CN111042832A - Concrete lining construction process for tunnel - Google Patents

Concrete lining construction process for tunnel Download PDF

Info

Publication number
CN111042832A
CN111042832A CN201911082890.4A CN201911082890A CN111042832A CN 111042832 A CN111042832 A CN 111042832A CN 201911082890 A CN201911082890 A CN 201911082890A CN 111042832 A CN111042832 A CN 111042832A
Authority
CN
China
Prior art keywords
concrete
tunnel
template
arch
trolley
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911082890.4A
Other languages
Chinese (zh)
Inventor
郑鹏
胡焰
何丹
吴金儒
毛垒
王凯
陈宝雯
张婉
周星园
马凤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Zhuxin Dachuang Technology Co Ltd
Original Assignee
Guizhou Zhuxin Dachuang Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guizhou Zhuxin Dachuang Technology Co Ltd filed Critical Guizhou Zhuxin Dachuang Technology Co Ltd
Priority to CN201911082890.4A priority Critical patent/CN111042832A/en
Publication of CN111042832A publication Critical patent/CN111042832A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining 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
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining 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
    • E21D11/102Removable shuttering; Bearing or supporting devices therefor
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14Lining predominantly with metal
    • E21D11/15Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
    • E21D11/152Laggings made of grids or nettings
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/14Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings

Abstract

The invention provides a concrete lining construction process for a tunnel, which comprises the steps of excavating the tunnel, paving a plurality of sections of reinforcing meshes, installing an arch template on a template trolley, spraying a proper amount of water to the inner wall of the tunnel, preparing concrete, pouring the concrete in sections, repairing the surface of the obtained lining layer, and maintaining the lining layer; by adopting the technical scheme of the invention, the structural strength of the lining layer is enhanced by paving the reinforcing mesh, the capability of the lining layer for resisting the change of the environmental temperature is enhanced by the way of paving the reinforcing mesh in sections and pouring in sections, the service life of the lining layer is prolonged, air is effectively prevented from entering the concrete by the way of firstly soaking and then pouring the concrete, the penetration of water in the surrounding rock is effectively prevented by embedding the rubber water stop belts, the effect of enabling the concrete to be condensed and compact is achieved, various mechanical devices are used in the construction process, the construction process is simplified, the labor intensity is reduced, and the construction quality is improved.

