CN205260055U - Structure is linked to bow member that preliminary bracing control of soft rock tunnel is warp - Google Patents
Structure is linked to bow member that preliminary bracing control of soft rock tunnel is warp Download PDFInfo
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- CN205260055U CN205260055U CN201620010443.3U CN201620010443U CN205260055U CN 205260055 U CN205260055 U CN 205260055U CN 201620010443 U CN201620010443 U CN 201620010443U CN 205260055 U CN205260055 U CN 205260055U
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Abstract
The utility model provides a structure is linked to bow member that preliminary bracing control of soft rock tunnel is warp, includes the steel bow member, rather than adjacent steel bow member, I -steel, channel -section steel, its characteristic in: vertical interlinkage of I -steel be in two adjacent steel bow members between, be separated by with the equidistance along the bow member hoop, evenly distributed is at the vault of bow member, haunch and encircle foot department, the channel -section steel is vertical to be linked at two adjacent steel bow members, is in along the hoop welding the I -steel between. Fore -and -aft I -steel and channel -section steel have strengthened the antitorque ability and the overall stability of steel bow member, have improved the chain relay between the two adjacent pin steel bow members, can the effectual situation of controlling preliminary bracing surrouding rock deformation in soft rock tunnel preliminary bracing.
Description
Technical field
Soft rock tunnel preliminary bracing steel arch frame connecting structure, is specifically related to the bow member link structure that a kind of soft rock tunnel preliminary bracing control is out of shape.
Background technology
Along with China's traffic develops rapidly, increasing highway, railway tunnel drop into builds, and China is the country of a complicated geology, unavoidably runs into soft rock large deformation geological province and build tunnel in work progress. Soft rock has the characteristic that is different from general geology, it is mainly: low elasticity high-ductility, mechanical strength is low, deformation performance is strong, and it is fast generally to have deformation velocity, the feature that deformation time is long, these characteristics cause the low from ability to bear of soft rock tunnel country rock, deflection is large, therefore adopts the bow member of suitable control distortion for ensureing that soft rock tunnel preliminary bracing control distortion has great importance.
Soft Rock Tunnel Excavation, when tunnel longitudinally passes the rock stratum of different mechanical properties, particularly differ greatly at the foundation bearing capacity such as tomography, crushed zone paragraph time, due to the difference of different section preliminary bracing opposing inhomogeneous deformation ability, can cause the longitudinal differential settlement in tunnel, thereby cause that vertical bending moment produces crack.
The traditional dowel of ordinary crossing is with the spiral of Φ 22 or Φ 25, two adjacent Pin steel arch framves firmly to be welded, circumferential distance is generally 1m, although dowel can provide certain restraining force in this case, but at soft rock large deformation tunnel diameter Φ 22 or the longitudinal link muscle of Φ 25, the restraining force of adjacent two Pin steel arch framves is seemed to very weak, steel arch frame resistance to torsion can not be brought into play maximum effect. Only to meet longitudinally pouring in of tunnel tunnel face front upper place country rock by existing resistance to torsion, but in the time that the channel-section steel with No. 14 I-steel and 14a replaces diameter of phi 22 or Φ 25 reinforcing bar, not only increase the effective area of welding, and improved the overall resistance to torsion of preliminary bracing kind steel arch frame simultaneously, thereby strengthen the stability of steel arch frame, guarantee the safety of preliminary bracing, effectively controlled the situation of soft rock tunnel preliminary bracing steel arch frame distortion.
Summary of the invention
The utility model is to provide a kind of bow member link structure of soft rock tunnel preliminary bracing control distortion, object is change soft rock tunnel preliminary bracing steel arch frame dowel stressed on the weak side, hold yielding situation, improve the torsional property of steel arch frame, thereby strengthen the restraining force of preliminary bracing to surrouding rock deformation, improve the security of soft rock tunnel supporting and the stability of bow member link structure.
It is as follows that the utility model solves the technical scheme that its technical problem adopts:
A bow member link structure for soft rock tunnel preliminary bracing control distortion, the steel arch frame that comprise steel arch frame, is adjacent, I-steel, longitudinally links channel-section steel. Described I-steel is longitudinally linked between two described adjacent steel bow members, is separated by with equidistant along steel arch frame hoop, is evenly distributed on vault, haunch and arch springing place. Described channel-section steel is longitudinally linked at two adjacent steel arch framves, is welded between described I-steel;
As preferably, described I-steel is No. 14 I-steel, and described channel-section steel is 14a channel-section steel;
Further, described I-steel is separated by equal distance link between described two adjacent steel arch framves;
Further, described channel-section steel is separated by equal range distribution between described I-steel, is linked between two described adjacent steel bow members;
Further, described I-steel is to be bolted to be linked between described two adjacent steel bow members;
Further, described channel-section steel is to be linked between described two adjacent steel bow members by the mode of built-up welding;
Technical advantage of the present utility model is: the utility model provides a kind of bow member link structure of soft rock tunnel preliminary bracing control distortion, longitudinally be linked between two adjacent steel arch framves by I-steel, channel-section steel, longitudinal I-steel and channel-section steel have strengthened anti-twisting property and the resistance to overturning of steel arch frame, improve the linking power between adjacent two Pin steel arch framves, in soft rock tunnel preliminary bracing, can effectively control the situation of preliminary bracing surrouding rock deformation.
