from top to bottom, and the two first limiting strips on the longitudinal rods are abutted against the front end surface and the rear end surface of the first clamping blocks, so that the longitudinal rods and the transverse rods cannot move along the horizontal direction; the montant is along vertical direction setting, and is perpendicular with the horizontal pole, and the card is gone into to be located between two second fixture blocks of horizontal pole side, and two spacing strips of second on the montant then offset with the upper and lower both ends face at second fixture block for montant and horizontal pole all can't remove in the vertical face at the two place, finally even as an organic whole with horizontal pole, vertical pole and montant, and the equipment and the dismantlement of being convenient for save the build-up time, shorten construction period.

Furthermore, the two ends of the cross rod and the top end of the vertical rod are respectively provided with a jacking, and the jacking is in threaded fit with the cross rod and the vertical rod.

By adopting the technical scheme, the jacking support is in threaded fit with the cross rod, and the jacking support can move along the length direction of the cross rod by screwing the cross rod when the cross rod is not moved, so that the overall length of the jacking support and the cross rod is changed, the side wall of the tunnel is better jacked, and support is formed; the top support on the top end of the vertical rod is arranged in the same way, so that the vertical rod can better support the top wall of the tunnel.

Further, still include a plurality of wooden purlin, wooden purlin is located between horizontal pole end and the tunnel lateral wall, between montant top and the tunnel roof.

Through adopting above-mentioned technical scheme, set up wooden purlin can greatly increased between horizontal pole both ends and the tunnel lateral wall, the area of contact between montant top and the tunnel roof, make the tunnel inner wall exert oneself more evenly, the condition that local fracture or collapse is difficult for appearing.

Furthermore, the tunnel structure further comprises a bamboo plywood, and the bamboo plywood is located between the top wall of the tunnel and the corresponding wood purlin.

By adopting the technical scheme, the bamboo plywood has high hardness and strong anti-bending and anti-compression capabilities, and can further disperse the pressure between the wood purlin and the tunnel top wall, so that the tunnel top wall is uniformly stressed; when the tunnel top wall is laid, the bamboo plywood can be used as a casting template component, the surface of the bamboo plywood is smooth, the lower surface of a concrete layer obtained by molding is smooth, and deburring and plastering are not needed.

Furthermore, the tunnel structure further comprises a plurality of vertical cross braces, and the planes of the vertical cross braces are perpendicular to the side walls and the top wall of the tunnel.

Through adopting above-mentioned technical scheme, pressure on the montant can effectively be shared to vertical bridging, makes supporting construction monolithic connection stable simultaneously, is difficult for warping along vertical direction.

Furthermore, the tunnel further comprises a plurality of horizontal cross braces, and the plane where the horizontal cross braces are located is parallel to the bottom surface of the tunnel.

Through adopting above-mentioned technical scheme, pressure on the horizontal cross bridging can effectively be shared, makes supporting construction monolithic connection stable simultaneously, is difficult for following the horizontal direction and warp.

Furthermore, the tunnel top wall inclined supporting device further comprises a plurality of inclined supports, wherein the inclined supports are coplanar with the vertical scissor supports, the bottom ends of the inclined supports are abutted to the bottom surface of the tunnel, and the top ends of the inclined supports are abutted to the top wall of the tunnel.

Through adopting above-mentioned technical scheme, the tunnel height is lower, uses the bracing to support the tunnel roof effectively, and builds the bracing easy operation, convenient and fast.

Further, the tunnel structure further comprises angle steel embedded in the bottom surface of the tunnel, the bottom end of the inclined strut is bolted to the angle steel, a jacking support is also arranged at the top end of the inclined strut, and the jacking support is in threaded fit with the inclined strut.

Through adopting above-mentioned technical scheme, bracing bottom and pre-buried angle steel bolt joint, the top sets up to push up to sticis in the tunnel roof after holding in the palm, utilizes frictional force can be better with it fixed, need not to set up other fasteners.

