CN110295924B - Shield tunnel reinforcing structure based on H-shaped steel plate and construction method - Google Patents
Shield tunnel reinforcing structure based on H-shaped steel plate and construction method Download PDFInfo
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- CN110295924B CN110295924B CN201910439289.XA CN201910439289A CN110295924B CN 110295924 B CN110295924 B CN 110295924B CN 201910439289 A CN201910439289 A CN 201910439289A CN 110295924 B CN110295924 B CN 110295924B
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- shaped steel
- steel plate
- reinforcing
- tunnel
- segment
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- 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
Abstract
The invention relates to a shield tunnel reinforcing structure based on an I-shaped steel plate and a construction method, wherein the reinforcing structure comprises the I-shaped steel plate adhered to the inner cambered surface of a shield segment in a region to be reinforced, the I-shaped steel plate is composed of a plurality of I-shaped steel plate units arranged side by side, each I-shaped steel plate unit is integrally formed by a flange, a top plate, a web plate and a bottom plate, the adjacent I-shaped steel plate units are formed at one time or are connected and formed by flange welding or connecting pieces, the flanges are arranged around the top plate, the web plate and the bottom plate are mutually and vertically arranged to form a closed square duct, and the arrangement direction of the flanges is along the circumferential direction of a tunnel. Compared with the prior art, the invention has the advantages of various reinforcement modes, obvious reinforcement effect, full grouting, high rigidity and the like.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a shield tunnel reinforcing structure based on an I-shaped steel plate and a construction method.
Background
The shield tunnel is formed by connecting duct pieces through bolts, and along with the continuous increase of the operation years, adverse conditions such as stratum conditions, vehicle operation, loading and unloading of surrounding environments and the like are included, so that the phenomena of duct piece structural deformation, cracking, concrete stripping, water leakage and the like occur on the part of the shield tunnel, and if reinforcement treatment is not timely carried out, the driving safety is endangered. The conventional shield tunnel repairing and reinforcing technology comprises an inner Zhang Gangjuan reinforcing method, an adhesive composite cavity reinforcing method, a lateral grouting reinforcing method and the like, but the existing method has the problems of high manufacturing cost, complex construction, long construction period and limited reinforcing effect.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a shield tunnel reinforcing structure based on an I-shaped steel plate and a construction method.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a shield tunnel reinforced structure based on worker's shape steel sheet, this reinforced structure is including the worker's shape steel sheet of bonding in the intrados department of shield segment in waiting the reinforced region, worker's shape steel sheet constitute by polylith worker's shape steel sheet unit that sets up side by side, every worker's shape steel sheet unit is by edge of a wing, roof, web and bottom plate integrated into one piece, adjacent worker's shape steel sheet unit one shot forming or through edge of a wing welding or connecting piece connection shaping, the edge of a wing set up around the roof, web and bottom plate mutually perpendicular set up and constitute closed square duct, its direction of arrangement is along tunnel hoop.
Filling holes are preset in the bottom plate, and fillers are filled in the closed square pore channels through the filling holes.
The flange is mutually bonded with the inner cambered surface of the shield segment in the region to be reinforced through an adhesive, an expansion bolt hole is formed in the flange, and the adhesive is solvent-free modified epoxy resin adhesive steel pouring glue or silica gel.
The filler is micro-expansion cement mortar or micro-expansion concrete.
The reinforcing form of the reinforcing structure comprises a joint local reinforcing form, a full-section equal-rigidity reinforcing form and a full-section variable-rigidity reinforcing form.
When the whole state of the segment ring is not deformed and only opens or cracks at the local joint position, the local joint reinforcement mode is selected, and a single or a plurality of I-shaped steel plates are adopted to be arranged at the position of the shield segment joint in the region to be reinforced and are fixed through expansion bolts on the flanges.
When the segment ring is deformed integrally and the segment body is seriously damaged such as water leakage, sand leakage, large convergence deformation and the like, the reinforcing form is selected to be a full-section equal-rigidity reinforcing form, and the H-shaped steel plates are arranged along the circumferential direction of the tunnel in a full circle and are fixed through expansion bolts on the flanges.
When the segment ring is deformed integrally, damage is concentrated at the segment joint, the segment ring body is reinforced in a full-section variable-rigidity reinforcing mode when no obvious disease exists, a plurality of I-shaped steel plates are arranged along the circumferential direction of the tunnel, and two adjacent I-shaped steel plates are reinforced in a steel bonding mode, so that the circumferential full-circle arrangement of the tunnel is formed.
