CN104989432B - The construction method in opening shaped steel consolidation by grouting tunnel - Google Patents

The construction method in opening shaped steel consolidation by grouting tunnel Download PDF

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Publication number
CN104989432B
CN104989432B CN201510290977.6A CN201510290977A CN104989432B CN 104989432 B CN104989432 B CN 104989432B CN 201510290977 A CN201510290977 A CN 201510290977A CN 104989432 B CN104989432 B CN 104989432B
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China
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shaped steel
opening shaped
intrados
opening
tunnel
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CN201510290977.6A
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CN104989432A (en
Inventor
吴惠明
王如路
蒋首超
朱妍
李刚
王旋东
张荣辉
吴列成
马芹
李芹峰
柳献
李迅
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SHANGHAI RAIL TRANSIT MAINTENANCE SUPPORT Co Ltd
Shanghai Tunneling Shield Engineering Co Ltd
Tongji University
Shanghai Tunnel Engineering Co Ltd
Original Assignee
SHANGHAI RAIL TRANSIT MAINTENANCE SUPPORT Co Ltd
Shanghai Tunneling Shield Engineering Co Ltd
Tongji University
Shanghai Tunnel Engineering Co Ltd
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Application filed by SHANGHAI RAIL TRANSIT MAINTENANCE SUPPORT Co Ltd, Shanghai Tunneling Shield Engineering Co Ltd, Tongji University, Shanghai Tunnel Engineering Co Ltd filed Critical SHANGHAI RAIL TRANSIT MAINTENANCE SUPPORT Co Ltd
Priority to CN201510290977.6A priority Critical patent/CN104989432B/en
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Abstract

The invention provides a kind of construction method in the shaped steel consolidation by grouting tunnel that is open, comprise the following steps:(1) tunnel deformation situation is measured first, according to measurement result, makes multiple opening shaped steel units, the intrados that the shape for the shaped steel unit that is open is to be reinforced with shield duct piece matches;(2) the construction opening shaped steel on shield duct piece intrados to be reinforced:Sequentially multiple opening shaped steel units are interfixed concatenation, to form opening shaped steel, the shaped steel that is open is internally formed a hollow circular arc tube passage;(3) multiple fixedly connected parts are provided, so that each opening shaped steel unit is fixed on shield duct piece intrados to be reinforced respectively;(4) filling hole is set on opening shaped steel, filler is fed into by filling hole.Have the characteristics that consolidation effect is good, cost is low, short time limit, high with type when carrying out consolidation process to former tunnel structure.

Description

The construction method in opening shaped steel consolidation by grouting tunnel
Technical field
The invention belongs to technical field of buildings, is related to the construction method that a kind of tunnel structure is reinforced, and more particularly to one kind is opened The construction method in shape of the mouth as one speaks steel consolidation by grouting tunnel.
Background technology
With the high speed development of urban construction, utilization of the capital construction to the underground space is growing day by day, and tunnel the more is built the more more, However, while tunnel construction is scored achievements, tunnel in some operation because service life is continuously increased, in addition geology because The adverse effects such as element, part overloading, environment and the improper excavation of circuit periphery Deep Foundation Pit, and guarded drainage facility are old Change so that phenomena such as regional area Structural Test of Tunnel Segments deforms and ftractureed, peels off, if deformation further increase, will jeopardize Traffic safety, it is forced to close traffic sometimes, carries out Disease Treatment.Countries in the world will consume huge fund and be used to reinforce damaged tunnel every year, To ensure safety.Therefore, a kind of inexpensive, efficient tunnel reinforcement measure of invention, just becomes extremely important.It is presently used for The method of tunnel reinforcement mainly has:
First, affixing steel plate reinforcement
Affixing steel plate reinforcement is the steel plate that certain size is cut into according to design requirement, using special weight lifting arm, in tunnel Segmentation installation steel plate on the inside of tunnel segment structure, then fixed respectively with expansion bolt, each steel plate is then welded into one using electric welding Body, formed and the basically identical steel loop of tunnel inner wall shape, finally, the reperfusion structure glue in the gap of steel loop and tunnel segment structure (such as epoxy resin).
