CN114562294A - Tunnel lets pressure to strut restriction energy-absorbing controller that hinders - Google Patents
Tunnel lets pressure to strut restriction energy-absorbing controller that hinders Download PDFInfo
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- CN114562294A CN114562294A CN202210320653.2A CN202210320653A CN114562294A CN 114562294 A CN114562294 A CN 114562294A CN 202210320653 A CN202210320653 A CN 202210320653A CN 114562294 A CN114562294 A CN 114562294A
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- steel
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- steel plate
- panel
- wavy
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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
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
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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
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/155—Laggings made of strips, slats, slabs or sheet piles
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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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/183—Supporting means for arch members, not provided for in E21D11/22
Abstract
The invention provides a tunnel yielding support resistance-limiting energy-absorbing controller which is formed by assembling a plurality of monomers, wherein adjacent monomers are connected through an upper connecting steel plate and a lower connecting steel plate, the upper connecting steel plate and the lower connecting steel plate are fixedly connected through connecting plates and bolts, a plurality of stud shear keys are arranged at the upper connecting steel plate and the lower connecting steel plate, a steel arch is placed between an upper steel panel and a lower steel panel of the controller, and a part connected with the controller is placed in a steel sleeve. The invention has the advantages that: let the pressure limit hinder energy-absorbing effect obvious, it is more reasonable to strut the system atress, and site operation is convenient, can the big deformation problem of effective control tunnel.
Description
Technical Field
The invention belongs to the field of traffic and mining tunnel supports, and particularly relates to a tunnel yielding support resistance limiting energy absorption controller.
Background
With the rapid development of traffic construction, underground space can be utilized more and more, tunnel construction can face more and more difficult problems, and tunnel surrounding rock deformation brings great hidden danger to tunnel construction safety, so that great economic safety problems are caused. The traditional strong support concept is more and more difficult to play a role under the conditions of high ground stress and weak surrounding rock. If the surrounding rock of the newly built tunnel of the blue railway Yangjia terrace is influenced by fault and fold structure, the rock stratum is steeply inclined to be upright, the tunnel construction process is influenced by soft rock and high ground stress, the lining support has serious disasters such as distortion and deformation, and the tunnel construction safety is seriously influenced. Therefore, the problem of tunnel support is solved.
The traditional supporting mode and supporting concept cannot well resist deformation generated by surrounding rocks, and the supporting mode and supporting concept related to the problem of large deformation of the tunnel need to be improved, namely a supporting system is required to not resist load transmitted by the surrounding rocks, and the supporting system also has certain capability of coordinating with the surrounding rocks to deform.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a tunnel yielding support resistance limiting energy absorption controller which can effectively solve the existing problems in tunnel soft rock deformation.
The invention adopts the following technical scheme:
the utility model provides a tunnel lets pressure strut limit and hinders energy-absorbing controller, is formed by a plurality of monomer equipment, connects through 1 group about connecting plate (last connecting plate and lower connecting plate) between the adjacent monomer, goes up connecting plate and all fixes through connecting plate bolted connection with lower connecting plate.
The single body comprises an upper wavy steel plate, a lower wavy steel plate, a middle steel plate, an upper steel plate surface and a lower steel plate surface, wherein the upper wavy steel plate is welded between the upper steel plate and the middle steel plate, the lower wavy steel plate is welded between the lower steel plate and the middle steel plate, the upper wavy steel plate, the lower wavy steel plate, the middle steel plate and the upper steel plate surface (the upper steel plate and the lower steel plate surface) form a main body structure of the single body, the middle steel plate, the two sides of the upper wavy steel plate and the lower wavy steel plate (the upper wavy steel plate and the lower wavy steel plate) are tightly attached to arrange vertical steel plates, the vertical steel plates are not fixedly connected with the vertical steel plates on the two sides, and the upper end and the lower end of each vertical steel plate are respectively welded and fixed on the upper steel plate and the lower steel plate;
a plurality of stud shear keys are arranged on the upper steel panel and the lower steel panel (the upper steel panel and the lower steel panel);
the upper side and the lower side of the single body main structure are respectively provided with a flange plate, one flange plate is fixed on the upper steel panel through a flange plate and a steel arch positioning bolt, the other flange plate is fixed on the lower steel panel through a flange plate and a steel arch positioning bolt, the flange plate is positioned in the middle of the single body main structure and is welded with the steel arch, an I-shaped steel sleeve is sleeved outside the steel arch, the steel arch is connected with the I-shaped steel sleeve through an I-shaped steel and a positioning bolt between the sleeves, and the I-shaped steel sleeve is sleeved outside the steel arch.
