CN112065456A - Stage-movable subway interval tunnel shield segment reinforcing structure - Google Patents
Stage-movable subway interval tunnel shield segment reinforcing structure Download PDFInfo
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- CN112065456A CN112065456A CN202011081380.8A CN202011081380A CN112065456A CN 112065456 A CN112065456 A CN 112065456A CN 202011081380 A CN202011081380 A CN 202011081380A CN 112065456 A CN112065456 A CN 112065456A
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 43
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- 238000000576 coating method Methods 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 claims description 13
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- 241000219122 Cucurbita Species 0.000 description 1
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/12—Temporary supports for use during building; Accessories
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/08—Lining with building materials with preformed concrete slabs
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Abstract
The invention relates to a stage-by-stage movable subway interval tunnel shield segment reinforcing structure which comprises an embedded arc-shaped component at the lower part of a ballast bed and a detachable arc-shaped component at the upper part of the ballast bed; the 'staging' means that arc-shaped components are pre-embedded at the lower part of a ballast bed in advance between a shield segment and the ballast bed and are integrally cast with the concrete ballast bed, and after the construction of the tunnel shield is finished, in an externally interfered section, the arc-shaped components (3, 4, 5, 6, 7) which can be disassembled at the upper part of the ballast bed are connected and sealed with the pre-embedded arc-shaped components (2) at the lower part of the ballast bed to form a whole ring structure to play a role in reinforcing; the movable type means that after external interference factors are eliminated, the arc-shaped component above the track bed can be removed, and the movable type track bed is moved to the next section to continue to reinforce. The method can avoid the damage of the reinforcing operation to the ballast bed, reduce the later-period diseases of the tunnel, and flexibly implement the operation according to the uncertainty of the external interference factors.
Description
Technical Field
The invention relates to the technical field of urban rail transit construction, in particular to a stage-by-stage movable subway interval tunnel shield segment reinforcing structure.
Background
At present, with the construction and high-speed development of urban rail transit, the condition that subway tunnels are affected by the construction of adjacent buildings becomes an unavoidable practical problem. When the construction is carried out at the adjacent position of the subway tunnel, along with the excavation of the existing covering soil and the construction of a bridge pile foundation, the influence on the deformation of the subway tunnel is possible, the problems that the shield tunnel segment joint is leaked, the structure is cracked, the rail surface elevation and the geometric dimension cannot meet the track operation requirement and the like are caused by overlarge deformation, and the influence on the normal operation of the subway is caused, so that the intersection of the subway tunnel and the adjacent construction position becomes a sensitive point for the safe operation of the shield tunnel and a weak link of the tunnel safety guarantee which needs key attention.
The existing protection technology for the stability of the existing subway shield tunnel mainly has two types. One is to take measures in the process of adjacent construction, and measures such as driving protective piles and arranging filling materials are often adopted on a path where the adjacent construction affects the stability of the tunnel. Such measures are often restricted by actual conditions, and the engineering investment and implementation difficulty are high, so that good application effect cannot be achieved. The other method is to adopt a reinforcing measure for the existing subway tunnel, for example, temporarily reinforcing the shield segment of the tunnel in the external interference sensitive section, and often adopting a semi-ring steel ring arranged in the segment for reinforcement. Because the sensitive section of external interference is difficult to pinpoint in the construction, when strengthening the pipe sheet after the tunnel is built, only half ring strengthening can be carried out on the part above the track bed, closed full ring can not be formed, and the strengthening effect is limited. In addition, conventional shield reinforcing devices typically require the removal of portions of the track bed structure for the operation of connecting the reinforcing device to the entire track bed, which can significantly compromise the integrity of the track bed structure.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the traditional subway tunnel reinforcing technology, and provides a movable reinforcing structure device in a shield segment, which is simple and convenient to construct, low in construction cost and quick in construction, for the safety protection of a subway shield tunnel.
In order to achieve the purpose, the invention provides a stage-by-stage movable subway interval tunnel shield segment reinforcing structure device, which is characterized in that: the device comprises a track bed lower embedded arc-shaped component and a track bed upper detachable arc-shaped component, wherein the track bed upper detachable arc-shaped component is formed by assembling a plurality of sections of arc-shaped components; the arc-shaped component is matched with the shape of a standard subway tunnel shield segment, is tightly attached to the inner surface of the shield segment and can cover the joint part of the shield segment; and an anchoring bolt is connected between the arc-shaped member and the shield pipe sheet ring.