A construction method of a shield tunnel reinforcing structure based on an I-shaped steel plate comprises the following steps:
step 1: the tunnel safety evaluation is carried out according to the measurement result of the deformation condition of the shield tunnel, specifically:
according to the conditions of cracking, staggering, joint opening, segment ring deformation, joint leakage and silt leakage of the shield tunnel segment, carrying out tunnel structure safety evaluation to obtain whether the corresponding evaluation section belongs to local damage or integral damage or general slight damage or serious damage;
step 2: selecting a shield tunnel reinforcement scheme according to a safety evaluation result, wherein the reinforcement scheme comprises a joint local reinforcement scheme, a full-section equal-rigidity reinforcement scheme and a full-section variable-rigidity reinforcement scheme, and simultaneously determining reinforcement rigidity;
step 3: manufacturing an I-shaped steel plate according to the determined reinforcement rigidity, presetting filling holes in the I-shaped steel plate, spreading the web plate of the I-shaped steel plate along the circumferential direction of the tunnel, and combining the cambered surface of the I-shaped steel plate with the inner cambered surface of the shield tunnel segment;
step 4: polishing the shield segment in the region to be reinforced by adopting an angle grinder, exposing a fresh surface and removing surface dust, and polishing and roughening the I-shaped steel plate by adopting the angle grinder;
step 5: coating an adhesive at the contact position of the shield segment in the region to be reinforced and the H-shaped steel plate, and pressurizing the H-shaped steel plate unit to ensure that the adhesive overflows from the periphery of the H-shaped steel plate;
step 6: performing block construction according to the size of the reinforcing area, repeating the step 5, and connecting all the I-shaped steel plates into a whole;
step 7: filling of the filler is performed through filling holes preset in the I-shaped steel plate.
In the reinforcing process of the step 5 and the step 7, the falling off of the reinforcing member in the reinforcing process is avoided by additionally arranging a fixing facility, so that the construction safety in the reinforcing process is ensured, and the fixing facility is an expansion bolt or a chemical bolt.
Compared with the prior art, the invention has the following advantages:
1. the reinforcing mode is flexible, according to the evaluation result, the characteristic of the rigidity of the segment ring of the shield tunnel is combined, the rigid weak point (segment joint) is locally reinforced by adopting the I-shaped steel plate with larger rigidity, the segment body is correspondingly selected to be not reinforced, the mode of reinforcing the steel plate with smaller rigidity or reinforcing the segment ring integrally is adopted according to the damage degree, when the integral state of the segment ring is better, only the local joint position is opened or cracked, the mode of locally reinforcing the segment steel plate joint can be adopted, when the segment ring is integrally deformed, but damage is concentrated on the segment joint, and when the segment ring body has no obvious damage, the full-section rigidity-changing reinforcing method can be adopted; when the segment ring is deformed integrally and the segment body has serious diseases, a full-section equal-rigidity reinforcing method is adopted.
2. The arc of the side of the segment, which is clung to the shield tunnel, of the H-shaped steel plate is consistent with the arc surface in the segment ring along the segment ring direction, and the bottom of each closed square duct along the tunnel axis direction is a plane, so that the H-shaped steel plate has enough contact area to be convenient to bond with the segment structure.
3. According to the invention, the square wavy reinforcing structure is formed in the circumferential direction of the duct piece by adopting the H-shaped steel plate, so that the structural rigidity is effectively increased, and meanwhile, the H-shaped steel plate is in full contact with the duct piece, so that the effective bonding between the H-shaped steel plate and the duct piece can be ensured, and the reinforcing effect is obviously improved.
4. The H-shaped steel plate adopts the closed square pore canal, can accommodate more grouting, ensures that the grouting is more full, effectively increases the compression, bending and shearing characteristics of the H-shaped steel plate, and further, as the top plate with the closed top is adopted, the contact area with the shield tunnel duct piece is increased, and the rigidity is effectively improved.
Drawings
FIG. 1 is a schematic cross-sectional view of an I-shaped steel plate.
Fig. 2 is a structural cross-sectional view of an h-shaped steel plate reinforced shield tunnel.
Fig. 3 is a plan development view of the h-shaped steel plate.
Fig. 4 is a cross-sectional view of the segment ring joint of the shield tunnel partially reinforced by the h-shaped steel plate.
Fig. 5 is a cross-sectional view of an h-shaped steel plate for full-section variable stiffness reinforcement.