Furthermore, the stud shear key is better connected with the sprayed concrete, and the relative shear slippage between the contact surfaces of the steel panel and the sprayed concrete is prevented.
Furthermore, the upper connecting steel plate and the lower connecting steel plate are fixedly connected with the single bodies through 6 connecting plate bolts, two rows of connecting plate bolts are mounted on each single body, and each row is 3 bolts.
Furthermore, the upper wavy steel plate is inversely welded and fixed between the upper steel panel and the middle steel plate, and the lower wavy steel plate is sequentially welded and fixed between the middle steel plate and the lower steel panel.
Furthermore, the number of the wavy steel plates and the number of the partition steel plates are determined according to actual engineering and can be arranged in a multi-layer overlapping mode.
Further, the length and width of the steel arch are the same as those of the flange plate.
Further, bolt holes are distributed at the flanges of the steel arch frame, and each flange is provided with 2 bolt holes.
Further, the thickness of the upper and lower steel face plates (upper steel face plate and lower steel face plate) is preferably 10-15 mm. The thickness of the upper and lower wavy steel plates (upper and lower wavy steel plates) is preferably 8-12mm, and the thickness of the vertical steel plate is preferably 8-12 mm. (the type of steel plate is yield steel (e.g.: Q345B, Q235B, etc.))
Reserved connecting plate bolt holes are reserved on the upper steel panel and the lower steel panel (the upper steel panel and the lower steel panel).
The invention has the beneficial effects that:
when a load transmitted by surrounding rocks is received, the vertical steel plate is subjected to external compression deformation, the upper and lower wavy steel plates (the upper wavy steel plate and the lower wavy steel plate) and the middle steel plate are subjected to vertical compression deformation of the vertical steel plate and can bear a certain load, the load transmitted by the surrounding rocks can be continuously borne after the compression is finished, the pressure limiting and energy absorbing effects are obvious, and a rigid-flexible-rigid coupling supporting method is formed.
When the deformation of the tunnel surrounding rock is resisted, the large bearing capacity can be provided, the deformation can be coordinated with the surrounding rock, the yielding is carried out while supporting, the problem that timely strong supporting is not economical can be solved, the problem that layered supporting is not timely can be solved, and the deformation of the tunnel surrounding rock is effectively controlled.
Drawings
FIG. 1 is a schematic diagram of a spliced controller according to the present invention;
FIG. 2 is a schematic diagram of a controller unit according to the present invention;
FIG. 3 is a top view of a controller cell of the present invention;
FIG. 4 is a schematic diagram of the upper structure of the controller unit of the present invention;
FIG. 5 is a schematic view of the structure of the steel sleeve and steel arch of the controller of the present invention
FIG. 6 is a schematic diagram of the middle structure of the controller of the present invention after splicing;
fig. 7 is a schematic diagram of the structure of the middle part of the controller unit.
In the figure: 1-upper steel panel, 2-lower steel panel, 3-upper wave-shaped steel plate, 4-lower wave-shaped steel plate, 5-vertical steel plate, 6-middle partition steel plate, 7-upper connecting steel plate, 8-lower connecting steel plate, 9-connecting plate bolt, 10-stud shear key, 11-positioning bolt between I-steel and sleeve, 12-I-steel sleeve, 13-steel arch frame, 14-flange plate, 15-positioning bolt between flange plate and steel arch frame, and 16-reserved connecting plate bolt hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below clearly and completely, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the thickness of the upper steel panel and the lower steel panel (the upper steel panel 1 and the lower steel panel 2) of the tunnel yielding support resistance-limiting energy-absorbing controller is preferably 10-15 mm. The thickness of the upper and lower wavy steel plates (the upper wavy steel plate 3 and the lower wavy steel plate 4) is preferably 8-12mm, and the thickness of the vertical steel plate 5 is preferably 8-12 mm. The overall height, transverse thickness, number of the wave-shaped steel plates and number of the middle partition steel plates 6 of the tunnel yielding support resistance-limiting energy-absorbing controller can be selected according to surrounding rock pressure and yielding range in actual engineering.
As shown in fig. 1 and 6, the tunnel yielding support resistance-limiting energy-absorbing controller is formed by assembling a plurality of single bodies, adjacent single bodies are connected through 1 group of upper and lower connecting steel plates (an upper connecting steel plate 7 and a lower connecting steel plate 8), the upper connecting steel plate 7 and the lower connecting steel plate 8 are fixedly connected through 6 connecting plate bolts 9, two rows of connecting plate bolts 9 are installed on each single body, and each row is 3 bolts. The single bodies are connected through the connected steel plates and the connecting plate bolts 9, so that the overall stability of the tunnel yielding support resistance limiting energy absorption controller is guaranteed, and the condition that the tunnel yielding support resistance limiting energy absorption controller fails in the overall structure due to unstable connection when a load transmitted from surrounding rocks is received is prevented.
