CN111156035A - Template supporting method and template supporting structure for tunnel secondary lining - Google Patents
Template supporting method and template supporting structure for tunnel secondary lining Download PDFInfo
- Publication number
- CN111156035A CN111156035A CN202010163165.6A CN202010163165A CN111156035A CN 111156035 A CN111156035 A CN 111156035A CN 202010163165 A CN202010163165 A CN 202010163165A CN 111156035 A CN111156035 A CN 111156035A
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- China
- Prior art keywords
- template
- formwork
- support
- supporting
- tunnel
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
Abstract
The invention is suitable for the technical field of tunnel construction, and particularly relates to a template supporting method for a tunnel secondary lining. According to the template supporting method for the tunnel secondary lining, provided by the embodiment of the invention, when the template is erected, the temporary support is not removed, one end of the template supporting structure is connected with the temporary support by taking the temporary support as a supporting point, and the other end of the template supporting structure is connected with the template, so that the template can be stably supported. The method is simple to operate and stable in supporting, the use of the supporting frames is greatly reduced, the construction cost is reduced, and the construction speed is improved.
Description
Technical Field
The invention belongs to the technical field of tunnel construction, and particularly relates to a template supporting method and a template supporting structure for a tunnel secondary lining.
Background
The secondary lining is a molded concrete or reinforced concrete lining applied on the inner side of the primary support in tunnel engineering construction, and forms a composite lining together with the primary support.
In the existing second lining construction process, all temporary supports are generally dismantled first, and then the second lining is hoisted by using a full-hall scaffold; the template hoisting adopts a pull rod to connect the main edge, the main edge is connected with an adjusting and positioning screw rod of the inner die carrier, the adjusting screw rod, the steel upright post, the cross beam and the inclined strut form an integral component, all the templates are connected with the die carrier into a whole, and the templates move integrally through the die carrier.
However, for a large-span tunnel with multiple guide holes, the erection of the templates through supporting is difficult, and the usage amount of the supporting frames is large, so that the erection speed of the tunnel secondary lining template is slow.
Disclosure of Invention
The embodiment of the invention aims to provide a template supporting method for a tunnel secondary lining, and aims to solve the problems that the supporting frame is large in usage amount and slow in erection in the process of erecting a template with the secondary lining.
The embodiment of the invention is realized in such a way that the template supporting method of the tunnel secondary lining is characterized in that one end of a template supporting structure for providing supporting force for a template is connected with the template, the other end of the template supporting structure is fixedly connected with a temporary support, and the temporary support is utilized to provide supporting force for the template according to the condition of on-site temporary support.
Preferably, the formworks symmetrical about the plane of symmetry of the tunnel section are supported synchronously.
Preferably, when two or more than two vertical temporary supports are arranged in the tunnel and the temporary supports close to the template are not enough to provide the supporting force required by the template, the template supporting structure is erected between the vertical temporary supports.
Preferably, when the tunnel is provided with two or more than two vertical temporary supports and the arch formwork is supported by the formwork support structure, the transverse temporary support fixed connection between one end of the formwork support structure far away from the formwork and the vertical temporary support is adopted.
Another object of the present invention is to provide a formwork support structure, which includes a balance assembly for balancing the formwork and the temporary support against force, and a support assembly for providing a support force to the balance assembly by using the temporary support.
Preferably, the balance assembly comprises at least three first balance members and at least two second balance members, and the first balance members and the second balance members are respectively used for balancing the stress of the template along the direction of the tunnel axis and the stress of the template perpendicular to the direction of the tunnel axis.
Preferably, the first balance piece is a hollow steel pipe, and the hollow steel pipe is arranged along the axis of the tunnel and fixedly connected with the template.
Preferably, the second balance assembly is an I-steel, the I-steel is arranged along the direction perpendicular to the axis of the tunnel, one side of the I-steel is fixedly connected with the support assembly, and the other side of the I-steel is fixedly connected with the first balance member.
Preferably, the supporting component is perpendicular to the template, and both ends of the supporting component are fixedly connected with the second balance piece.
Preferably, the support assembly is connected to the second balance member by a detachable connection.
According to the template supporting method for the tunnel secondary lining, provided by the embodiment of the invention, when the template is erected, the temporary support is not removed, one end of the template supporting structure is connected with the temporary support by taking the temporary support as a supporting point, and the other end of the template supporting structure is connected with the template, so that the template can be stably supported. The method is simple to operate and stable in supporting, the use of the supporting frames is greatly reduced, the construction cost is reduced, and the construction speed is improved.