To sum up, the utility model discloses following beneficial effect has:

1. the assembly and disassembly are convenient, the construction time is saved, and the construction period is shortened;

2. the wood purlin and the bamboo plywood are arranged, so that the stress on the inner wall of the tunnel is dispersed, and the condition that the inner wall of the tunnel is cracked or collapsed is avoided;

3. the cross braces and the inclined braces are arranged, so that the overall stability of the supporting structure is enhanced.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic structural diagram of a horizontal cross brace in an embodiment;

FIG. 3 is an enlarged view at A in FIG. 1;

FIG. 4 is a schematic view of the connection among the cross bar, the vertical bar and the vertical bar in the embodiment.

In the figure, 1, a cross bar; 2. a longitudinal bar; 3. a vertical rod; 4. jacking; 5. wood purlin; 6. bamboo plywood; 7. a vertical scissor brace; 8. horizontal cross bracing; 9. bracing; 10. angle steel; 11. a first clamping block; 12. a second fixture block; 21. a first limit strip; 31. and a second limit strip.

Detailed Description

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

Example (b):

the utility model provides a full hall supporting construction for city open cut tunnel, as shown in figure 1, is including a plurality of horizontal poles 1, vertical pole 2 and the montant 3 that are used for putting up the supporting construction main part, and the equal array of three is arranged. The transverse rod 1 is perpendicular to the side wall of the tunnel, the longitudinal rod 2 is arranged along the length direction of the tunnel, and the vertical rod 3 is arranged along the vertical direction.

As shown in figure 1, two ends of the cross rod 1 are provided with internal threads, and the top support 4 is provided with external threads which are matched with each other in a threaded manner. And the top support 4 is screwed, so that the overall length of the cross rod 1 and the top support 4 can be adjusted, and the cross rod 1 can better support against the side wall of the tunnel.

As shown in fig. 1, a wood purlin 5 is arranged between the cross bar 1 and the side wall of the tunnel, the wood purlin 5 is arranged along the vertical direction, and one end of each cross bar 1 on the same cross section of the tunnel is matched with the same wood purlin 5.

As shown in fig. 1, the top end of the vertical rod 3 is also provided with a top support 4 and a wood balk 5, and the top support 4 is arranged with reference to the tail end of the horizontal rod 1, connected with the vertical rod 3 and abutted against the top wall of the tunnel. The wood purlin 5 is arranged along the horizontal direction and is parallel to the cross rod 1, and the top ends of the vertical rods 3 on the same cross section of the tunnel are matched with the same wood purlin 5.

As shown in fig. 1, a layer of bamboo plywood 6 is laid between the wood purlin 5 at the top end of the vertical rod 3 and the top wall of the tunnel, so that the pressure applied to the top wall of the tunnel is further dispersed.

As shown in fig. 1, six groups of vertical cross braces 7 are arranged in sequence along the length direction of the cross bar 1. The plane where the single vertical cross brace 7 is located is perpendicular to the side wall and the top wall of the tunnel, and the six vertical cross braces 7 located on the same cross section of the tunnel are connected in sequence.

As shown in fig. 2, horizontal cross braces 8 are respectively arranged on the top layer cross bars 1 and the bottom layer cross bars 1, and the horizontal cross braces 8 are connected with the cross bars 1 and sequentially arranged along the length direction of the tunnel.

As shown in fig. 1 and 3, six groups of angle steels 10 are embedded in the bottom surface of the tunnel, wherein three groups are located at one side of the tunnel, and the other three groups are located at the other side of the tunnel and are symmetrically arranged about the central axis of the tunnel. The plane that bracing 9 and vertical bridging 7 place is parallel, and with angle steel 10 one-to-one, be equipped with six groups, its bottom and angle steel 10 bolt joint, top threaded connection have the top to hold in the palm 4, offset with the tunnel roof.

As shown in fig. 4, the top surface of the crossbar 1 is provided with a pair of first blocks 11, and the distance between the two first blocks 11 is equal to the outer diameter of the vertical bar 2. The longitudinal rod 2 is clamped between the two first clamping blocks 11 from top to bottom, and the first limiting strips 21 which are fixedly arranged on the longitudinal rod 2 in pairs respectively abut against the front end and the rear end of each first clamping block 11, so that the transverse rod 1 and the longitudinal rod 2 cannot move along the horizontal direction.