The ' staged ' subway shield segment reinforcing structure device ' refers to: before the concrete track bed is poured, pre-embedding an arc-shaped component at the lower part of the track bed between a shield segment and the track bed in the whole length of a reinforcing section of the subway shield tunnel in advance, and then integrally pouring the arc-shaped component with the concrete track bed; after the tunnel shield construction is completed, in an area subjected to external interference, the part above the ballast bed is provided with the detachable arc-shaped component on the upper part of the ballast bed and is connected and sealed with the embedded arc-shaped component on the lower part of the ballast bed to form a whole ring structure, so that the reinforcing effect is achieved.
"movable" subway shield constructs section of jurisdiction reinforced structure device, "movable" means: the detachable arc-shaped member on the upper part of the track bed is adopted to reinforce shield segments above the track bed in a section which is interfered by the outside, after external interference factors are eliminated, the arc-shaped member above the track bed can be detached and moved to the next section to continue reinforcing, and the section which is not interfered by the outside does not need reinforcing.
The arc-shaped member can be divided into an embedded arc-shaped member at the lower part of the track bed and a detachable arc-shaped member at the upper part of the track bed according to the implementation stage, the arc-shaped member can be formed by annularly splicing multiple sections of parts which are formed by compounding metal, high-strength fiber materials and the like, and is arranged along the inner arc surface of the shield segment, and the arc-shaped member is connected end to end in an annular manner to form an integral reinforced structure device.
And the circular arc-shaped member is anchored by adopting batten plate anchor bolts or bolts between the annular adjacent members, and 3-5 bolt hole positions are reserved at two ends of the circular arc-shaped member corresponding to anchoring positions.
The two ends of the embedded arc-shaped component at the lower part of the track bed leave an operation space of about 10cm relative to the whole track bed, so that the damage to the integrity of the track bed when the arc-shaped component can be detached from the upper part of the track bed to perform bolt connection operation is avoided.
The width of the embedded arc-shaped component at the lower part of the ballast bed is 1.2m, the embedded arc-shaped component is as wide as the shield segment, and the embedded arc-shaped component is continuously arranged in multiple segments in the longitudinal direction in the shield interval range; the detachable arc-shaped member on the upper portion of the ballast bed is within 1.0m in width, is discontinuously arranged along multiple longitudinal sections of the shield segment in an externally interfered section, and a certain space is reserved to avoid equipment, pipeline supports and the like arranged on a pre-buried groove of the shield segment and a channel.
The circular arc-shaped members on the upper portion of the track bed can be detached, moved and reused, and longitudinally adjacent members can be connected by adopting steel plates and the like at positions without equipment and pipeline arrangement, so that the connection and integrity between the ring members are enhanced.
The embedded arc-shaped members at the lower part of the ballast bed and the detachable arc-shaped members at the upper part of the ballast bed are longitudinally arranged in a staggered manner relative to the shield segment, namely, each section of arc-shaped member covers the circumferential joint of the shield segment, and the joint between the longitudinal arc-shaped members is arranged in the middle of the segment, so that the longitudinal rigidity of the shield segment can be enhanced.
The arc-shaped member is tightly attached to the inner arc surface of the shield segment, the arc-shaped member is connected with the shield segment through the anchor bolts, the gap is tightly filled through an epoxy grouting process, and the arc-shaped member can be subjected to coating anti-corrosion treatment.
The position of the anchor bolt between the arc-shaped member and the shield segment needs to be kept away from hand holes, segment steel bars and the like, and the position is properly adjusted when meeting, but the distance of keeping away from the edge needs to be larger than 100 mm.
The epoxy asphalt coating adopted by the anticorrosion process of the arc-shaped member meets the national standard, is similar to the color of a concrete pipe piece as much as possible after being doped with the pigment, and is coated in a multi-layer coating mode. The coating thickness is required to be uniform, the bonding is firm and tight, and the defects of falling, cracking, holes, imprecise coating compression joint and the like are not allowed.