Drawings
FIG. 1 is a drawing of a design of a side wall form for the lowermost layer of a tunnel secondary lining;
FIG. 2 is a tunnel secondary lining arch template layout;
FIG. 3 is a cross-sectional view of FIG. 1 at location A-A;
fig. 4 is a cross-sectional view of fig. 1 at the location B-B.
In the drawings: 1. a tunnel; 2. supporting the steel pipe; 3. temporary support; 4. i-shaped steel; 5. hollow steel pipes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
The invention provides a template supporting method of a tunnel secondary lining.
In the embodiment of the invention, when the two-lining template support of the tunnel 1 is carried out, the support steel pipe 2, the I-shaped steel 4 and the hollow steel pipe 5 form the template support structure, one side of the template support structure is fixedly connected with the template, the other side of the template support structure is fixedly connected with the temporary support 3, and the support force of the template is adjusted by the support steel pipe 2.
As shown in fig. 1 and 2, as a preferred embodiment of the present invention, the formwork is synchronously supported with symmetry about the symmetry plane of the tunnel section.
In the embodiment of the invention, when the template on one side of the tunnel 1 is supported, the templates on the opposite positions on the opposite side of the tunnel 1 also need to be synchronously supported, so that the uniform stress on the two sides of the temporary support 3 is ensured, and the temporary support 3 is prevented from being damaged.
As shown in fig. 1 and 2, as a preferred embodiment of the present invention, when two or more vertical temporary supports are provided in the tunnel and the temporary supports adjacent to the formwork are insufficient to provide a supporting force required for the formwork, a formwork support structure is erected between the vertical temporary supports.
In the embodiment of the invention, as for a part of the tunnel 1, the span is large, so that two or more than two vertical temporary supports 3 are arranged in the middle, and when the temporary supports 3 are used for formwork support, the temporary supports 3 on two sides are stressed on one side and are easily damaged, so that a formwork support structure needs to be arranged between the two vertical temporary supports 3 to ensure that the two sides of the temporary supports 3 are stressed and do not deform.
As shown in fig. 1 and 2, as a preferred embodiment of the present invention, when the tunnel is provided with two or more vertical temporary supports, and the arch formwork is supported by the formwork support structure as described above, the transverse temporary support fixed connection between one end of the formwork support structure far from the formwork and the vertical temporary support is provided.
In the embodiment of the invention, as the top of the tunnel 1 is arc-shaped, in order to ensure that the stress directions of the two sides of the template are parallel, the support steel pipes 2 of the assembled plate support structure need to be arranged vertical to the template, and one side of part of the support steel pipes 2, which is far away from the template, needs to be fixed with the transverse temporary supports 3 between the vertical temporary supports 3, so as to ensure that the support steel pipes 2 can provide enough support force.
The invention also provides a template supporting structure which comprises a balance component and a supporting component, wherein the balance component is used for balancing the stress of the template and the temporary support, and the supporting component is used for providing supporting force for the balance component by utilizing the temporary support.
In the embodiment of the invention, according to the two-lining design structure of the tunnel 1, the formworks are laid at the pouring position, and the adjacent formworks are connected through the buckles and the bolts. Preferably, the supporting component can be for supporting steel pipe 2, and 2 both ends of support steel pipe all are connected with balanced subassembly, support the balanced subassembly of 2 both sides of steel pipe respectively with template and 3 fixed connection of interim support. The supporting assembly is used for providing enough supporting force for the balance assemblies on the two sides in the pouring process so as to prevent the template from being deformed due to the compression of one side; the balance assembly is used for dispersing the supporting force provided by the supporting assembly, and the template or the temporary support 3 is prevented from being damaged or deformed due to overlarge local pressure.
As shown in fig. 3 and 4, as a preferred embodiment of the present invention, the balance assembly includes at least three first balance members and at least two second balance members for force-balancing the formwork in the direction of the tunnel axis and force-balancing the formwork in the direction perpendicular to the tunnel axis, respectively.
In the embodiment of the invention, the balance assembly comprises at least three first balance parts and at least two second balance parts, wherein two first balance parts and one second balance part are arranged on one side of the template, one first balance part and one second balance part are arranged on one side of the temporary support 3, and the support steel pipe 2 is arranged between the second balance parts.
As shown in fig. 3 and 4, as a preferred embodiment of the present invention, the first balance member is a hollow steel pipe which is disposed along the axis of the tunnel and fixedly connected to the formwork.