The engineering method is had been used in the subway tunnel structure reinforcing of operation, but some disadvantages are also exposed in practice process, As steel plate is conducted oneself with dignity, excessive, special weight lifting equipment need to enter to appear on the scene over long distances, weld seam is more, welding quality fluctuation is big, naked light unwell complete, steel The post-grouting of plate and section of jurisdiction bond official post consolidation effect have a greatly reduced quality, corrosion of steel structure problem and it is long in time limit, reinforce high cost, These problems hinder promoting the use of for the method.
Two, Strengthened By Cfrp Sheet methods
Carbon cloth is a kind of unidirectional carbon reinforcing product, and intensity is high, and density is small, thickness of thin, does not increase reinforcing substantially Member dead weight and sectional dimension, this reinforcement means have the advantages of convenient transportation, quick construction, can for tunnel reinforcement To significantly improve structural strength, thus the reinforcing field of building structure has been widely used in it, carbon cloth reinforced construction The quality of method, reliability of the carbon cloth to strengthening member is affected, and determine the safe and reliable weight of whole reinforcing engineering Want factor.
But when to the reinforcing of the subway tunnel structure of operation, fully whether solidification is one and can not be ignored binding agent Problem, the binding agent currently used for structural strengthening are all normal temperature cures, and 2-3 hours finger touches solidification, solidified within 1-7 days 100%, i.e., viscous Knot agent, which will reach 100% intensity, at least needs the time of more than 24 hours, but operated subway the characteristics of, be that can only utilize ground The 3-4 hours that iron night stops transport are constructed.Therefore, before binding agent does not also reach intensity, subway is run again, vibration Effect make binding agent be difficult to thoroughly solidify, so as to have a strong impact on the effect of structural strengthening.Also, carbon fiber has conduction Property, the complicated power supply net-fault system in tunnel is readily accessed, causes electric shock or short circuit accident.
Three, composite cavity method for strengthening
Composite cavity component, including cavity body, composite layer, injected hole, steam vent, bolt hole and filler.Chamber The shape of body body is matched with reinforcing face, and one or more tubing is combined into cavity body, and cavity body surface is set There is composite layer, composite layer is made up of resin and fiber, perfusion filler in cavity body.Cavity body is metal tube Or non-metallic pipe, such as steel pipe, plastic tube, composite material tube.Composite cavity component have it is in light weight, be readily transported, construct it is fast The advantages that prompt.Composite cavity outsourcing composite passes through the composite systems such as vacuum, heating, RTM or hand paste by resin and fiber Make technique to be formed in housing surface, processing technology is complicated, and cost is high, and some composite material compositions are conductive, easily Contact tunnel power network, cause to get an electric shock or short circuit, meanwhile, outsourcing composite cause cavity body and tunnel structure with type Difference, consolidation effect can be also influenceed, and Surface coating composite is to tunnel bearing capacity increasing action unobvious.
The content of the invention
The defects of to overcome present in prior art, it is an object of the invention to provide one kind opening shaped steel consolidation by grouting tunnel The construction method in road, solves big, perishable, mechanization dependence height of conducting oneself with dignity present in prior art, and binding agent is not abundant Solidification, and easily get an electric shock or short circuit, consolidation effect is poor, cost is high, with type is poor, the problem such as long in time limit.
A kind of construction method in the shaped steel consolidation by grouting tunnel that is open, including:
(1) tunnel deformation situation is measured, according to measurement result, makes multiple opening shaped steel units, the opening The shape of the shaped steel unit intrados to be reinforced with shield duct piece matches;
(2) the construction opening shaped steel on shield duct piece intrados to be reinforced:Sequentially by multiple opening shaped steel units Concatenation interfix to form the opening shaped steel that ring sets the intrados, the opening shaped steel is internally formed hollow arc tube and led to Road, the opening shaped steel unit are fixed on shield duct piece intrados to be reinforced by the fixedly connected part of offer;
(3) filler is fed into by the circular arc tube passage by the filling hole set on the opening shaped steel unit.
Preferably, in step (2), including:First multiple opening shaped steel units are interfixed to concatenate and form opening Shaped steel, then the opening shaped steel is fixed on shield duct piece intrados to be reinforced by fixedly connected part.