The invention has the advantages and beneficial effects that:
1. because the external interference factors are uncertain, the embedded arc-shaped members at the lower part of the ballast bed and the detachable arc-shaped members at the upper part of the ballast bed are adopted to carry out reinforcement by stages, so that the corresponding positions can be selected according to the actual external interference to carry out reinforcement on the duct pieces, the reinforcement construction period is shortened, and the construction cost is greatly reduced.
2. According to the invention, the embedded arc-shaped component is adopted at the lower part of the track bed and is integrally cast with the track bed, so that if the shield needs to be reinforced after the subway is actually operated, the arc-shaped component at the upper part of the track bed is directly spliced with the embedded arc-shaped component at the lower part of the track bed to form a ring, the track bed can be prevented from being cut, drilled, chiseled and the like, tunnel diseases at the later stage are reduced, and the reliability and the safety of subway operation are improved.
3. The movable subway interval tunnel reinforcing method is adopted, namely the shield is reinforced by the detachable arc-shaped members on the upper portion of the track bed, after external interference factors are eliminated, the arc-shaped members on the upper portion of the track bed can be detached and moved to the next section for continuous reinforcement, only the detachable arc-shaped members on the upper portion of the track bed are operated, construction is rapid, damage to the existing shield and track bed structure is small, stability of the tunnel and safety of normal operation of trains are not affected, materials are recycled, and construction cost is saved.
4. According to the invention, the detachable arc-shaped component on the upper part of the ballast bed is discontinuously arranged along the shield segment in multiple longitudinal sections, a certain space is reserved to avoid the shield segment pre-embedded groove, equipment, pipeline supports and the like arranged on the channel, the arrangement of auxiliary equipment of the tunnel in the subway section is not influenced, and the superiority is obvious in the reinforcement of the shield in the subway tunnel section.
5. The arc-shaped member is longitudinally arranged in a staggered manner relative to the shield segment, so that the effect of strengthening the longitudinal connection rigidity of the shield segment can be achieved.
Drawings
FIG. 1 is a schematic view of a circular arc member according to the present invention;
FIG. 2 is a multi-segment assembly diagram of the shield single-ring segment reinforcing structure device of the present invention;
FIG. 3 is a schematic diagram of a spatial structure of a shield segment lining reinforcing structure device according to the present invention;
FIG. 4 is a schematic cross-sectional view of a shield zone of the present invention;
FIG. 5 is a schematic view of the general assembly process of the stage-by-stage movable reinforcing structure device for shield segments of the present invention;
wherein, figure a: schematic diagram of arc-shaped members embedded at lower part of ballast bed
And (b) figure: schematic diagram of forming integral ring structure by connecting and sealing circular arc-shaped component at upper part of ballast bed and embedded component at lower part of ballast bed
And (c) figure: the lower embedded members are longitudinally and continuously arranged in multiple sections, and the upper detachable members are longitudinally and discontinuously arranged
In the figure: 1-bolt holes are reserved at two ends of the arc-shaped component, 2-arc-shaped component D is embedded at the lower part of the track bed, and 3-arc-shaped component B is abutted to the bottom24-Top abutment of circular arc-shaped members B15-capping circular arc member F, 6-Top abutment circular arc member A17-base adjacent to the circular arc member A28-shield segment, 9-track bed, 10-pre-buried channel reserved space, 11-detachable circular arc member discontinuously arranged at the upper part of the track bed, 12-pre-buried circular arc member continuously arranged at the lower part of the track bed, 13-anchor bolt, 14-position of force applied by jack, 101-contour line of inner wall of circular arc member structure, 102-cable support, 103-lighting lamp, 104-distribution box and interval power box, 105-handrail, 106-interval evacuation inducing lighting lamp, 107-evacuation platform, 108-maintenance cable, 201-vehicle contour line, 202-vehicle boundary, 203-equipment boundary, 204-signal transponder, 205-rail surface, 301-wireless communication system cable, 302-signal machine cable and transmitter optical cable, 303-semaphore, 304-fire hose, 305-drain pipe, where A1，A2，B1，B2And F is called as a detachable circular arc-shaped component on the upper part of the track bed.