As shown in fig. 2 and 7, the single body includes upper and lower corrugated steel plates (upper corrugated steel plate 3 and lower corrugated steel plate 4), a middle partition steel plate 5, upper and lower steel plate surfaces (upper steel plate 1 and lower steel plate 2), and the number of the corrugated steel plates (upper corrugated steel plate 3 and lower corrugated steel plate 4) and the number of the middle partition steel plates 6 may be stacked in multiple layers according to actual engineering. Wherein, the upper wavy steel plate 3 is inversely welded and fixed between the upper steel panel 1 and the middle steel plate 6, the lower wavy steel plate is horizontally welded and fixed between the middle steel plate 6 and the lower steel panel 2, and the upper and lower wavy steel plates (the upper wavy steel plate 3 and the lower wavy steel plate 4), the middle steel plate 6, the upper and lower steel panels (the upper steel panel 1 and the lower steel panel 2) form a single body structure. The middle partition steel plate 6, the upper and lower wavy steel plates (the upper wavy steel plate 3 and the lower wavy steel plate 4) are tightly attached to two sides of the vertical steel plate 5, and are not fixedly connected with the vertical steel plates 5 on the two sides, and the upper end and the lower end of the vertical steel plate 5 are respectively welded and fixed on the upper steel panel 1 and the lower steel panel 2.
As shown in fig. 3, according to different surrounding rock pressures and yielding ranges, a plurality of stud shear keys 10 are installed on the upper steel panel and the lower steel panel (the upper steel panel 1 and the lower steel panel 2), the whole yielding support resistance limiting energy absorption controller is better connected with sprayed concrete through the stud shear keys 10, horizontal mutual sliding of contact surfaces of the stud shear keys and the concrete is prevented, the stud shear keys become a whole body which better resists external deformation, the stud shear keys mainly bear the effect of shearing resistance, and the stress state of the whole structure is more reasonable.
Reserved connecting plate bolt holes 16 are reserved on the upper steel panel and the lower steel panel (the upper steel panel 1 and the lower steel panel 2).
As shown in fig. 4 and 5, the upper and lower sides of the single body structure are respectively provided with a flange plate 14, one flange plate 14 is fixed on the upper steel panel 1 through 4 flange plates and steel arch positioning bolts 15, and the other flange plate 14 is fixed on the lower steel panel 2 through 4 flange plates and steel arch positioning bolts. The flange plate 14 is located the monomer major structure middle part, makes monomer major structure atress more reasonable, and the flange plate is connected with steel bow member 13 welded connection, and the length and the width of steel bow member 13 are the same with the length and the width of flange plate. The steel arch 13 transmits the load to the single body structure more uniformly through the flange plate 14, so that the stress of the single body structure is more uniform. An I-steel sleeve 12 is sleeved outside the steel arch 13, bolt holes are distributed in the flange of the steel arch 13, each flange is provided with 2 bolt holes, and the steel arch 13 is connected with the I-steel sleeve through an I-steel and sleeve positioning bolt 11. The steel sleeve 12 is sleeved outside the steel arch 13, so that the steel arch can be better prevented from being subjected to larger bending moment, and the necessary stability of the steel arch is ensured.
The whole tunnel yielding support resistance limiting energy absorption controller does not need to be welded on a construction site, only a steel arch and a steel sleeve 12 need to be connected through a positioning bolt 11 between I-steel and the sleeve, two adjacent single bodies are connected through a connecting plate bolt 9, namely, the connection between each single body is completed, a steel arch 13 and a single body main body are connected through a flange plate 14 and a positioning bolt of the steel arch 13, a plurality of stud shear keys 10 are respectively arranged on an upper steel panel and a lower steel panel (an upper steel panel 1 and a lower steel panel 2) of each single body, the stud shear keys 10 are positioned on two sides of the steel sleeve 12, and are effectively connected with sprayed concrete through the stud shear keys 10 on the upper steel panel and the lower steel panel (the upper steel panel 1 and the lower steel panel 2) to prevent the horizontal slippage phenomenon of the upper steel panel and the lower steel panel on a contact surface, the welding is not needed in the whole installation process, and the site construction is convenient.