Description

Concrete lining construction process for tunnel
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a concrete lining construction process for a tunnel.
Background
In the tunnel construction, the section of tunnel is circular mostly, and the main load that it bore is the water pressure in the country rock, because the hole body is formed by excavating in the rock mass, and just destroyed the original balanced state of rock mass after excavating, leads to the rock mass probably to produce and warp and collapse, and the hole body still needs to bear effects such as inside and outside water pressure and country rock pressure moreover. Therefore, existing tunnels are typically provided with a permanent, prestressed concrete lining of sufficient strength and impermeability to ensure safety.
The existing prestressed concrete lining tunnel generally establishes hundreds of tons of annular prestressed steel bars around a concrete lining layer to apply prestress. For example, the clean inner diameter of the rock of the Qingjiang river-separating in China is 9.5m, the clean inner diameter of the primary level of the natural bridge is 9.6m, and the like, corrugated pipes, reeving, tensioning, grouting and the like are all embedded in the lining layer to line the tunnel with the bonded steel stranded wires. At the bottom of the small wave, the sand discharge tunnel has a clean inner diameter of 6.5m, an unbonded steel strand is adopted, a pore passage is not required to be reserved during construction, the winding angle reaches 720 degrees, the steel strand is laid in a template according to the design requirement as common steel bars before concrete is poured, then concrete is poured, and tensioning, anchoring and end part plugging are carried out after the concrete reaches certain strength. Since it does not need grouting, the construction process is simplified. Even so, engineers are still somewhat concerned with the durability of the anchorage and the overall unbonded anchorage system. And no matter there is bonding steel strand wires lining tunnel, still there is not bonding steel strand wires lining tunnel, all need a large amount of steel strand wires to exert prestressing force, but receive prior art's restriction, the quantity of steel strand wires receives the restriction, consequently its prestressing force also further receives the restriction, thereby the ability that makes the interior longitudinal crack of resistance tunnel is not enough, the durability of whole structure has been reduced, and it still needs to dispose a large amount of non-prestressed steel strand wires usually, thereby further increased the cost of construction, it is very troublesome also to make the construction.
Disclosure of Invention
In order to solve the technical problems, the invention provides a concrete lining construction process for a tunnel.
The invention is realized by the following technical scheme.
The invention provides a concrete lining construction process for a tunnel, which comprises the following steps:
the method comprises the following steps: excavating a tunnel at a geographic location;
step two: paving a plurality of sections of reinforcing meshes on the left side wall, the right side wall and the top wall of the tunnel in the first step along the extending direction of the tunnel in the first step, reserving proper telescopic gaps between any two adjacent sections of reinforcing meshes, wherein each section of reinforcing mesh is formed by connecting longitudinal reinforcing steel bars arranged along the extending direction of the tunnel with circumferential reinforcing steel bars arranged along the surfaces of the left side wall, the top wall and the right side wall of the tunnel;
step three: installing an arch template on the template trolley: preparing a template trolley and an arch template, wherein the template trolley comprises a trolley frame with a cross section in a shape like a Chinese character 'men', a plurality of top template beams extending outwards are fixedly connected to the outer surfaces of the left side and the right side of the trolley frame and the outer surface of the top of the trolley frame, the arch template is in an arch shape formed by bending and processing a steel plate, the inner surface of the arch template completely covers all the top template beams, and the arch template is fixedly connected with the template trolley;
step four: spraying a proper amount of water on the left side wall, the right side wall and the top wall of the tunnel paved with the first section of reinforcing mesh in the second step along the extending direction of the tunnel in the first step to infiltrate the rock surface in the tunnel;
step five: uniformly mixing a proper amount of cement, sand and gravel to prepare concrete;
step six: pouring concrete: pushing the formwork trolley with the installed arch formwork in the third step into a first section of reinforcing mesh in the tunnel, and filling the gap between the outer surface of the arch formwork and the inner wall of the tunnel with the prepared concrete in the fifth step by using a concrete pump from bottom to top;
step seven: and after the concrete is initially set, pushing the formwork trolley provided with the arch formwork into the next section of reinforcing mesh in the tunnel, repeating the fourth step to the sixth step, and pouring concrete on the left side wall, the right side wall and the top wall of the tunnel provided with the reinforcing mesh in sequence to obtain the lining layer.
The step two of connecting the longitudinal steel bars and the circumferential steel bars together to form the steel bar mesh refers to the following steps: at the staggered connection position of any longitudinal steel bar and the circumferential steel bar, each longitudinal steel bar and each circumferential steel bar are connected together by welding, metal wire binding or connection through a mechanical connecting structural member.