Brief description of the drawings
Fig. 1 is three-dimensional structure schematic diagram of the present utility model;
Fig. 2 is the utility model structural representation;
Reference numeral: 1-steel arch frame, 2-adjacent steel arch frame, 3-I-steel, 4-channel-section steel.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is further explained and explanation.
As shown in Figure 1, the utility model discloses the bow member link structure of a kind of soft rock tunnel preliminary bracing control distortion, comprise 1-steel arch frame, 2-be adjacent steel arch frame, 3-I-steel, 4-channel-section steel. It is characterized in that: described I-steel (3) is longitudinally linked between described two adjacent steel bow members (1), (2), is separated by with equidistant along steel arch frame (1), (2) hoop, is evenly distributed on vault, haunch and arch springing place; Described channel-section steel (4) is longitudinally linked at two adjacent steel arch frame (1), (2), is welded between described I-steel 3.
As shown in Figure 1, described I-steel (3) is No. 14 I-steel, and described channel-section steel (4) is 14a channel-section steel;
As shown in Figure 2, described I-steel (3) is separated by equal distance join between described steel arch frame (1), (2);
As shown in Figure 2, described channel-section steel (4) is separated by equal range distribution between described I-steel (3), is linked between described steel arch frame (1), (2);
Described I-steel (3) is to be bolted to be linked between described steel arch frame (1), (2);
Described channel-section steel (4) is to be linked between described steel arch frame (1), (2) by the mode of built-up welding.
Claims (6)
1. the bow member link structure of a soft rock tunnel preliminary bracing control distortion, comprise steel arch frame (1), be adjacent steel arch frame (2), I-steel (3), channel-section steel (4), it is characterized in that: described I-steel (3) is longitudinally linked between described two adjacent steel bow members (1,2), be separated by with equidistant along steel arch frame (1,2) hoop, be evenly distributed on vault, haunch and arch springing place; Described channel-section steel 4 is longitudinally linked at two adjacent steel arch framves (1,2), is welded between described I-steel (3).
2. the bow member link structure of soft rock tunnel preliminary bracing control distortion according to claim 1, is characterized in that: described I-steel (3) is No. 14 I-steel, and described channel-section steel (4) is 14a channel-section steel.
3. the bow member link structure of soft rock tunnel preliminary bracing control distortion according to claim 1, is characterized in that: described I-steel (3) is separated by equal distance link between described steel arch frame (1).
4. the bow member link structure of soft rock tunnel preliminary bracing control distortion according to claim 1, it is characterized in that: described channel-section steel (4) is separated by equal range distribution between described I-steel (3), be linked between described steel arch frame (1,2).
5. the bow member link structure of soft rock tunnel preliminary bracing control distortion according to claim 3, is characterized in that: described I-steel (3) is to be bolted to be linked between described steel arch frame (1,2).
6. the bow member link structure of soft rock tunnel preliminary bracing control distortion according to claim 4, is characterized in that: described channel-section steel (4) is to be linked between described steel arch frame (1,2) by the mode of built-up welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620010443.3U CN205260055U (en) | 2016-01-06 | 2016-01-06 | Structure is linked to bow member that preliminary bracing control of soft rock tunnel is warp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620010443.3U CN205260055U (en) | 2016-01-06 | 2016-01-06 | Structure is linked to bow member that preliminary bracing control of soft rock tunnel is warp |
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| Publication Number | Publication Date |
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| CN205260055U true CN205260055U (en) | 2016-05-25 |
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| CN201620010443.3U Active CN205260055U (en) | 2016-01-06 | 2016-01-06 | Structure is linked to bow member that preliminary bracing control of soft rock tunnel is warp |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968687A (en) * | 2017-04-01 | 2017-07-21 | 湖南科技大学 | The closed annulus yield supporting device of half-edge coal seam stope drift active workings and method for protecting support |
| CN107780951A (en) * | 2017-11-01 | 2018-03-09 | 中交第公路勘察设计研究院有限公司 | High ground stress soft rock stress large deformation preliminary bracing system |
| CN111706368A (en) * | 2020-06-30 | 2020-09-25 | 中铁二院工程集团有限责任公司 | Tunnel inner section steel frame longitudinal connection structure and construction method |
| CN114645722A (en) * | 2022-03-31 | 2022-06-21 | 成都理工大学 | Combined type buffering energy-absorbing tunnel lets presses and struts system |
-
2016
- 2016-01-06 CN CN201620010443.3U patent/CN205260055U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968687A (en) * | 2017-04-01 | 2017-07-21 | 湖南科技大学 | The closed annulus yield supporting device of half-edge coal seam stope drift active workings and method for protecting support |
| CN107780951A (en) * | 2017-11-01 | 2018-03-09 | 中交第公路勘察设计研究院有限公司 | High ground stress soft rock stress large deformation preliminary bracing system |
| CN107780951B (en) * | 2017-11-01 | 2024-03-01 | 中交第一公路勘察设计研究院有限公司 | High-ground-stress soft rock large-deformation primary support system |
| CN111706368A (en) * | 2020-06-30 | 2020-09-25 | 中铁二院工程集团有限责任公司 | Tunnel inner section steel frame longitudinal connection structure and construction method |
| CN114645722A (en) * | 2022-03-31 | 2022-06-21 | 成都理工大学 | Combined type buffering energy-absorbing tunnel lets presses and struts system |
| CN114645722B (en) * | 2022-03-31 | 2024-01-26 | 成都理工大学 | Combined type buffering energy-absorbing tunnel lets presses support system |
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