After the tunnel yielding support resistance limiting energy absorption controller is integrally installed, when the tunnel yielding support resistance limiting energy absorption controller bears the load transmitted by surrounding rocks, the stud shear key 10 on the tunnel yielding support resistance limiting energy absorption controller is better connected with sprayed concrete, so that the horizontal sliding of the contact surfaces of the stud shear key and the sprayed concrete is prevented, and the shear resisting effect is achieved. The steel sleeve 12 has a protection effect on the steel arch 13 and prevents the steel arch 13 from bearing large bending moment, the steel arch 13 more uniformly transmits the load transmitted from the surrounding rock to the upper and lower steel panels (the upper steel panel 1 and the lower steel panel 2) through the flange plate 14, then the vertical steel plate 5 firstly deforms under the transmitted load, once the vertical steel plate 5 deforms inwards, the middle steel plate 6 and the upper and lower wavy steel plates (the upper wavy steel plate 3 and the lower wavy steel plate 4) are not connected with the vertical steel plate 5, so the middle steel plate can provide horizontal thrust to the outer side of the vertical steel plate 5 to resist the deformation to the inner side of the vertical steel plate, the bearing capacity of the single body is improved, the upper and lower wavy steel plates (the upper wavy steel plate 3 and the lower wavy steel plate 4) and the middle steel plate 6 start to bear the load along with the outward resistance deformation of the vertical steel plate 5, and the single body has a vertical compression tendency, the whole process has obvious effects of pressure limiting, resistance and energy absorption. Along with the increasing of the transmitted load, the vertical steel plate 5, the upper and lower wavy steel plates (the upper wavy steel plate 3 and the lower wavy steel plate 4) and the middle steel plate 6 deform more and are finally compressed tightly, the whole yielding supporting resistance-limiting energy-absorbing controller does not deform along with surrounding rocks, the yielding resistance-limiting energy-absorbing process is finished, the whole resistance-limiting energy-absorbing controller continues to resist the load transmitted by the surrounding rocks, the stress of the whole supporting system is reasonable, and the resistance-limiting yielding energy-absorbing effect is obvious. During construction, deformation of the yielding support resistance-limiting energy-absorbing controller and the primary support is closely monitored, and when the deformation of the whole yielding support resistance-limiting energy-absorbing controller exceeds a preset deformation limit value, early warning is timely carried out, so that the stability of the primary support is better ensured.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A tunnel yielding support resistance-limiting energy-absorbing controller is characterized by being formed by assembling a plurality of monomers, wherein adjacent monomers are connected through an upper connecting steel plate and a lower connecting steel plate, and the upper connecting steel plate and the lower connecting steel plate are fixedly connected through connecting plate bolts;
the single body comprises an upper wavy steel plate, a lower wavy steel plate, a middle partition steel plate, an upper steel panel and a lower steel panel, wherein the upper wavy steel plate is welded between the upper steel panel and the middle partition steel plate, the lower wavy steel plate is welded between the lower steel panel and the middle partition steel plate, the upper wavy steel plate, the lower wavy steel plate, the middle partition steel plate, the upper steel panel and the lower steel panel form a single body main structure, the two sides of the middle partition steel plate, the two sides of the upper wavy steel plate and the two sides of the lower wavy steel plate are tightly attached to arrange vertical steel plates, the vertical steel plates are not fixedly connected with the vertical steel plates on the two sides, and the upper end and the lower end of each vertical steel plate are respectively welded and fixed on the upper steel panel and the lower steel panel;
a plurality of stud shear keys are arranged on the upper steel panel and the lower steel panel;
the upper side and the lower side of the single body main structure are respectively provided with a flange plate, one flange plate is fixed on the upper steel panel through a flange plate and a steel arch positioning bolt, the other flange plate is fixed on the lower steel panel through a flange plate and a steel arch positioning bolt, the flange plate is positioned in the middle of the single body main structure and is welded with the steel arch, an I-shaped steel sleeve is sleeved outside the steel arch, and the steel arch is connected with the I-shaped steel sleeve through an I-shaped steel and a positioning bolt between sleeves.
2. The tunnel yielding support resistance-limiting energy-absorbing controller according to claim 1, wherein the stud shear key is connected with concrete.
3. The tunnel yielding support resistance-limiting energy-absorbing controller according to claim 1, wherein the upper connecting steel plate and the lower connecting steel plate are fixedly connected with the single bodies through 6 connecting plate bolts, two rows of connecting plate bolts are mounted on each single body, and each row is 3 bolts.
4. The tunnel yielding support resistance-limiting energy-absorbing controller according to claim 1, wherein the upper wavy steel plate is inversely welded and fixed between the upper steel face plate and the middle steel plate, and the lower wavy steel plate is sequentially welded and fixed between the middle steel plate and the lower steel face plate.