Fig. 6 is a cross-sectional view of an h-shaped steel plate for full-section equal-rigidity reinforcement.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Examples
The invention is further described below with reference to the specific illustrations in order to make the technical means, the inventive features, the achieved objects and the effects of the invention easy to understand.
As shown in fig. 1-3, the invention provides a shield tunnel reinforcing structure based on an H-shaped steel plate, which comprises an H-shaped steel plate adhered to the inner cambered surface of a shield segment in a region to be reinforced, wherein the H-shaped steel plate is composed of a plurality of H-shaped steel plate units arranged side by side, each H-shaped steel plate unit is composed of an integrally formed flange, a top plate, a web plate and a bottom plate, the adjacent H-shaped steel plate units are connected through flange welding or connecting pieces, the top plate, the web plate and the bottom plate form a closed square duct, the arrangement direction of the closed square duct is along the circumferential direction of a tunnel, filling holes are preset in the bottom plate, fillers are filled in the square duct through the filling holes, the flanges are adhered to the inner cambered surface of the shield segment in the region to be reinforced through an adhesive, expansion bolt holes are formed in the inner cambered surface of the shield segment, the adhesive is solvent-free modified epoxy resin adhesive steel pouring glue or silica gel, and the fillers are micro-expansion cement mortar or micro-expansion concrete.
The invention provides a construction method for reinforcing a shield tunnel by an I-shaped steel plate, which comprises the following steps:
s1, measuring deformation conditions of a shield tunnel, and evaluating the safety of the tunnel according to a measurement result, wherein the method specifically comprises the following steps: according to the conditions of cracking, staggering, joint opening, segment ring deformation, joint leakage and silt leakage of the shield tunnel segment, carrying out tunnel structure safety evaluation to obtain whether the corresponding evaluation section belongs to local damage or integral damage or general slight damage or serious damage;
s2, selecting a shield tunnel reinforcement scheme according to the evaluation result of the S1, wherein the reinforcement scheme comprises joint local reinforcement, full-section equal-rigidity reinforcement and full-section variable-rigidity reinforcement, and simultaneously determining reinforcement rigidity;
s3, manufacturing an H-shaped steel plate unit according to the reinforcement rigidity determined in the S2, presetting filling holes on the H-shaped steel plate unit according to requirements, and spreading webs of the H-shaped steel plate unit along the circumferential direction of the tunnel, wherein the cambered surface of the H-shaped steel plate is consistent with the inner cambered surface of the shield tunnel segment;
s4, polishing the shield segment in the area to be reinforced by adopting an angle grinder, exposing a fresh surface, removing surface dust, and polishing and roughening the I-shaped steel plate by adopting the angle grinder;
s5, coating an adhesive at the contact position of the shield segment in the region to be reinforced and the I-shaped steel plate, wherein the adhesive is solvent-free modified epoxy resin type steel pouring adhesive or silica gel, and pressurizing the I-shaped steel plate to ensure that the adhesive overflows from the periphery of the I-shaped steel plate, and temporary fixing facilities are required to be added in the construction process so as to prevent a reinforcing member from falling off in the reinforcing process. The pipe piece fixing facilities including expansion bolts and chemical bolts can be added according to the requirements;
s6, carrying out block construction according to the size of the reinforcing area, repeating S5, and connecting all the I-shaped steel plates into a whole in a welding or connecting piece mode.
S7, filling a filler which is micro-expansion cement mortar or micro-expansion concrete through a filling hole preset in the I-shaped steel plate according to the requirement. Temporary fixing facilities are needed to be added in the construction process, so that the falling off of the reinforcing members in the reinforcing process is avoided.
Example 1:
according to the evaluation result, the whole state of the segment ring is good, only the partial joint position is opened or cracked, and the partial reinforcement scheme of the segment ring joint of the shield tunnel is determined, as shown in fig. 4. Polishing the region to be reinforced of the shield segment by adopting an angle grinder, exposing a fresh surface, cleaning dust, and polishing and roughening the I-shaped steel plate by adopting the angle grinder; coating an adhesive at the contact position of the shield segment and the I-shaped steel plate in the region to be reinforced, pressurizing the I-shaped steel plate to ensure that the adhesive overflows from the periphery, and adding steel plate fixing facilities such as expansion bolts or chemical bolts and the like according to the requirement; carrying out block construction and welding or adopting a connecting piece to connect the steel plates into a whole; filling of the filler is performed through filling holes preset in the I-shaped plate according to requirements.