The implementation sequence of the step four and the step five can be exchanged.
The step six further comprises the following steps of before concrete is poured by using the concrete pump: and prefabricating by using a proper amount of concrete to obtain a plurality of concrete cushion blocks, filling the concrete cushion blocks into gaps between the outer surface of the arch formwork and the inner wall of the tunnel, and binding and fixing the concrete cushion blocks and the section of reinforcing mesh together by adopting lead wires.
The concrete lining construction process for the tunnel further comprises the following steps: and D, after the multiple sections of reinforcing meshes are laid along the left side wall, the right side wall and the top wall of the tunnel in the step two, various embedded parts and rubber water stops are laid among the sections of reinforcing meshes.
The step of pouring concrete by using the concrete pump in the sixth step further comprises the following steps: and preparing a concrete tank truck, pushing the concrete tank truck into the tunnel, stopping at a position close to the template trolley, and supplying concrete to the concrete pump through the concrete tank truck.
And sixthly, in the process of filling the gap between the outer surface of the arch formwork and the inner wall of the tunnel with the concrete from bottom to top, using an inserted vibrator, a flat vibrator or an attached vibrator to vibrate the poured concrete.
The concrete lining construction process for the tunnel further comprises the following steps: after completing step seven, the following steps are performed: and after the initial setting of the concrete, sprinkling water on the surface of the lining layer within 12 to 18 hours, and covering the surface of the lining layer with a gunny bag to maintain the concrete for more than 28 days.
Step three the installation arch form on the form pallet still includes: a layer of mold release agent is applied to the exterior surface of the arch form before the interior surface of the arch form is completely covered over all of the top form beams.
The concrete lining construction process for the tunnel further comprises the following steps: after completing step seven, the following steps are performed: and inspecting the surface of the lining layer, if the end part of the longitudinal steel bar or the circumferential steel bar is exposed out of the surface of the lining layer, cutting the end part of the longitudinal steel bar or the circumferential steel bar at the position by using a grinding machine, cutting the position to be 20-30 mm below the surface of the lining layer by using the grinding machine, and filling and leveling by using epoxy mortar.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, the reinforcing mesh is paved in sections, then the tunnel is lined in sections, the reinforcing mesh greatly enhances the structural strength of the lining layer, and as the construction is carried out in sections, when the internal environment temperature of the tunnel is inconsistent with the environment temperature at the external opening of the tunnel, each section of lining layer has better toughness, which is beneficial to resisting the adverse effect generated by the change of the environment temperature and prolonging the service life of the lining layer, in addition, when the concrete is poured, the inner wall of the tunnel is firstly soaked, so that the concrete is faster in condensation speed, air is effectively prevented from entering the concrete, the concrete is fully vibrated in the process of pouring the concrete, air in the concrete escapes, the rubber waterstop is embedded in the concrete, when the concrete is condensed, the rubber waterstop effectively prevents water inside surrounding rocks from permeating into the concrete, and the concrete is effectively guaranteed to be condensed and compact, during construction, most of the lining layer is constructed by using mechanical equipment, and the obtained lining layer contour is consistent with the preset tunnel contour, so that the construction process is simplified, the labor intensity is reduced, and the construction quality is improved.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention in step six.
In the figure: 1-tunnel, 2-reinforcing mesh, 3-trolley frame, 4-arch template, 5-top mould beam and 6-lining layer.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 and 2, the invention provides a concrete lining construction process for a tunnel, which comprises the following steps:
the method comprises the following steps: excavating a tunnel 1 at a geographical location;
step two: paving a plurality of sections of reinforcing mesh 2 on the left side wall, the right side wall and the top wall of the first tunnel 1 along the extending direction of the first tunnel 1, reserving a proper telescopic gap between any two adjacent sections of reinforcing mesh 2, wherein each section of reinforcing mesh 2 is formed by connecting longitudinal reinforcing steel bars arranged along the extending direction of the first tunnel 1 and circumferential reinforcing steel bars arranged along the surfaces of the left side wall, the top wall and the right side wall of the first tunnel 1; further, the step of connecting the longitudinal steel bars and the circumferential steel bars together to form the steel bar mesh 2 is as follows: at the staggered connection position of any longitudinal steel bar and the circumferential steel bar, each longitudinal steel bar and each circumferential steel bar are connected together by welding, metal wire binding or connection through a mechanical connecting structural member. Further, after the plurality of sections of the mesh reinforcements 2 are laid along the left and right side walls and the top wall of the tunnel 1, various embedded parts and rubber water stops are laid between the sections of the mesh reinforcements 2.