Preferably, in step (2), including:Each opening shaped steel unit arrangement is fixed by fixedly connected part On shield duct piece intrados to be reinforced, multiple opening shaped steel units are then interfixed into concatenation to be formed out Shape of the mouth as one speaks steel.
Preferably, in the step (2), interior connection-peg or electric welding are used between adjacent two opening shaped steel units And it is fixed together.
Preferably, binding agent is smeared with the shield duct piece contact position in the opening shaped steel unit, the binding agent is No-solvent type modified epoxy class steel bonding potting compound or silica gel.
Preferably, the fixedly connected part is expansion bolt or chemical bolt, and the filler is micro-expansion cement mortar Or slightly expanded concrete.
A kind of structure in the shaped steel consolidation by grouting tunnel that is open, including:It is corresponding with the intrados that shield duct piece is to be reinforced to open Shape of the mouth as one speaks steel unit, multiple opening shaped steel units, which interfix, to be concatenated and forms ring and set the intrados and have hollow circle The opening shaped steel of arc tube passage, it is multiple it is described opening shaped steel units via fixedly connected part and the shield duct piece it is to be reinforced in Cambered surface is fixedly connected, and filler is perfused with the circular arc tube passage.
Preferably, the opening shaped steel unit includes a shape steel plate and turned down in the same direction by shape steel plate both sides to be formed Flanging.
Preferably, the fixedly connected part is expansion bolt or chemical bolt;Confession is provided with the opening shaped steel unit The filling hole of filler is irrigated, the filler is micro-expansion cement mortar or slightly expanded concrete.
Preferably, binding agent is coated with the opening shaped steel unit and shield duct piece contact position, the binding agent is nothing Solvent-borne type modified epoxy class steel bonding potting compound or silica gel.
It is to be added with shield duct piece by providing the invention provides a kind of construction method in the shaped steel consolidation by grouting tunnel that is open Solid multiple opening shaped steel units for matching of intrados, multiple opening shaped steel units connect to form a hollow arc tube Passage, multiple opening shaped steel units are fixed on early shield duct piece intrados to be reinforced by fixedly connected part, in the circle Perfusion filler in arc tube passage, so as to filler and opening shaped steel formed new reinforcing body combine former tunnel structure body jointly by Power, solves perishable, mechanization dependence height in the prior art, binding agent is not sufficiently cured, and easily electric shock or short circuit The problem of, and to former tunnel structure carry out consolidation process when have consolidation effect is good, cost is low, short time limit, with type height etc. Feature.
Brief description of the drawings
Fig. 1 is the process flow chart of the construction method in present invention opening shaped steel consolidation by grouting tunnel;
Fig. 2 is the structural representation of the construction method in present invention opening shaped steel consolidation by grouting tunnel;And
Fig. 3 is Fig. 2 A-A profiles.
Embodiment
For the benefit of to the understanding of structure of the invention, illustrated below in conjunction with drawings and Examples.
With reference to shown in Fig. 1-Fig. 3, Fig. 1 is the process flow of the construction method in present invention opening shaped steel consolidation by grouting tunnel Figure, Fig. 2 are the structural representation of the construction method in present invention opening shaped steel consolidation by grouting tunnel, and Fig. 3 is Fig. 2 A-A profiles. Fig. 1-Fig. 3 is referred to, the invention provides a kind of construction method in the shaped steel consolidation by grouting tunnel that is open, is comprised the following steps:
Step S1, tunnel deformation situation is measured first, according to measurement result, makes multiple opening shaped steel units 2, The intrados that the shape of the opening shaped steel unit 2 is to be reinforced with shield duct piece 1 matches.In the present embodiment, be open shaped steel list Member 2 includes a shape steel plate and turned down in the same direction by shape steel plate both sides to form a pair of flangings, and opening shaped steel unit 2 is pasted Close on the intrados to be reinforced of shield duct piece 1 so that opening shaped steel unit 2 is internally formed hollow holding channel.