As shown in fig. 4, the side surfaces of the crossbar 1 are provided with the second blocks 12 in pairs, and the distance between the two second blocks 12 is equal to the outer diameter of the vertical rod 3. The vertical rod 3 is clamped between the two second clamping blocks 12, and the second limiting strips 31 which are fixedly arranged on the vertical rod 3 in pairs respectively abut against the upper end and the lower end of the second clamping blocks 12, so that the transverse rod 1 and the vertical rod 3 cannot move in the vertical plane where the transverse rod and the vertical rod are located.

As shown in fig. 4, the joints of the cross rods 1 and the longitudinal rods 2 and the joints of the cross rods 1 and the vertical rods 3 are bound by steel bars, so that the connection stability is enhanced.

The specific implementation process comprises the following steps:

the vertical rod 2 is clamped between the two first clamping blocks 11, and the two first clamping blocks 11 are clamped between the two first limiting strips 21. The vertical rod 3 is clamped between the two second clamping blocks 12, and the two second clamping blocks 12 are clamped between the two second limiting strips 31. The cross rod 1 is respectively connected with the longitudinal rod 2 and the vertical rod 3 to build a full-hall supporting structure.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a full hall supporting construction for city open cut tunnel, includes a plurality of horizontal poles (1), vertical pole (2) and montant (3), its characterized in that: the cross bar (1) is vertical to the side wall of the tunnel, a plurality of first clamping blocks (11) and second clamping blocks (12) are arranged on the cross bar (1), the first clamping blocks (11) are arranged in pairs, the first clamping blocks (11) are positioned on the top surface of the cross rod (1), the second clamping blocks (12) are arranged in pairs, the second clamping blocks (12) are positioned on the side surface of the cross rod (1), the longitudinal rod (2) is arranged along the length direction of the tunnel, the longitudinal rod (2) is clamped between two adjacent first clamping blocks (11), a plurality of first limiting strips (21) are arranged on the longitudinal rod (2) in pairs, the two first limiting strips (21) are respectively abutted against two end faces of the first clamping blocks (11), the vertical rod (3) is arranged along the vertical direction, the vertical rod (3) is clamped between two adjacent second clamping blocks (12), a plurality of second limiting strips (31) are arranged on the vertical rod (3) in pairs, and the two second limiting strips (31) are respectively abutted to two end faces of the second clamping blocks (12).

2. The full hall supporting structure for the urban open-cut tunnel according to claim 1, wherein: both ends of the cross rod (1) and the top end of the vertical rod (3) are respectively provided with a jacking (4), and the jacking (4) is in threaded fit with the cross rod (1) and the vertical rod (3).

3. The full hall supporting structure for the urban open-cut tunnel according to claim 2, wherein: still include a plurality of wooden purlin (5), wooden purlin (5) are located between horizontal pole (1) end and the tunnel lateral wall, between montant (3) top and the tunnel roof.

4. The full hall supporting structure for the urban open-cut tunnel according to claim 3, wherein: the tunnel is characterized by further comprising a bamboo plywood (6), wherein the bamboo plywood (6) is located between the top wall of the tunnel and the corresponding wood purlin (5).

5. The full hall supporting structure for the urban open-cut tunnel according to claim 1, wherein: the tunnel is characterized by further comprising a plurality of vertical cross braces (7), wherein the planes of the vertical cross braces (7) are perpendicular to the side walls and the top wall of the tunnel.

6. The full hall supporting structure for the urban open-cut tunnel according to claim 1, wherein: the tunnel is characterized by further comprising a plurality of horizontal cross braces (8), wherein the plane where the horizontal cross braces (8) are located is parallel to the bottom surface of the tunnel.

7. The full hall supporting structure for the urban open-cut tunnel according to claim 1, wherein: still include a plurality of bracing (9), bracing (9) and vertical bridging (7) coplane, bracing (9) bottom offsets with the tunnel bottom surface, and the top offsets with the tunnel roof.

8. The full hall supporting structure for the urban open-cut tunnel according to claim 7, wherein: the tunnel is characterized by further comprising angle steel (10) embedded in the bottom surface of the tunnel, the bottom end of the inclined strut (9) is bolted with the angle steel (10), a jacking support (4) is also arranged at the top end of the inclined strut (9), and the jacking support (4) is in threaded fit with the inclined strut (9).