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1, the arc-shaped member can be a member made of composite materials such as Q235B and high-strength fibers and used for closely adhering to the lining of the shield segment, and is divided into a pre-embedded arc-shaped member 2 at the lower part of the track bed and detachable arc-shaped members (3, 4, 5, 6, 7) at the upper part of the track bed according to the reinforcement implementation step; the thickness of each section of the arc-shaped component is 30mm, the width of the embedded arc-shaped component 2 at the lower part of the track bed is 1.2m (the width is the same as that of the shield segment), and the width of the detachable arc-shaped component at the upper part of the track bed is 1.0m (an operation space is reserved for an embedded channel); bolt holes are reserved at two ends of the circular arc-shaped component, so that the circular arc-shaped component is connected and sealed to form a whole ring structure.
As shown in fig. 2, the reinforcing circular arc members for each ring are respectively composed of 6 segments: 2-embedding arc-shaped members D at the lower part of the track bed, 3-adjoining arc-shaped members B at the bottom24-Top abutment of circular arc-shaped members B15-capping circular arc member F, 6-Top abutment circular arc member A17-base adjacent to the circular arc member A2. Wherein the capping circular arc member (F) is at an angle of 40 DEG with respect to the tunnel center, and the adjoining members (A)1，B1，A2，B2) The angle of the embedded component (D) at the lower part of the track bed is 60 degrees relative to the center of the tunnel, and the embedded component (D) at the lower part of the track bed is 80 degrees relative to the center of the tunnel, so that the embedded component is just closed to form a whole ring structure.
As shown in fig. 3, the arc-shaped members 2 embedded at the lower part of the ballast bed are continuously arranged in multiple sections in the longitudinal direction in the range of the shield zone; circular arc component (3, 4, 5, 6, 7) can be dismantled on ballast bed upper portion and be receiving the external disturbance district section and be broken up along the vertical multisection section of shield segment and arrange, reserve certain space in order to avoid shield segment pre-buried recess and equipment, pipeline support etc. of installation on the channel. Wherein, at the position without equipment and pipeline arrangement, the longitudinal adjacent members can be connected by adopting steel plates and the like, so as to strengthen the connection and integrity between the members of each ring; after the external interference factors are eliminated, the part of the circular arc-shaped member above the track bed can be removed, and the part of the circular arc-shaped member is moved to the next section to be continuously reinforced.
As shown in fig. 4, the circumferential direction of the arc-shaped reinforcing member of the shield segment lining is spliced into the whole reinforcing structure device: firstly, embedding an arc-shaped component 2(D) at the lower part of a track bed, and integrally pouring the arc-shaped component and the track bed; when the upper part of the ballast bed is sealed and looped to be reinforced, the mounting sequence of the circular arc-shaped member blocks is anticlockwise, and the bottom right adjacent member block 3 is firstly mounted (B)2) Anchoring bolts can be fixed on the shield pipe sheet firstly, the bottom right side adjacent component block 3 is conveyed to the right by a simple manipulator, protection and fine adjustment are carried out by a hanging gourd, then the bolts penetrate through long round hole-shaped bolt preformed holes phi 16 of the bottom right side adjacent component block 3, and the arc-shaped component block 3(B2) is adjustably fixed on the concrete pipe sheet by nuts; installing top-adjoining circular arc-shaped members 4(B1), capped circular arc-shaped members 5(F) and top-adjoining circular arc-shaped members 6(A1) at preset positions by using a manipulator, simultaneously performing primary connection between the adjacent circular arc-shaped members by using bolts or gusset plates, and sequentially completing installation of the circular arc-shaped members in a counterclockwise direction; at the top, circular arc-shaped members 6 (A)1) Applying axial stress between the embedded arc-shaped members 2(D) at the lower part of the ballast bed by using a mechanical jack to tension the annular reinforcing structure device, tightly attaching the annular reinforcing structure device to the inner side of the concrete segment as much as possible, strictly ensuring that the inner limit of the lining is 5800mm through measurement, and finally abutting the arc-shaped members 7 (A) at the bottom2) Lofting installation should be performed according to the actual distance after the jack is subjected to axial stress. After all the arc-shaped components are completely installed, the bolts or the batten plates are screwed tightly to strengthen the annular connection, so that a good annular stress whole is formed inside, and the effect of reinforcing and supporting the tunnel is achieved;
fig. 5 is a schematic diagram of the general assembly process of the shield segment staged movable reinforcing structure device.
