CN205154191U - Tunnel preliminary bracing steel pipe concrete steelframe - Google Patents
Tunnel preliminary bracing steel pipe concrete steelframe Download PDFInfo
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- CN205154191U CN205154191U CN201521015169.0U CN201521015169U CN205154191U CN 205154191 U CN205154191 U CN 205154191U CN 201521015169 U CN201521015169 U CN 201521015169U CN 205154191 U CN205154191 U CN 205154191U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 97
- 239000010959 steel Substances 0.000 title claims abstract description 97
- 239000004567 concrete Substances 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000010412 perfusion Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 8
- 238000003466 welding Methods 0.000 abstract 1
- 238000009412 basement excavation Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
本实用新型隧道初期支护架，属地下工程施工技术领域，目的是提供一种便于运输，安装简便，结构牢固的隧道初期支护架结构。由至少两个钢管单元通过套接结构串接组成；所述钢管单元套接结构包括相邻的第一钢管单元和第二钢管单元，以及将第一钢管单元和第二钢管单元连接在一起的套接管。所述第一钢管单元和第二钢管单元的外径插入到套接管的内径中。由于采用钢管套接结构，并在套接管端口与钢管单元焊接，避免了采用工字钢或格栅钢架时接头钢板螺栓孔易错位，接头变形较大、强度不足的缺点；在钢架拼装完成后，向钢管中灌注混泥土可以进一步增加钢架强度。
The utility model relates to a tunnel primary support frame, which belongs to the technical field of underground engineering construction, and aims to provide a tunnel primary support frame structure which is convenient for transportation, easy to install and firm in structure. It is composed of at least two steel pipe units connected in series through a socket structure; the steel pipe unit socket structure includes adjacent first steel pipe units and second steel pipe units, and connecting the first steel pipe unit and the second steel pipe unit together socket pipe. The outer diameters of the first steel pipe unit and the second steel pipe unit are inserted into the inner diameter of the socket pipe. Due to the use of steel pipe socket structure and the welding of steel pipe units at the socket pipe port, it avoids the disadvantages of easy dislocation of joint steel plate bolt holes, large joint deformation and insufficient strength when I-beam or grid steel frames are used; Once completed, pouring concrete into the steel pipes further increases the strength of the steel frame.
Description
技术领域technical field
本实用新型涉及一种隧道初期支护钢架装置，适用于公路、铁路隧道开挖后对围岩的支护，尤其适用于高海拔、偏远地区的公路、铁路隧道。The utility model relates to an initial support steel frame device for tunnels, which is suitable for supporting surrounding rocks after excavation of highway and railway tunnels, and is especially suitable for highway and railway tunnels in high altitude and remote areas.
背景技术Background technique
隧道在开挖过程中，为控制围岩变形，防止隧道坍塌，开挖后必须立即进行初期支护的施工，并将其作为永久承载结构的一部分。当前隧道初期支护主要由系统锚杆、喷射混凝土、工字钢或格栅钢架等组合而成。工字钢或格栅钢架存在的问题如下：一是工字钢或格栅钢架较重，不便于目前高海拔、偏远地区隧道施工过程中的运输和拼装；二是工字钢或格栅钢架采用接头钢板、螺栓进行环向连接，受到制作精度、围岩变形等因素的影响，螺栓孔容易造成错位、变形，增加了连接的施工难度。如果螺栓连接不能满足设计要求，则钢架接头容易在受力后变形较大甚至折断，从而导致隧道坍塌，造成灾难性的后果。During the excavation process of the tunnel, in order to control the deformation of the surrounding rock and prevent the tunnel from collapsing, the construction of the initial support must be carried out immediately after the excavation, and it must be used as a part of the permanent bearing structure. At present, the initial support of tunnels is mainly composed of system anchor rods, shotcrete, I-beams or grid steel frames. The problems of I-beam or grid steel frame are as follows: First, I-beam or grid steel frame is heavy, which is not convenient for transportation and assembly during tunnel construction in high altitude and remote areas; second, I-beam or grid The grid steel frame is connected in a circular direction with joint steel plates and bolts. Affected by factors such as manufacturing accuracy and surrounding rock deformation, the bolt holes are likely to cause misalignment and deformation, which increases the difficulty of connection construction. If the bolted connection cannot meet the design requirements, the steel frame joints are likely to deform greatly or even break after being stressed, which will lead to the collapse of the tunnel and cause catastrophic consequences.