In the embodiment of the invention, the first balance member is preferably a hollow steel pipe 5, and the hollow steel pipe 5 has good supporting capability on one hand, and can reduce the weight of the whole supporting system and reduce the physical consumption of workers on the other hand. Hollow steel pipe 5 sets up along 1 axis in tunnel for the template can evenly be atred along 1 axis in tunnel, avoids warping.
As shown in fig. 3 and 4, as a preferred embodiment of the present invention, the second balance member is an i-beam, which is disposed along a direction perpendicular to the axis of the tunnel, and has one side fixedly connected to the support member and the other side fixedly connected to the first balance member.
In the embodiment of the invention, the second balance component is the I-steel 4, the I-steel 4 has good deformation resistance, and local deformation is not easy to generate when the support steel pipe 2 is connected; the I-shaped steel 4 is fixedly connected with the template along the axial direction of the tunnel 1, so that the template can be uniformly stressed along the axial direction of the tunnel 1.
As shown in fig. 3 and 4, as a preferred embodiment of the present invention, the supporting member is disposed perpendicular to the formwork and both ends thereof are fixedly connected to the second balancing member.
In the embodiment of the invention, when the support steel pipe 2 is connected with the I-shaped steel 4 on the side of the template, the support steel pipe 2 is always ensured to be vertical to the template, so that the pressure direction of the I-shaped steel 4 on the side of the template and the hollow steel pipe 5 on the template is ensured to be vertical to the template, and the template is prevented from deforming.
As shown in fig. 3 and 4, as a preferred embodiment of the present invention, the support assembly is connected with the second balance member by a detachable connection.
In the embodiment of the invention, the support steel pipe 2 and the I-shaped steel 4 can be connected through clamping, so that the installation and the disassembly are convenient, the construction time is saved, and the construction efficiency is improved.
In the embodiment of the invention, two ends of the supporting steel pipe 2 can be provided with reverse threads, and bolts matched with the corresponding I-shaped steel 4 in the direction are arranged on the corresponding I-shaped steel. The support steel pipe 2 can be connected with the I-shaped steel 4 through threads, and the support force of the template can be adjusted by rotating the support steel pipe 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A template supporting method for a tunnel secondary lining is characterized in that one end of a template supporting structure for providing supporting force for a template is connected with the template, the other end of the template supporting structure is fixedly connected with a temporary support, and the temporary support is used for providing supporting force for the template.
2. The method of claim 1, wherein the templates are supported synchronously with symmetry about the symmetry plane of the tunnel cross section.
3. The method of claim 1, wherein when two or more vertical temporary supports are provided in the tunnel and the temporary supports adjacent to the formwork are insufficient to provide the required support force for the formwork, a formwork support structure is erected between the vertical temporary supports.
4. The method of claim 1, wherein when the tunnel is provided with two or more vertical temporary supports, and the arch formwork is supported by the formwork support structure, the formwork support structure is fixedly connected to the transverse temporary support between the end of the formwork remote from the formwork and the vertical temporary support.
5. The template supporting structure is characterized by comprising a balance component and a supporting component, wherein the balance component is used for balancing a template and temporarily supporting stress, and the supporting component is used for providing supporting force for the balance component by using temporary support.
6. A formwork support structure as claimed in claim 5, wherein the bracing assembly comprises at least three first bracing members and at least two second bracing members, the first bracing members and the second bracing members being adapted to provide force-bracing of the formwork in the direction of the tunnel axis and in the direction perpendicular to the tunnel axis respectively.
7. A formwork support structure as claimed in claim 6, wherein the first counterbalance is a hollow steel tube disposed along the tunnel axis and fixedly connected to the formwork.
8. A formwork support structure as claimed in claim 6, wherein the second counterweight component is an I-beam disposed perpendicular to the tunnel axis and having one side fixedly connected to the support component and the other side fixedly connected to the first counterweight.
9. The formwork support structure as in claim 6, wherein the support member is disposed perpendicular to the formwork and has two ends fixedly connected to the second balance member.