FIG. (a): the arc-shaped member 2 is embedded in the lower portion of the track bed and integrally poured with the concrete track bed, enough space is reserved at two ends of the member 2 to be in anchoring connection with the detachable arc-shaped members (3, 4, 5, 6 and 7) on the upper portion of the track bed, and the integrity of the track bed is prevented from being damaged;
FIG. (b): the detachable arc-shaped members (3, 4, 5, 6, 7) on the upper part of the track bed are connected and sealed with the embedded arc-shaped members 2 on the lower part of the track bed to form an integral ring structure, circumferentially adjacent members are connected in a reinforcing way by adopting gusset plate anchor bolts or bolts, the arc-shaped members are tightly attached to the inner arc surface of the shield segment as much as possible, and the members are connected with the shield segment by adopting anchoring bolts;
FIG. (c): the embedded arc-shaped members 2 at the lower part of the ballast bed are continuously arranged in multiple longitudinal sections, and the width of each section is 1.2m and is as wide as the shield segment; the detachable arc-shaped members (3, 4, 5, 6 and 7) on the upper part of the track bed are arranged longitudinally discontinuously, the width of each section is 1.0m, and a certain space (0.2m wide) is reserved to avoid the shield segment pre-embedded grooves and equipment, pipeline supports and the like arranged on the channels. Wherein, at the position without equipment and pipeline arrangement, the longitudinal adjacent members can be connected by steel plates and the like, so as to strengthen the connection and integrity between each ring of members. The arc-shaped members 2 embedded in the lower portion of the track bed and the arc-shaped members (3, 4, 5, 6 and 7) detachable from the upper portion of the track bed are longitudinally arranged in a staggered manner relative to the shield segments, namely, each arc-shaped member covers the circumferential joint of the shield segments, and the joints among the longitudinal arc-shaped members are arranged in the middle of the segments and can play a role in strengthening the longitudinal connection rigidity of the shield segments. Gaps between all detachable arc-shaped components (3, 4, 5, 6, 7) on the upper part of the ballast bed and shield segments adopt an epoxy grouting process, materials such as epoxy resin and the like are densely filled, and the arc-shaped components can be subjected to coating anti-corrosion treatment.
All the circular arc members are not connected in a welding mode, so that after external interference factors are eliminated, the circular arc members above the track bed can be detached and moved to the next section for continuous reinforcement.
The detachable circular arc-shaped members (3, 4, 5, 6 and 7) on the upper part of the ballast bed are connected with the shield segment through anchor bolts, the longitudinal distance between the bolts is 400mm, the circumferential distance between the bolts is 200mm, each ring is provided with 2 rows, and the bolts are locked with the circular arc-shaped members by nuts; the circular arc-shaped components are connected in the annular direction by adopting batten plates or bolts, and the batten plates can be made of steel plates with the thickness of 200mm multiplied by 300mm multiplied by 30 mm.
The coating adopted for the anticorrosion treatment of the coating of the arc-shaped member meets the national standard, the color of the coating is similar to that of the concrete pipe piece as much as possible after the pigment is doped, and the coating is carried out by adopting a multi-layer coating mode. The coating thickness is required to be uniform, the bonding is firm and tight, and the defects of falling, cracking, holes, imprecise coating compression joint and the like are not allowed.
The position of the anchor bolt needs to avoid hand holes, segment steel bars and the like, and the position of the anchor bolt needs to be properly adjusted when meeting, but the distance of avoiding the edge needs to be more than 100 mm; when the capping circular arc-shaped component 5(F) is installed, a chain block is needed to be used for protection.