Step S2, the construction opening shaped steel on the intrados to be reinforced of shield duct piece 1:Sequentially by multiple opening shaped steel units 2 interfix concatenation, and to form the opening shaped steel that ring sets the intrados, the opening shaped steel is internally formed a hollow circular arc Tube passage.Further, in same circular arc tube passage, interior connection-peg or electricity are used between adjacent two opening shaped steel units 2 Weldering is attached.Further, binding agent 6 is smeared in the opening shaped steel unit 2 and the contact position of shield duct piece 1, it is described viscous It can be high-quality A levels no-solvent type modified epoxy class steel bonding potting compound or silica gel to tie agent 6, and high-quality A is selected in the present embodiment Level no-solvent type modified epoxy class steel bonding potting compound, primarily serve and play temporary sealing in grouting.
Step S3, there is provided fixedly connected part 4, opening shaped steel unit 2 is fixed on the intrados to be reinforced of shield duct piece 1 On.In the present embodiment, the fixedly connected part 4 is expansion bolt or chemical bolt, by opening up spiral shell on opening shaped steel unit 2 Keyhole, so that expansion bolt or chemical bolt are worn.Further, two expansion bolts each are set on opening shaped steel unit 2, So that the consolidation effect of opening shaped steel unit 2 is more stable.
When wait construction opening shaped steel unit 2 on the intrados reinforced, there are two kinds of embodiments, wherein,
Embodiment 1:
Multiple opening shaped steel units are mutually first welded concatenation and form opening shaped steel, then by fixedly connected part by described in Opening shaped steel is integrally attached on shield duct piece intrados to be reinforced.
Embodiment 2:
Each arrangement of opening shaped steel unit 2 is fixed on by shield duct piece intrados to be reinforced by fixedly connected part On, two in the same circular arc tube passage end part alignings of opening shaped steel unit 2 simultaneously contradict connection, then, are welded consecutive and connect shield The adjacent opening shaped steel unit 2 is to form opening shaped steel on the intrados to be reinforced of section of jurisdiction.
Step S4, filling hole 3 is set on opening shaped steel, filler 5 is fed into by filling hole 3.In the present embodiment, institute It is micro-expansion cement mortar or slightly expanded concrete to state filler 5, and filling hole 3 is arranged on two adjacent opening shaped steel units Between 2.Certainly, filling hole can be arranged on the flanging of the both sides of opening shaped steel unit 2 in specific use, and can also be set Optional position in the middle part of steel plate, however it is not limited to the present embodiment.Hole 3 is generally filled with to dispatch from the factory as finished product in opening shaped steel unit When, just set, one or more filling holes 3 or open-type can be set on each opening shaped steel unit 2 One or more filling holes 3 are set on the outs open shaped steel unit 2 on steel, choosing can be made according to the practical distortion situation in tunnel Select.
Present invention also offers a kind of structure in the shaped steel consolidation by grouting tunnel that is open, including:It is to be reinforced with shield duct piece 1 Multiple opening shaped steel units 2 and fixedly connected part 4 corresponding to intrados.
Be open shaped steel unit 2, including a shape steel plate and is turned down in the same direction by shape steel plate both sides and form flanging, will The shaped steel unit 2 that is open is bonded on the intrados to be reinforced of shield duct piece 1 so that being internally formed for opening shaped steel unit 2 is hollow Holding channel.Multiple opening shaped steel units 2 fix concatenation, and a hollow circular arc tube passage is formed with connection.Along tunnel Bearing of trend, multiple circular arc tube passages can be set according to the actual conditions of tunnel deformation.Further, in the opening Shaped steel unit and shield duct piece contact position are coated with binding agent, and high-quality A levels no-solvent type modified epoxy tree is selected in the present embodiment Lipid steel bonding potting compound, during so as to prevent that the later stage is in the milk in circular arc tube passage, prevent filler 5 from opening shaped steel unit 2 and shield duct piece 1 gap in overflow, influence strengthening quality.