5. The tunnel yielding support resistance-limiting energy-absorbing controller according to claim 1, wherein the length and width of the steel arch are the same as those of the flange plate.
6. The tunnel yielding support resistance-limiting energy-absorbing controller according to claim 1, wherein bolt holes are arranged at the flanges of the steel arch frame, and each flange is provided with 2 bolt holes.
7. The tunnel yielding support resistance-limiting energy-absorbing controller according to claim 1, wherein the thicknesses of the upper steel face plate and the lower steel face plate are both 10-15 mm; the thickness of the upper wavy steel plate and the thickness of the lower wavy steel plate are both 8-12mm, and the thickness of the vertical steel plate is 8-12 mm.
8. The tunnel yielding support resistance-limiting energy-absorbing controller according to claim 1, wherein reserved connecting plate bolt holes are reserved in the upper steel panel and the lower steel panel.
9. The tunnel yielding support resistance-limiting energy-absorbing controller according to claim 1, characterized in that the number of the wavy steel plates and the number of the partition steel plates are determined according to actual engineering and are arranged in a multi-layer overlapping manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210320653.2A CN114562294B (en) | 2022-03-29 | 2022-03-29 | Tunnel lets pressure to strut restriction energy-absorbing controller that hinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210320653.2A CN114562294B (en) | 2022-03-29 | 2022-03-29 | Tunnel lets pressure to strut restriction energy-absorbing controller that hinders |
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| CN114562294A true CN114562294A (en) | 2022-05-31 |
| CN114562294B CN114562294B (en) | 2023-03-10 |
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| GB280417A (en) * | 1927-03-05 | 1927-11-17 | Hans Schaefer | Improvements in lining constructions for galleries, tunnels or the like |
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| 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 |
| CN107795326A (en) * | 2017-10-24 | 2018-03-13 | 仇文革 | The construction method of damper and tunnel support structure |
| CN209067236U (en) * | 2018-11-20 | 2019-07-05 | 中铁二十局集团第六工程有限公司 | Loess tunnel preliminary bracing structure based on limit resistance device |
| CN111764930A (en) * | 2020-06-05 | 2020-10-13 | 中南大学 | Tunnel supporting structure with honeycomb energy absorption device and construction method thereof |
| CN111828053A (en) * | 2020-08-17 | 2020-10-27 | 成都理工大学 | Steel pipe concrete and sprayed concrete rigid combined structure tunnel supporting system and construction method |
| CN112282799A (en) * | 2020-11-02 | 2021-01-29 | 辽宁工程技术大学 | Support-anchor integrated resistance-limiting energy-consuming large-deformation tunnel primary support structure and construction method |
| CN212837858U (en) * | 2020-06-19 | 2021-03-30 | 四川川交路桥有限责任公司 | Connecting device for soft rock deformation tunnel steel arch center node |
| CN114033440A (en) * | 2021-11-18 | 2022-02-11 | 成都天佑智隧科技有限公司 | Construction method of tunnel supporting structure |
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2022
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB280417A (en) * | 1927-03-05 | 1927-11-17 | Hans Schaefer | Improvements in lining constructions for galleries, tunnels or the like |
| CN206439059U (en) * | 2017-01-10 | 2017-08-25 | 中铁第一勘察设计院集团有限公司 | It is a kind of to be used for the energy dissipating supporting construction in tunnel under large deformation wall rock condition |
| CN107795326A (en) * | 2017-10-24 | 2018-03-13 | 仇文革 | The construction method of damper and tunnel support structure |
| 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 |
| CN209067236U (en) * | 2018-11-20 | 2019-07-05 | 中铁二十局集团第六工程有限公司 | Loess tunnel preliminary bracing structure based on limit resistance device |
| CN111764930A (en) * | 2020-06-05 | 2020-10-13 | 中南大学 | Tunnel supporting structure with honeycomb energy absorption device and construction method thereof |
| CN212837858U (en) * | 2020-06-19 | 2021-03-30 | 四川川交路桥有限责任公司 | Connecting device for soft rock deformation tunnel steel arch center node |
| CN111828053A (en) * | 2020-08-17 | 2020-10-27 | 成都理工大学 | Steel pipe concrete and sprayed concrete rigid combined structure tunnel supporting system and construction method |
| CN112282799A (en) * | 2020-11-02 | 2021-01-29 | 辽宁工程技术大学 | Support-anchor integrated resistance-limiting energy-consuming large-deformation tunnel primary support structure and construction method |
| CN114033440A (en) * | 2021-11-18 | 2022-02-11 | 成都天佑智隧科技有限公司 | Construction method of tunnel supporting structure |
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