Step three: installing an arch template 4 on the template trolley: preparing a template trolley and an arch template 4, wherein the template trolley comprises a trolley frame 3 with a cross section in a shape of a Chinese character 'men', a plurality of top template beams 5 extending outwards are fixedly connected on the outer surfaces of the left side and the right side of the trolley frame 3 and the outer surface of the top of the trolley frame, the arch template 4 is in an arch shape formed by bending and processing steel plates, the inner surface of the arch template 4 is completely covered on all the top template beams 5, and the arch template 4 is fixedly connected with the template trolley; further, installing the arch form 4 on the form pallet further includes: a layer of release agent is applied to the outer surface of the arch form 4 before the inner surface of the arch form 4 is completely covered over all the top mould beams 5.
Step four: spraying a proper amount of water on the left side wall, the right side wall and the top wall of the tunnel 1 paved with the first section of reinforcing mesh 2 in the second step along the extending direction of the tunnel 1 in the first step to soak the rock surface in the tunnel 1; in addition, the implementation sequence of the step four and the step five can be changed.
Step five: uniformly mixing a proper amount of cement, sand and gravel to prepare concrete;
step six: pouring concrete: pushing the formwork trolley provided with the arch formwork 4 in the third step into the first section of the reinforcing mesh 2 in the tunnel 1, and filling the gap between the outer surface of the arch formwork 4 and the inner wall of the tunnel 1 with the concrete prepared in the fifth step by using a concrete pump from bottom to top; further, before concrete is poured by using the concrete pump, the method also comprises the following steps: and prefabricating by using a proper amount of concrete to obtain a plurality of concrete cushion blocks, filling the concrete cushion blocks into gaps between the outer surface of the arch template 4 and the inner wall of the tunnel 1, and binding and fixing the concrete cushion blocks and the section of the reinforcing mesh 2 together by adopting lead wires. In addition, it is preferable that the cast concrete is vibrated using an insertion type vibrator, a flat plate vibrator or an attachment type vibrator while the gap between the outer surface of the arch form 4 and the inner wall of the tunnel 1 is filled with the concrete in the order from the bottom up.
Furthermore, the step of pouring concrete using a concrete pump further comprises: a concrete tanker is prepared, pushed into the tunnel 1 and parked at a position close to the formwork trolley, and concrete is supplied to the concrete pump through the concrete tanker. Preferably, the capacity of the concrete tank truck is more than 3 cubic meters, and the concrete tank truck can be pulled into the tunnel by using a mine hoist.
Step seven: and after the concrete is initially set, pushing the template trolley provided with the arch template 4 into the next section of reinforcing mesh 2 in the tunnel 1, repeating the fourth step to the sixth step, and pouring concrete on the left side wall, the right side wall and the top wall of the tunnel 1 provided with the reinforcing mesh 2 in sequence to obtain the lining layer 6.
By adopting the technical scheme of the invention, the reinforcing mesh is paved in sections, then the tunnel is lined in sections, the reinforcing mesh greatly enhances the structural strength of the lining layer, and as the construction is carried out in sections, when the internal environment temperature of the tunnel is inconsistent with the environment temperature at the external opening of the tunnel, each section of lining layer has better toughness, which is beneficial to resisting the adverse effect generated by the change of the environment temperature and prolonging the service life of the lining layer, in addition, when the concrete is poured, the inner wall of the tunnel is firstly soaked, so that the concrete is faster in condensation speed, air is effectively prevented from entering the concrete, the concrete is fully vibrated in the process of pouring the concrete, air in the concrete escapes, the rubber waterstop is embedded in the concrete, when the concrete is condensed, the rubber waterstop effectively prevents water inside surrounding rocks from permeating into the concrete, and the concrete is effectively guaranteed to be condensed and compact, during construction, most of the lining layer is constructed by using mechanical equipment, and the obtained lining layer contour is consistent with the preset tunnel contour, so that the construction process is simplified, the labor intensity is reduced, and the construction quality is improved.
Further, after completing step seven, the following steps are performed: and (3) sprinkling water on the surface of the lining layer 6 within 12 to 18 hours after the initial setting of the concrete, and covering the surface of the lining layer 6 with a gunny bag to maintain the concrete for more than 28 days.
Further, after completing step seven, the following steps are performed: and inspecting the surface of the lining layer 6, cutting the end part of the longitudinal steel bar or the circumferential steel bar at the position by using a grinding machine if the end part of the longitudinal steel bar or the circumferential steel bar is exposed out of the surface of the lining layer 6, cutting the position to be 20-30 mm below the surface of the lining layer 6 by using the grinding machine, and filling the position by using epoxy mortar.