Example 2:
according to the evaluation result, the segment ring is integrally deformed, but the defects are concentrated on the segment joint, the segment ring body has no obvious defects, and the full-section variable stiffness reinforcement method is carried out by adopting the segment ring of the shield tunnel, as shown in fig. 5. Polishing the region to be reinforced of the shield segment by adopting an angle grinder, exposing a fresh surface, cleaning dust clearly, and polishing and roughening the I-shaped steel plate and the steel plate by adopting the angle grinder; coating an adhesive at the contact position of the shield segment and the I-shaped steel plate in the region to be reinforced, pressurizing the I-shaped steel plate to ensure that the adhesive overflows from the periphery, and adding steel plate fixing facilities such as expansion bolts or chemical bolts and the like according to the requirement; carrying out block construction and welding or adopting a connecting piece to connect the steel plates into a whole; filling of the filler is performed through filling holes preset in the I-shaped plate according to requirements.
Example 3:
according to the evaluation result, the segment ring is integrally deformed, the segment body is seriously damaged, and the full-section equal-rigidity reinforcing method of the segment ring of the shield tunnel is adopted, as shown in fig. 6. Polishing the region to be reinforced of the shield segment by adopting an angle grinder, exposing a fresh surface, cleaning dust clearly, and polishing and roughening the I-shaped steel plate by adopting the angle grinder; coating an adhesive at the contact position of the shield segment and the I-shaped steel plate in the region to be reinforced, pressurizing the I-shaped steel plate to ensure that the adhesive overflows from the periphery, and adding steel plate fixing facilities such as expansion bolts or chemical bolts and the like according to the requirement; carrying out block construction and welding or adopting a connecting piece to connect the steel plates into a whole; filling of the filler is performed through filling holes preset in the I-shaped plate according to requirements.
Claims (1)
1. The construction method of the shield tunnel reinforcing structure based on the H-shaped steel plates is characterized in that the reinforcing structure comprises H-shaped steel plates adhered to the inner cambered surface of a shield segment in a region to be reinforced, each H-shaped steel plate is composed of a plurality of H-shaped steel plate units arranged side by side, each H-shaped steel plate unit is integrally formed by flanges, a top plate, a web plate and a bottom plate, adjacent H-shaped steel plate units are formed at one time or are connected and formed by flange welding or connecting pieces, the flanges are arranged around the top plate, and the top plate, the web plate and the bottom plate are mutually perpendicular to form a closed square duct, and the arrangement direction of the closed square duct is along the circumferential direction of a tunnel;
filling holes are preset in the bottom plate, and fillers are filled in the closed square pore channels through the filling holes;
the flange is mutually bonded with the inner cambered surface of the shield segment in the region to be reinforced through an adhesive, an expansion bolt hole is formed in the flange, and the adhesive is solvent-free modified epoxy resin adhesive steel pouring glue or silica gel;
the filler is micro-expansion cement mortar or micro-expansion concrete;
the reinforcing form of the reinforcing structure comprises a joint local reinforcing form, a full-section equal-rigidity reinforcing form and a full-section variable-rigidity reinforcing form;
when the whole segment ring is free from deformation and only opens or cracks at the local joint position, selecting a joint local reinforcing mode, arranging a single or a plurality of H-shaped steel plates at the position of the shield segment joint in the region to be reinforced, and fixing through expansion bolts on the flanges;
when the duct piece ring is deformed integrally and the duct piece body is large in water leakage, sand leakage and convergence deformation, the reinforcing mode is selected to be a full-section equal-rigidity reinforcing mode, and the I-shaped steel plates are arranged along the circumferential direction of the tunnel in a full circle and are fixed through expansion bolts on the flanges;
when the segment ring is deformed integrally, but damage is concentrated at the segment joint, the segment ring body is reinforced in a full-section variable-rigidity reinforcing mode when no obvious disease exists, a plurality of I-shaped steel plates are arranged along the circumferential direction of the tunnel, and two adjacent I-shaped steel plates are reinforced in a steel bonding mode, so that the circumferential full-circle arrangement of the tunnel is formed;