Fixedly connected part 4, the fixedly connected part 4 are expansion bolt or chemical bolt, and expanding screw is selected in the present embodiment Bolt, by opening up bolt hole on opening shaped steel unit 2 so that expansion bolt fixes opening shaped steel unit 2 via bolt hole On the intrados to be reinforced of shield duct piece 1.Further, filling hole 3 is set on opening shaped steel unit 2, for arc tube Filler 5 is fed into passage.The filler 5 can be micro-expansion cement mortar or slightly expanded concrete.Certainly, having Filling hole 3 can be arranged on the flanging of the both sides of opening shaped steel unit 2 during body uses, and can also be arranged on appointing in the middle part of steel plate Meaning position, however it is not limited to the present embodiment.Hole 3 is generally filled with when opening shaped steel unit dispatches from the factory as finished product, is just set, can To set one or more filling holes 3 or the outs open type being open on shaped steel on each opening shaped steel unit 2 One or more filling holes 3 are set on steel unit 2, can be made a choice according to the practical distortion situation in tunnel.
In specific utilization, when wait construction opening shaped steel unit 2 on the intrados reinforced, there are two kinds of embodiments, its In, embodiment 1:The mutual electric welding connection of multiple opening shaped steel units is first formed into opening shaped steel, then will by fixedly connected part The opening shaped steel is integrally attached on shield duct piece intrados to be reinforced.Embodiment 2:By fixedly connected part by each institute State the arrangement of opening shaped steel unit 2 to be fixed on shield duct piece intrados to be reinforced, two openings in same circular arc tube passage The end part aligning of shaped steel unit 2 simultaneously contradicts connection, then, adjacent on electric welding connection shield duct piece intrados to be reinforced described to open Shape of the mouth as one speaks steel unit 2 is to form opening shaped steel.
Now a kind of concrete operations details of the construction method in the shaped steel consolidation by grouting tunnel that is open provided by the invention is carried out Describe in detail.
Tunnel deformation situation is measured first, according to measurement result, obtains reinforcing face form parameter.Become according to tunnel Shape situation, multiple opening shaped steel units are designed, one or more opening shaped steel unit is processed, makes opening shaped steel Cell configuration matches with reinforcing face.If necessary to the opening shaped steel unit of more than one, between adjacent opening shaped steel unit It is welded to connect.The opening shaped steel unit, one or more bolts hole will be reserved during processing, expansion bolt 4 are installed, by opening Shaped steel unit is fixed on tunnel-liner reinforcing face.To avoid the reliability in spillage, increase opening shaped steel consolidation by grouting tunnel, The opening shaped steel unit and tunnel lining segment contact position, smears binding agent 6, binding agent 6 only in grouting from temporary sealing Effect, the binding agent 6 can be high-quality A levels no-solvent type modified epoxy class steel bonding potting compound or silica gel.The opening Shaped steel is provided with one or more injected holes 3, microdilatancy slurry 5 is irrigated by injected hole, to increase the intensity of strenthening member.Slurry Body is irrigated filling, convenient transportation after the installation of opening section steel reinforcement, and the shaped steel that is open is installed and grouting is individually carried out, not shadow Ring the normal operations such as subway.The microdilatancy slurry 5 can be micro-expansion cement mortar or slightly expanded concrete.Monitor tunnel Deformation and bearing capacity change, tunnel stabilization is treated, reinforce and complete.
It is to be added with shield duct piece by providing the invention provides a kind of construction method in the shaped steel consolidation by grouting tunnel that is open Solid multiple opening shaped steel units for matching of intrados, multiple opening shaped steel units connect to form a hollow arc tube Passage, multiple opening shaped steel units are fixed on early shield duct piece intrados to be reinforced by fixedly connected part, in the circle Perfusion filler in arc tube passage, so as to filler and opening shaped steel formed new reinforcing body combine former tunnel structure body jointly by Power, solves perishable, mechanization dependence height in the prior art, binding agent is not sufficiently cured, and easily electric shock or short circuit The problem of, and to former tunnel structure carry out consolidation process when have consolidation effect is good, cost is low, short time limit, with type height etc. Feature.
The present invention is described in detail above in association with accompanying drawing embodiment, those skilled in the art can be according to upper State and bright many variations example is made to the present invention.Thus, some details in embodiment should not form limitation of the invention, this Invention will be used as protection domain using the scope that appended claims define.