Claims (10)

1. A concrete lining construction process for a tunnel is characterized in that: the method comprises the following steps:
the method comprises the following steps: excavating a tunnel (1) at a geographical location;
step two: paving a plurality of sections of reinforcing mesh (2) on the left side wall, the right side wall and the top wall of the tunnel (1) in the step one along the extending direction of the tunnel (1), reserving proper telescopic gaps between any two adjacent sections of reinforcing mesh (2), wherein each section of reinforcing mesh (2) is formed by connecting longitudinal reinforcing steel bars arranged along the extending direction of the tunnel (1) and circumferential reinforcing steel bars arranged along the surfaces of the left side wall, the top wall and the right side wall of the tunnel (1);
step three: installing an arch template (4) on the template trolley: preparing a template trolley and an arch template (4), wherein the template trolley comprises a trolley frame (3) with a cross section in a shape like a Chinese character 'men', a plurality of top template beams (5) extending outwards are fixedly connected on the outer surfaces of the left side and the right side of the trolley frame (3) and the outer surface of the top of the trolley frame, the arch template (4) is in an arch shape formed by bending and processing steel plates, the inner surface of the arch template (4) is completely covered on all the top template beams (5), and the arch template (4) is fixedly connected with the template trolley;
step four: spraying a proper amount of water on the left side wall, the right side wall and the top wall of the tunnel (1) paved with the first section of reinforcing mesh (2) in the step two along the extending direction of the tunnel (1) in the step one to infiltrate the rock surface in the tunnel (1);
step five: uniformly mixing a proper amount of cement, sand and gravel to prepare concrete;
step six: pouring concrete: pushing the formwork trolley provided with the arch formwork (4) in the third step into the first section of reinforcing mesh (2) inside the tunnel (1), and filling the gap between the outer surface of the arch formwork (4) and the inner wall of the tunnel (1) with the prepared concrete in the fifth step from bottom to top by using a concrete pump;
step seven: and after the concrete is initially set, pushing the formwork trolley provided with the arch formwork (4) into the next section of reinforcing mesh (2) in the tunnel (1), repeating the fourth step to the sixth step, and pouring concrete on the left side wall, the right side wall and the top wall of the tunnel (1) provided with the reinforcing mesh (2) in sequence to obtain a lining layer (6).
2. A concrete lining construction process for a tunnel according to claim 1, wherein: the step two of connecting the longitudinal steel bars and the circumferential steel bars together to form the steel bar mesh (2) refers to the following steps: at the staggered connection position of any longitudinal steel bar and the circumferential steel bar, each longitudinal steel bar and each circumferential steel bar are connected together by welding, metal wire binding or connection through a mechanical connecting structural member.
3. A concrete lining construction process for a tunnel according to claim 1, wherein: the implementation sequence of the step four and the step five can be exchanged.
4. A concrete lining construction process for a tunnel according to claim 1, wherein: the step six further comprises the following steps of before concrete is poured by using the concrete pump: a plurality of concrete cushion blocks are obtained by prefabricating a proper amount of concrete, the concrete cushion blocks are filled into a gap between the outer surface of the arch template (4) and the inner wall of the tunnel (1), and the concrete cushion blocks and the section of reinforcing mesh (2) are bound and fixed together by adopting lead wires.
5. A concrete lining construction process for a tunnel according to claim 1, wherein: the concrete lining construction process for the tunnel further comprises the following steps: and in the second step, after the multiple sections of reinforcing meshes (2) are laid along the left side wall, the right side wall and the top wall of the tunnel (1), various embedded parts and rubber water stops are laid between the multiple sections of reinforcing meshes (2).
6. A concrete lining construction process for a tunnel according to claim 1, wherein: the step of pouring concrete by using the concrete pump in the sixth step further comprises the following steps: preparing a concrete tank truck, pushing the concrete tank truck into the tunnel (1) and stopping at a position close to the template trolley, and supplying concrete to the concrete pump through the concrete tank truck.
7. A concrete lining construction process for a tunnel according to claim 1, wherein: and sixthly, in the process that the gap between the outer surface of the arch template (4) and the inner wall of the tunnel (1) is filled with the concrete from bottom to top, an inserted vibrator, a flat vibrator or an attached vibrator is used for vibrating the poured concrete.
8. A concrete lining construction process for a tunnel according to claim 1, wherein: the concrete lining construction process for the tunnel further comprises the following steps: after completing step seven, the following steps are performed: and after the initial setting of the concrete, sprinkling water on the surface of the lining layer (6) within 12 to 18 hours, and covering the surface of the lining layer (6) with a gunny bag to maintain the concrete for more than 28 days.
9. A concrete lining construction process for a tunnel according to claim 1, wherein: step three the installation arch form (4) still includes on the form pallet: before the inner surface of the arch formwork (4) is completely covered on all the top formwork beams (5), a layer of release agent is coated on the outer surface of the arch formwork (4).
10. A concrete lining construction process for a tunnel according to claim 1, wherein: the concrete lining construction process for the tunnel further comprises the following steps: after completing step seven, the following steps are performed: and inspecting the surface of the lining layer (6), if the end part of the longitudinal steel bar or the circumferential steel bar is exposed out of the surface of the lining layer (6), cutting off the end part of the longitudinal steel bar or the circumferential steel bar at the position by using a grinding machine, cutting the grinding machine to a depth of 20-30 mm below the surface of the lining layer (6) at the position, and filling and leveling by using epoxy mortar.
CN201911082890.4A 2019-11-07 2019-11-07 Concrete lining construction process for tunnel Pending CN111042832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911082890.4A CN111042832A (en) 2019-11-07 2019-11-07 Concrete lining construction process for tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911082890.4A CN111042832A (en) 2019-11-07 2019-11-07 Concrete lining construction process for tunnel