实用新型内容Utility model content
本实用新型所要解决的技术问题是提供一种由钢管套接而成的隧道初期支护钢架结构，克服了当前工字钢或格栅钢架运输拼装困难、接头易变形的缺点。The technical problem to be solved by the utility model is to provide a tunnel initial support steel frame structure formed by socketing steel pipes, which overcomes the shortcomings of the current I-beam or grid steel frame that are difficult to transport and assemble, and the joints are easily deformed.
本实用新型采用的隧道初期支护钢管混凝土钢架，由至少两个钢管单元通过套接结构串接组成；所述钢管单元套接结构包括相邻的第一钢管单元和第二钢管单元，以及将第一钢管单元和第二钢管单元连接在一起的套接管。The steel pipe concrete steel frame for the initial support of the tunnel adopted by the utility model is composed of at least two steel pipe units connected in series through a socket structure; the steel pipe unit socket structure includes adjacent first steel pipe units and second steel pipe units, and A socket connecting the first steel pipe unit and the second steel pipe unit together.
所述第一钢管单元和第二钢管单元的外径插入到套接管的内径中。The outer diameters of the first steel pipe unit and the second steel pipe unit are inserted into the inner diameter of the socket pipe.
钢管单元和套接管均采用钢管制作。Both the steel pipe unit and the sleeve pipe are made of steel pipe.
所述套接管包括套接管前端口和套接管后端口；在所述套接管前端口和套接管后端口处分别与第一钢管单元和第二钢管单元采用焊缝焊接。The sleeve pipe includes a sleeve pipe front port and a sleeve pipe rear port; the sleeve pipe front port and the sleeve pipe rear port are respectively welded with the first steel pipe unit and the second steel pipe unit.
钢管单元中灌注混凝土。Concrete is poured into the steel pipe unit.
本实用新型的有益技术效果是：由于采用钢管套接组合而成的钢架结构更加轻便，从而使得运输更加容易，安装更加方便，工人工作强度降低，施工效率大大提高；由于采用钢管套接结构，并在套接管端口与钢管单元焊接，避免了采用工字钢或格栅钢架时接头钢板螺栓孔易错位，接头变形较大、强度不足的缺点；在钢架拼装完成后，向钢管中灌注混泥土可以进一步增加钢架强度。The beneficial technical effects of the utility model are: the steel frame structure formed by the steel pipe socket connection is more portable, which makes the transportation easier, the installation more convenient, the work intensity of the workers is reduced, and the construction efficiency is greatly improved; due to the steel pipe socket structure , and welded with the steel pipe unit at the socket pipe port, avoiding the disadvantages of easy misalignment of the joint steel plate bolt holes, large joint deformation, and insufficient strength when the I-beam or grid steel frame is used; Injecting concrete can further increase the strength of the steel frame.
说明书附图Instructions attached
图1为本实用新型隧道初期支护钢管混凝土钢架结构示意图。Fig. 1 is a schematic diagram of the steel frame structure of the steel pipe concrete for the initial support of the tunnel of the utility model.
图2为本实用新型钢架套接管剖面示意图。Fig. 2 is a schematic cross-sectional view of the steel frame socket pipe of the present invention.
图中，1-套接结构，11-第一钢管单元，12-第二钢管单元，13-套接管，141-套接管前端口，142-套接管后端口,15-焊缝,16-混凝土。In the figure, 1-socket structure, 11-first steel pipe unit, 12-second steel pipe unit, 13-socket pipe, 141-sleeve pipe front port, 142-socket pipe rear port, 15-weld seam, 16-concrete .
具体实施方式detailed description
下面结合附图对本实用新型做进一步的说明。Below in conjunction with accompanying drawing, the utility model is described further.
隧道初期支护钢管混凝土钢架，如图1所示，由至少两个钢管单元通过套接结构1串接组成与隧道大小形状相匹配的拱形钢架。所述钢管单元套接结构1如图2所示，包括相邻的第一钢管单元11和第二钢管单元12，以及将第一钢管单元11和第二钢管单元12连接在一起的套接管13。如图2所示，第一钢管单元11和第二钢管单元12的外径插入到套接管13的内径，从而将第一钢管单元11和第二钢管单元12连接为整体，满足钢架的整体强度和形状要求。The initial support of the steel pipe concrete steel frame of the tunnel, as shown in Figure 1, consists of at least two steel pipe units connected in series through the socket structure 1 to form an arched steel frame matching the size and shape of the tunnel. The steel pipe unit socket structure 1 is shown in FIG. 2 , including adjacent first steel pipe unit 11 and second steel pipe unit 12 , and a socket pipe 13 connecting the first steel pipe unit 11 and the second steel pipe unit 12 together. . As shown in Figure 2, the outer diameters of the first steel pipe unit 11 and the second steel pipe unit 12 are inserted into the inner diameter of the sleeve pipe 13, so that the first steel pipe unit 11 and the second steel pipe unit 12 are connected as a whole, satisfying the integrity of the steel frame strength and shape requirements.
钢管单元和套接管采用钢管制作，其成型简单，且套接施工方便，能有效地提高施工进度，保证施工质量。The steel pipe unit and socket pipe are made of steel pipe, which is simple in forming and convenient in socket construction, which can effectively improve the construction progress and ensure the construction quality.
根据隧道的大小和形状采用不同数目的钢管单元，由套接结构1串接组成相匹配的钢架，从而使钢架拥有更高的柔韧性，避免了采用工字钢或格栅钢架时接头钢板螺栓孔易错位，接头变形较大、强度不足的缺点。According to the size and shape of the tunnel, different numbers of steel pipe units are used, and the matching steel frame is formed by connecting the socket structure 1 in series, so that the steel frame has higher flexibility and avoids the need to use I-beam or grid steel frame. The bolt holes of the joint steel plate are easy to misalign, the joint deformation is large, and the strength is insufficient.
如图2所示，所述套接管13包括套接管前端口141和套接管后端口142；为了保证钢管单元与套接管之间安装后的强度和防止套接管13位移，在所述套接管前端口141和套接管后端口142处分别与第一钢管单元11和第二钢管单元12采用焊缝15焊接。As shown in Figure 2, the socket pipe 13 includes a socket pipe front port 141 and a socket pipe rear port 142; The port 141 and the socket rear port 142 are respectively welded with the first steel pipe unit 11 and the second steel pipe unit 12 using weld seams 15 .
由于单位长度的钢管比工字钢或格栅钢架轻，因此便于运输和拼装，同时为了进一步提高钢架强度，在其组装完成后，向钢管单元中灌注混凝土。Since the steel pipe per unit length is lighter than the I-beam or grid steel frame, it is easy to transport and assemble. At the same time, in order to further improve the strength of the steel frame, concrete is poured into the steel pipe unit after the assembly is completed.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521015169.0U CN205154191U (en) | 2015-12-08 | 2015-12-08 | Tunnel preliminary bracing steel pipe concrete steelframe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521015169.0U CN205154191U (en) | 2015-12-08 | 2015-12-08 | Tunnel preliminary bracing steel pipe concrete steelframe |
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| CN205154191U true CN205154191U (en) | 2016-04-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888698A (en) * | 2016-06-12 | 2016-08-24 | 中铁二院工程集团有限责任公司 | Tunnel primary support structure with built-in steel pipe frame |
| CN107060835A (en) * | 2017-04-11 | 2017-08-18 | 山东科技大学 | A kind of underground change the outfit chamber branch hang combination unit and its construction method |
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2015
- 2015-12-08 CN CN201521015169.0U patent/CN205154191U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888698A (en) * | 2016-06-12 | 2016-08-24 | 中铁二院工程集团有限责任公司 | Tunnel primary support structure with built-in steel pipe frame |
| CN107060835A (en) * | 2017-04-11 | 2017-08-18 | 山东科技大学 | A kind of underground change the outfit chamber branch hang combination unit and its construction method |
| CN107060835B (en) * | 2017-04-11 | 2019-02-05 | 山东科技大学 | A kind of underground changing chamber support-hoisting combined device and its construction method |
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Address after: 610000 7-10 Floor, Block B, Building No. 4, 200 Tianfu Fifth Street, Chengdu High-tech Zone, Sichuan Patentee after: Sichuan Highway Planning, Survey and Design Research Institute Co., Ltd. Address before: 610041 Wuhou District, Chengdu Wuhou Temple street, No. 1, No. Patentee before: Sichuan Department of Transportation Highway Planning, Prospecting and Design Research Institute |