the construction method comprises the following steps:
step 1: carrying out tunnel safety evaluation according to the measurement result of the deformation condition of the shield tunnel;
step 2: selecting a shield tunnel reinforcement scheme according to a safety evaluation result, wherein the reinforcement scheme comprises a joint local reinforcement scheme, a full-section equal-rigidity reinforcement scheme and a full-section variable-rigidity reinforcement scheme, and simultaneously determining reinforcement rigidity;
step 3: manufacturing an I-shaped steel plate according to the determined reinforcement rigidity, presetting filling holes in the I-shaped steel plate, spreading the web plate of the I-shaped steel plate along the circumferential direction of the tunnel, and combining the cambered surface of the I-shaped steel plate with the inner cambered surface of the shield tunnel segment;
step 4: polishing the shield segment in the region to be reinforced by adopting an angle grinder, exposing a fresh surface and removing surface dust, and polishing and roughening the I-shaped steel plate by adopting the angle grinder;
step 5: coating an adhesive at the contact position of the shield segment in the region to be reinforced and the H-shaped steel plate, and pressurizing the H-shaped steel plate unit to ensure that the adhesive overflows from the periphery of the H-shaped steel plate;
step 6: performing block construction according to the size of the reinforcing area, repeating the step 5, and connecting all the I-shaped steel plates into a whole;
step 7: filling filler through filling holes preset in the I-shaped steel plate;
in the reinforcing process of the step 5 and the step 7, the falling off of the reinforcing member in the reinforcing process is avoided by additionally arranging a fixing facility, so that the construction safety in the reinforcing process is ensured, and the fixing facility is an expansion bolt or a chemical bolt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910439289.XA CN110295924B (en) | 2019-05-24 | 2019-05-24 | Shield tunnel reinforcing structure based on H-shaped steel plate and construction method |
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| CN201910439289.XA CN110295924B (en) | 2019-05-24 | 2019-05-24 | Shield tunnel reinforcing structure based on H-shaped steel plate and construction method |
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| CN110295924A CN110295924A (en) | 2019-10-01 |
| CN110295924B true CN110295924B (en) | 2023-09-26 |
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| CN112388255A (en) * | 2020-11-06 | 2021-02-23 | 安徽四建控股集团有限公司 | Automatic welding method based on T-shaped steel plate for bus stop board |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089335A (en) * | 2006-06-16 | 2007-12-19 | 北京特希达科技有限公司 | Prestress rope anti-bend reinforced concrete structure and its reinforing method |
| CN103643965A (en) * | 2013-12-16 | 2014-03-19 | 上海市基础工程集团有限公司 | Repair and reinforcement construction methods for segments in formed tunnel |
| CN103775106A (en) * | 2014-01-27 | 2014-05-07 | 华南理工大学 | Structure for reinforcing tunnel by utilizing arch rings and method for reinforcing tunnel |
| CN204212781U (en) * | 2014-11-12 | 2015-03-18 | 中铁六局集团有限公司 | The secondary seal structure at hole in shield-tunneling construction |
| CN104989432A (en) * | 2015-05-29 | 2015-10-21 | 上海隧道工程有限公司 | Construction method for opening section steel grouting to reinforce tunnel |
| CN107060787A (en) * | 2017-06-19 | 2017-08-18 | 湖南大学 | A kind of reinforcement means of duct pieces of shield tunnel |
| CN109026061A (en) * | 2018-09-06 | 2018-12-18 | 上海市机械施工集团有限公司 | Form the bracing means and its installation method of shield duct piece in tunnel |
-
2019
- 2019-05-24 CN CN201910439289.XA patent/CN110295924B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089335A (en) * | 2006-06-16 | 2007-12-19 | 北京特希达科技有限公司 | Prestress rope anti-bend reinforced concrete structure and its reinforing method |
| CN103643965A (en) * | 2013-12-16 | 2014-03-19 | 上海市基础工程集团有限公司 | Repair and reinforcement construction methods for segments in formed tunnel |
| CN103775106A (en) * | 2014-01-27 | 2014-05-07 | 华南理工大学 | Structure for reinforcing tunnel by utilizing arch rings and method for reinforcing tunnel |
| CN204212781U (en) * | 2014-11-12 | 2015-03-18 | 中铁六局集团有限公司 | The secondary seal structure at hole in shield-tunneling construction |
| CN104989432A (en) * | 2015-05-29 | 2015-10-21 | 上海隧道工程有限公司 | Construction method for opening section steel grouting to reinforce tunnel |
| CN107060787A (en) * | 2017-06-19 | 2017-08-18 | 湖南大学 | A kind of reinforcement means of duct pieces of shield tunnel |
| CN109026061A (en) * | 2018-09-06 | 2018-12-18 | 上海市机械施工集团有限公司 | Form the bracing means and its installation method of shield duct piece in tunnel |
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