The staged movable subway interval tunnel shield segment reinforcing structure has the following advantages that: the reinforcing method has the advantages that the reinforcing is implemented by stages by adopting the embedded arc-shaped members 2 at the lower part of the ballast bed and the detachable arc-shaped members (3, 4, 5, 6 and 7) at the upper part of the ballast bed, corresponding positions can be selected according to actual external interference to reinforce the duct pieces, the reinforcing construction period is shortened, and the construction cost is greatly reduced; according to the invention, the embedded arc-shaped component 2 is adopted at the lower part of the track bed and is integrally cast with the track bed, so that if the shield needs to be reinforced after the subway is actually operated, the detachable arc-shaped components (3, 4, 5, 6, 7) at the upper part of the track bed are directly spliced with the embedded arc-shaped component 2 at the lower part of the track bed to form a ring, so that the treatment of cutting, drilling, chiseling and the like on the track bed in the whole ring later reinforcing process can be avoided, the later-stage tunnel diseases are reduced, and the reliability and the safety of subway operation are improved; according to the invention, the detachable arc-shaped members (3, 4, 5, 6, 7) on the upper part of the ballast bed can be detached, can move according to adjacent construction changes to implement reinforcement, is quick to construct, and can be reused; according to the invention, the detachable arc-shaped component on the upper part of the ballast bed is arranged discontinuously in multiple longitudinal sections along the shield segment, so that the arrangement of auxiliary equipment of the tunnel in the subway section is not influenced.
The foregoing descriptions of specific embodiments of the present invention are presented in conjunction with the accompanying drawings to facilitate a person of ordinary skill in the art to understand and practice the present invention. Therefore, the present invention is not limited to the embodiments herein, and those skilled in the art should make improvements and modifications within the technical scope of the present invention as claimed in the present invention based on the disclosure of the present invention.
Claims (8)
1. The utility model provides a sectional movable subway interval tunnel shield constructs section of jurisdiction reinforced structure device which characterized in that: the shield segment integrated reinforcement structure device comprises a track bed lower embedded circular arc-shaped component (2) and track bed upper detachable circular arc-shaped components (3, 4, 5, 6, 7), wherein the track bed lower embedded circular arc-shaped component (2) is a section of circular arc-shaped component, the track bed upper detachable circular arc-shaped components (3, 4, 5, 6, 7) are formed by splicing a plurality of sections of circular arc-shaped components, the track bed lower embedded circular arc-shaped component (2) and the track bed upper detachable circular arc-shaped components (3, 4, 5, 6, 7) are connected end to form an integral ring structure, a reserved plug-in hole is formed in the end part of each circular arc-shaped component, and adjacent circular arc-shaped components are spliced and connected through the reserved holes and the; the arc-shaped component is matched with the shape of a standard subway tunnel shield segment, is tightly attached to the inner surface of the shield segment and can cover the joint part of the shield segment; a reinforcing bolt is connected between the arc-shaped member and the shield pipe sheet ring; the width of the embedded arc-shaped component (2) at the lower part of the ballast bed is the same as that of the shield segment, and the embedded arc-shaped component is continuously arranged in multiple segments in the longitudinal direction in the shield segment interval range; the width of the detachable arc-shaped component (3, 4, 5, 6, 7) on the upper part of the ballast bed is smaller than that of the shield segment, the external interference section is discontinuously arranged along multiple longitudinal segments of the shield segment, and a certain space is reserved to avoid the shield segment pre-buried groove and equipment, pipeline supports and the like arranged on the channel;
the term "staged" means: before the concrete track bed is poured, pre-embedding an arc-shaped member (2) at the lower part of the track bed between a shield segment and the track bed in the whole length of a reinforcing section of the subway shield tunnel in advance, and then integrally pouring the pre-embedded arc-shaped member (2) at the lower part of the track bed and the concrete track bed; after the tunnel shield construction is finished, detachable arc-shaped members (3, 4, 5, 6 and 7) at the upper part of the track bed are arranged at the part above the track bed of the section subjected to external interference and are connected and sealed with pre-embedded arc-shaped members (2) at the lower part of the track bed to form a whole ring structure, so that the reinforcing effect is achieved;
the term "mobile" refers to: the detachable arc-shaped component on the upper part of the track bed is adopted to reinforce shield segments above the track bed in a section which is interfered by the outside, after external interference factors are eliminated, the detachable arc-shaped component (3, 4, 5, 6, 7) on the upper part of the track bed above the track bed can be detached and moved to the next section to be continuously reinforced, and the section which is not interfered by the outside does not need to be reinforced.