10. A formwork support structure as claimed in claim 6, wherein the support assembly is connected to the second counterweight by a releasable connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010163165.6A CN111156035A (en) | 2020-03-10 | 2020-03-10 | Template supporting method and template supporting structure for tunnel secondary lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010163165.6A CN111156035A (en) | 2020-03-10 | 2020-03-10 | Template supporting method and template supporting structure for tunnel secondary lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111156035A true CN111156035A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010163165.6A Pending CN111156035A (en) | 2020-03-10 | 2020-03-10 | Template supporting method and template supporting structure for tunnel secondary lining |
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| CN103470272A (en) * | 2013-10-11 | 2013-12-25 | 北京住总集团有限责任公司 | Trolley for concrete construction on multiple sections by employing mining method and construction method thereof |
| CN105452580A (en) * | 2013-07-10 | 2016-03-30 | 保利科技股份有限公司 | Formwork panel for concreting formworks |
| CN205936644U (en) * | 2016-08-12 | 2017-02-08 | 中铁二十局集团第四工程有限公司 | Tunnel lining construction structure based on two side wall drift methods |
| CN106437725A (en) * | 2016-10-31 | 2017-02-22 | 北京市政建设集团有限责任公司 | Air flue underground excavation section structural construction method |
| KR20170051311A (en) * | 2016-10-27 | 2017-05-11 | 주식회사 한라 | arch tunnel construction method using divided type lining form |
| CN107218064A (en) * | 2017-07-19 | 2017-09-29 | 北京建工土木工程有限公司 | A kind of large cross-section tunnel changes support and two lining construction methods |
| CN107938704A (en) * | 2017-12-21 | 2018-04-20 | 浙江兴土桥梁专用装备制造有限公司 | Plate device and application method for piping lane construction |
| CN108222066A (en) * | 2018-02-12 | 2018-06-29 | 武汉市市政建设集团有限公司 | A kind of combined steel formwork support system and its construction method |
| CN108915725A (en) * | 2018-06-12 | 2018-11-30 | 中铁二十局集团轨道交通工程有限公司 | A kind of small template lining construction method in double -side approach tunnel |
| CN109372262A (en) * | 2018-11-23 | 2019-02-22 | 中国三冶集团有限公司 | A kind of basement formwork support structure and construction method |
| CN109653770A (en) * | 2018-12-24 | 2019-04-19 | 中铁十八局集团有限公司 | A kind of middle board construction method carried out using original temporary support |
| CN110863841A (en) * | 2019-11-29 | 2020-03-06 | 中交第二航务工程局有限公司 | Two-lining three-step construction method for large-span shallow-buried underground excavation tunnel |
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2020
- 2020-03-10 CN CN202010163165.6A patent/CN111156035A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203035204U (en) * | 2012-12-28 | 2013-07-03 | 成都中铁隆工程集团有限公司 | Large-section tunnel second lining grouping formwork trolley |
| CN105452580A (en) * | 2013-07-10 | 2016-03-30 | 保利科技股份有限公司 | Formwork panel for concreting formworks |
| CN103470272A (en) * | 2013-10-11 | 2013-12-25 | 北京住总集团有限责任公司 | Trolley for concrete construction on multiple sections by employing mining method and construction method thereof |
| CN205936644U (en) * | 2016-08-12 | 2017-02-08 | 中铁二十局集团第四工程有限公司 | Tunnel lining construction structure based on two side wall drift methods |
| KR20170051311A (en) * | 2016-10-27 | 2017-05-11 | 주식회사 한라 | arch tunnel construction method using divided type lining form |
| CN106437725A (en) * | 2016-10-31 | 2017-02-22 | 北京市政建设集团有限责任公司 | Air flue underground excavation section structural construction method |
| CN107218064A (en) * | 2017-07-19 | 2017-09-29 | 北京建工土木工程有限公司 | A kind of large cross-section tunnel changes support and two lining construction methods |
| CN107938704A (en) * | 2017-12-21 | 2018-04-20 | 浙江兴土桥梁专用装备制造有限公司 | Plate device and application method for piping lane construction |
| CN108222066A (en) * | 2018-02-12 | 2018-06-29 | 武汉市市政建设集团有限公司 | A kind of combined steel formwork support system and its construction method |
| CN108915725A (en) * | 2018-06-12 | 2018-11-30 | 中铁二十局集团轨道交通工程有限公司 | A kind of small template lining construction method in double -side approach tunnel |
| CN109372262A (en) * | 2018-11-23 | 2019-02-22 | 中国三冶集团有限公司 | A kind of basement formwork support structure and construction method |
| CN109653770A (en) * | 2018-12-24 | 2019-04-19 | 中铁十八局集团有限公司 | A kind of middle board construction method carried out using original temporary support |
| CN110863841A (en) * | 2019-11-29 | 2020-03-06 | 中交第二航务工程局有限公司 | Two-lining three-step construction method for large-span shallow-buried underground excavation tunnel |
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Application publication date: 20200515 |