Claims (7)

  1. A kind of 1. construction method in the shaped steel consolidation by grouting tunnel that is open, it is characterised in that including:
    (1) tunnel deformation situation is measured, according to measurement result, makes multiple opening shaped steel units, the opening shaped steel The shape of the unit intrados to be reinforced with shield duct piece matches, and the opening shaped steel unit includes a shape steel plate and by type Steel plate both sides turn down to form flanging in the same direction;
    (2) the construction opening shaped steel on shield duct piece intrados to be reinforced:It is sequentially that multiple opening shaped steel units are mutual For fixed concatenation to form the opening shaped steel that ring sets the intrados, the opening shaped steel is internally formed hollow circular arc tube passage, Binding agent is smeared with the shield duct piece contact position in the opening shaped steel unit, the binding agent is no-solvent type modified epoxy Resinae steel bonding potting compound or silica gel, the opening shaped steel unit are fixed on the shield duct piece by the fixedly connected part of offer On intrados to be reinforced;
    (3) filler is fed into by the circular arc tube passage by the filling hole set on the opening shaped steel unit.
  2. 2. the construction method in opening shaped steel consolidation by grouting tunnel as claimed in claim 1, it is characterised in that in step (2), Including:Multiple opening shaped steel units concatenation that interfixes first is formed into opening shaped steel, then by fixedly connected part by institute Opening shaped steel is stated to be fixed on shield duct piece intrados to be reinforced.
  3. 3. the construction method in opening shaped steel consolidation by grouting tunnel as claimed in claim 1, it is characterised in that in step (2), Including:Each opening shaped steel unit arrangement is fixed on by shield duct piece intrados to be reinforced by fixedly connected part On, multiple opening shaped steel units are then interfixed into concatenation to form opening shaped steel.
  4. 4. the construction method in the opening shaped steel consolidation by grouting tunnel as described in claim 1,2 or 3, it is characterised in that the step Suddenly in (2), it is fixed together between adjacent two opening shaped steel units using interior connection-peg or electric welding.
  5. 5. the construction method in opening shaped steel consolidation by grouting tunnel as claimed in claim 1, it is characterised in that described to be fixedly connected Part is expansion bolt or chemical bolt, and the filler is micro-expansion cement mortar or slightly expanded concrete.
  6. A kind of 6. structure in the shaped steel consolidation by grouting tunnel that is open, it is characterised in that including:The intrados to be reinforced with shield duct piece Corresponding opening shaped steel unit, multiple opening shaped steel units, which interfix, to be concatenated and forms ring and set the intrados and have The opening shaped steel of hollow circular arc tube passage, multiple opening shaped steel units are treated via fixedly connected part and the shield duct piece The intrados of reinforcing is fixedly connected, and filler is perfused with the circular arc tube passage, in the opening shaped steel unit and shield pipe Piece contact position is coated with binding agent, and the binding agent is no-solvent type modified epoxy class steel bonding potting compound or silica gel, described Opening shaped steel unit includes a shape steel plate and turned down in the same direction by shape steel plate both sides to form flanging.
  7. 7. the structure in opening shaped steel consolidation by grouting tunnel as claimed in claim 6, it is characterised in that
    The fixedly connected part is expansion bolt or chemical bolt;
    It is described opening shaped steel unit on be provided with for perfusion filler filling hole, the filler be micro-expansion cement mortar or Person's slightly expanded concrete.
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CN105401955A (en) * 2015-11-30 2016-03-16 武汉大学 Seepage-proofing bearing structure of soft soil pressure tunnel
CN106761812B (en) * 2017-01-17 2019-05-17 中国铁路设计集团有限公司 A kind of existing shield tunnel tunnel segment structure reinforcement means
CN108344638B (en) * 2018-01-24 2021-02-09 浙江大学城市学院 Indoor test method for reinforcing effect of existing subway tunnel structure by composite mortar
CN108411806A (en) * 2018-03-12 2018-08-17 华南理工大学 A kind of structure and its installation method of reinforced steel concrete pipe culvert
CN108978620B (en) * 2018-06-30 2020-06-02 广东雄桥建设有限公司 Shield constructs peripheral building foundation stabilization's of end well head structure
CN109723467B (en) * 2019-01-11 2020-03-17 北京交通大学 Underground excavation tunnel lining reinforcing device and reinforcing method
CN111706358A (en) * 2020-05-11 2020-09-25 同济大学 Tunnel bonded steel reinforcing method

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