2. The staged movable subway section tunnel shield segment reinforcement structure device according to claim 1, wherein said arc-shaped members are divided into a pre-embedded arc-shaped member (2) at the lower part of the track bed and a detachable arc-shaped member (3, 4, 5, 6, 7) at the upper part of the track bed according to said implementation stage, said arc-shaped members can be formed by multi-segment annular splicing of parts formed by compounding metal, high-strength fiber materials and the like, and are arranged along the inner arc surface of the shield segment, and the annular members are connected end to form an integral annular reinforcement structure device; circular arc component, the hoop adopts batten plate crab-bolt or bolt to strengthen between adjacent component and connects, corresponds the anchor position and is in circular arc component both ends reserve 3 ~ 5 bolt hole sites.
3. The staged movable subway section tunnel shield segment reinforcing structure device according to claim 1, wherein an operation space of about 10cm is reserved at two ends of the embedded arc-shaped member (2) at the lower part of the track bed relative to the whole track bed, so that the damage to the integrity of the track bed when the arc-shaped member (3, 4, 5, 6, 7) is connected with the detachable arc-shaped member at the upper part of the track bed through bolts is avoided.
4. The staged movable subway section tunnel shield segment reinforcing structure device as claimed in claim 1, wherein said arc-shaped members (2) embedded in the lower portion of the track bed have a width of 1.2 m; the width of the detachable circular arc-shaped components (3, 4, 5, 6, 7) on the upper part of the track bed is within 1.0 m.
5. A staged movable subway section tunnel shield segment reinforcement structure device as claimed in claim 1, wherein said upper portion of said ballast bed is detachable from circular arc members (3, 4, 5, 6, 7), and at the position where there is no facility or pipeline, the longitudinal adjacent members can be connected by steel plates, etc. to strengthen the connection and integrity between each ring of members, and said upper portion of said ballast bed is detachable from circular arc members (3, 4, 5, 6, 7), movable and reusable.
6. The staged movable subway section tunnel shield segment reinforcing structure device according to claim 1, wherein said arc-shaped members (2) embedded in the lower portion of the track bed and said arc-shaped members (3, 4, 5, 6, 7) detachable in the upper portion of the track bed are arranged in staggered manner with respect to the shield segments in the longitudinal direction, that is, each arc-shaped member covers the circumferential joint of the shield segment, and the joint between the longitudinal arc-shaped members is in the middle of the shield segment, so that the longitudinal rigidity of the shield segment can be enhanced.
7. The staged movable subway section tunnel shield segment reinforcing structure device as claimed in claim 1, wherein said arc-shaped member is tightly attached to the inner arc surface of the shield segment, the arc-shaped member is connected with the shield segment by bolts, the positions of said bolts need to avoid hand holes, segment steel bars and the like, and the bolts need to be properly adjusted when meeting, but the distance of avoiding the edge needs to be larger than 100 mm.
8. The device for reinforcing a tunnel shield segment structure between subway sections according to claim 1, wherein the arc-shaped member is coated with a paint for corrosion protection, the paint is in accordance with the national standard, the color of the paint is similar to that of the concrete segment as much as possible after the paint is added, and the paint is coated by means of multilayer coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011081380.8A CN112065456A (en) | 2020-10-12 | 2020-10-12 | Stage-movable subway interval tunnel shield segment reinforcing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011081380.8A CN112065456A (en) | 2020-10-12 | 2020-10-12 | Stage-movable subway interval tunnel shield segment reinforcing structure |
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| CN112065456A true CN112065456A (en) | 2020-12-11 |
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| CN202011081380.8A Pending CN112065456A (en) | 2020-10-12 | 2020-10-12 | Stage-movable subway interval tunnel shield segment reinforcing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266395A (en) * | 2021-07-01 | 2021-08-17 | 上海市城市建设设计研究总院（集团）有限公司 | Shield tunnel pipeline support connecting device and anti-falling device in earthquake high-intensity area |
-
2020
- 2020-10-12 CN CN202011081380.8A patent/CN112065456A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266395A (en) * | 2021-07-01 | 2021-08-17 | 上海市城市建设设计研究总院（集团）有限公司 | Shield tunnel pipeline support connecting device and anti-falling device in earthquake high-intensity area |
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