Publications (1)

Publication Number Publication Date
CN111042832A true CN111042832A (en) 2020-04-21

Family

ID=70231850

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911082890.4A Pending CN111042832A (en) 2019-11-07 2019-11-07 Concrete lining construction process for tunnel

Country Status (1)

Country Link
CN (1) CN111042832A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104612698A (en) * 2015-01-24 2015-05-13 杭州天恒投资建设管理有限公司 Method for constructing upper step middle partition wall of shallow-buried excavation tunnel
CN107152292A (en) * 2017-06-30 2017-09-12 云南公投建设集团隧道工程有限公司 Tunnel descending inclined shaft contrary sequence method two serves as a contrast construction method
CN108330835A (en) * 2018-01-31 2018-07-27 中铁二十二局集团第工程有限公司 The construction method of setting bracket
CN110056372A (en) * 2019-03-12 2019-07-26 中交一公局桥隧工程有限公司 Concreting method in a kind of lining construction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104612698A (en) * 2015-01-24 2015-05-13 杭州天恒投资建设管理有限公司 Method for constructing upper step middle partition wall of shallow-buried excavation tunnel
CN107152292A (en) * 2017-06-30 2017-09-12 云南公投建设集团隧道工程有限公司 Tunnel descending inclined shaft contrary sequence method two serves as a contrast construction method
CN108330835A (en) * 2018-01-31 2018-07-27 中铁二十二局集团第工程有限公司 The construction method of setting bracket
CN110056372A (en) * 2019-03-12 2019-07-26 中交一公局桥隧工程有限公司 Concreting method in a kind of lining construction

Similar Documents

Publication Publication Date Title
CN102937027B (en) A kind of construction method of edge top arch and bottom arch of concrete pouring tunnel
US4972537A (en) Orthogonally composite prefabricated structural slabs
CN106223360B (en) Using the open cut cast in place and precast construction subway station construction method of stake supporting system
CN101644160B (en) High ground stress soft rock stress-relief construction method
CN102747677B (en) Bridge and construction method thereof
CN104060629B (en) The superimposed wall construction method in covered back-digging subway station and portable side wall formwork jumbo
US2948995A (en) Connections between reinforced, precast concrete structures and method of making same
CN106284080B (en) Continuous rigid frame aqueduct closes up section constructing method
KR100701633B1 (en) Load dispersing plate for supporting central part of a twin tunnel and a construction method of a twin tunnel using the load dispersing plate
US7645097B2 (en) Method for saturating cavities present in a mass of soil or in a body in general
CN102203346B (en) Construction method of steel composite girder bridge
CN106677787B (en) Vertical shaft repairing and reinforcement structure and repairing and reinforcement construction method
CN102031784B (en) Slope protection pile pouring and cable bolting construction method for deep foundation pit
CN107165272A (en) Prestressing force assembly concrete frame joint attachment structure and its construction method
CN104878835B (en) Strip footing increases basement structure behind house
CN104847014B (en) The vertical connecting structure of assembly concrete shear wall and construction method
CN106958256B (en) A kind of placement layer by layer, the open caisson construction technique repeatedly sunk
CN102767173A (en) High polymer material slurry filled discrete material pile composite foundation and construction method thereof
CN104895092B (en) The method that a kind of interim lattice column of inner support is used as permanent structure post
CN105201012B (en) Casting cable trench after assembly of L-shaped precast concrete and construction method of casting cable trench
KR20140047118A (en) Foundation system for bridges
CN104790302B (en) A kind of high pier continuous rigid frame bridge end bay straightway Hanging Basket coordinates bent cap support integral construction method
KR20090114863A (en) Parallelly connected iron tube and construction method for underground structure using the same
CN101818645B (en) Construction method for newly increasing arched open cut tunnel at railway operating line tunnel portal
CN103615053B (en) Monolithic reinforced concrete structure post empiricism engineering method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination