CN107893665B - A kind of prefabricated assembled composite supporting construction mounting process based on fashioned iron - Google Patents

A kind of prefabricated assembled composite supporting construction mounting process based on fashioned iron Download PDF

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Publication number
CN107893665B
CN107893665B CN201711079723.5A CN201711079723A CN107893665B CN 107893665 B CN107893665 B CN 107893665B CN 201711079723 A CN201711079723 A CN 201711079723A CN 107893665 B CN107893665 B CN 107893665B
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CN
China
Prior art keywords
supporting construction
fashioned iron
concrete component
cable
groove
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Application number
CN201711079723.5A
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Chinese (zh)
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CN107893665A (en
Inventor
王军
谢浩
左建平
顾薛青
徐亮
宋建新
王正泽
王波
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山东建筑大学
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Priority to CN201711079723.5A priority Critical patent/CN107893665B/en
Publication of CN107893665A publication Critical patent/CN107893665A/en
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Publication of CN107893665B publication Critical patent/CN107893665B/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/08Lining with building materials with preformed concrete slabs
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/08Lining with building materials with preformed concrete slabs
    • E21D11/083Methods or devices for joining adjacent concrete segments
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14Lining predominantly with metal
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts

Abstract

The present invention relates to a kind of prefabricated assembled composite supporting construction mounting process based on fashioned iron, (1) lift the concrete component in place, and structural body is anchored on bottom plate by anchor pole/anchor cable hole reserved in structure with anchor pole and/or anchor cable;(2) remaining concrete component in addition to bottom plate is installed by special installation apparatus, and after every block concrete component installation is in place, structural body is anchored on country rock by the anchor pole/anchor cable hole reserved on structural body;(3) multistage fashioned iron is embedded into the groove of concrete component, constitutes shape steel bracket;(4) shape steel bracket joint is blocked with card cable, adjusts card cable tightness, the mutual changing of the relative positions in shape steel bracket joint is allowed to complete the function of release to discharge the pressure gathered in bracket;(5) installation for completing monocycle supporting construction body repeats the installation that step (1)-(4) carry out next ring supporting construction;The invention reside in: improve structural stability and bearing capacity.

Description

A kind of prefabricated assembled composite supporting construction mounting process based on fashioned iron
Technical field
The present invention relates to roadway support fields, and in particular to a kind of prefabricated assembled composite supporting construction peace based on fashioned iron Dress technique.
Background technique
Currently, the main support technology in Deep Soft Rock tunnel has: bolt-mesh-spurting supporting series technique, shape steel bracket supporting series skill Art, reinforced concrete structure supporting series technique and steel pipe concrete bracket support technology etc..
With the increase of tunnel buried depth, the routine supporting means such as simple anchor shaft anchor cable are no longer satisfied Drift stability Demand, under powerful roadway surrounding rock pressure effect, tunnel needs not the composite supporting construction body that Bolt net and jet and bracket are formed Disconnected to reprocess, Deformation in Soft Rock Tunnel seriously even destroys.
Steel pipe concrete bracket also achieves good supporting although having high-strength bearing capacity in engineering practice Effect, but its higher cost restricts always its popularization and application.
U-shaped steel bracket participate in combined supporting, be solve the soft broken wall rock laneway support problem of high pressure important channel it One.U-shaped steel bracket is low in cost and has biggish bearing capacity.But due to roadway surrounding rock concave-convex surface in engineering practice Injustice, support force complicated condition, easily formation stress are concentrated or uneven loading action.U-shaped steel bracket is made in roadway surrounding rock pressure The bending and bad break or out-of-plane overturning often occurred in plane under distorts, wherein being no lack of due to structural instability, indulging It is lost to low-resistance caused by stress, unbalance loading inclination, prevent the bearing capacity of U-shaped steel bracket from playing completely.Bracket once occurs The destruction of above situation, almost loses whole bearing capacities, and the later period constantly reprocesses the waste for not only causing fund, and the time at This is high.
In conclusion supporting construction low bearing capacity is primarily present in Deep Soft Rock Roadway Support Technology, and it is at high cost, it can contracting amount Small, tunnel needs the problem of constantly reprocessing.If can guarantee U-shaped steel bracket uniform stressed, the unfavorable conditions such as unbalance loading are eliminated It influences, the bearing capacity of U-shaped steel bracket can be given full play to as compared with the past under identical wall rock condition, maintain tunnel to enclose reaching While rock stabilization, the purpose of reduction repair rate, within limits by cost control, a set of Deep Soft Rock tunnel will be formed The new method of supporting.The present invention in conjunction with prefabricated reinforced concrete arc plate, and is aided with anchor shaft anchor cable based on U-shaped steel bracket Deng conventional supporting means, achieve the purpose that Deep Soft Rock Drift stability controls.
Summary of the invention
The object of the present invention is to provide a kind of prefabricated assembled composite supporting construction mounting process based on fashioned iron, solution depth Well soft rock roadway support problem.Underground supporting construction is subjected to huge load and stress condition is complicated, stress concentration, Phenomena such as unbalance loading, makes the life cycle of supporting construction excessively of short duration.How to guarantee the intensity of supporting construction, alleviate stress concentrate, Structural failure caused by the unfavorable conditions such as unbalance loading, reducing repair of laneway rate is technical problem to be solved by this invention.
Specific structural body of the present invention includes precast concrete and fashioned iron, and the fashioned iron is embedded in the concrete structure In part, multiple structural bodies are circumferentially the assembled structure being integrated, the integrated construction profile and the lane around tunnel Road profile matches;The structural body is installed by following steps:
(1) concrete component is lifted in place, passes through anchor bar/anchor cable reserved in structure with anchor pole and/or anchor cable Structural body is anchored on bottom plate by hole;
(2) remaining concrete component in addition to bottom plate a series of lift, translate, rotate by special installation apparatus Installation is completed in movement, after the installation of every block concrete component is in place, by anchor pole/anchor cable hole for reserving on structural body by structural body anchor Gu on country rock;
(3) structural body and allow pressure component be installed to be formed closure supporting construction after, multistage fashioned iron is embedded into concrete In the groove of component, shape steel bracket is constituted;
(4) shape steel bracket joint is blocked with card cable, is adjusted card cable tightness, is allowed shape steel bracket joint phase The mutual changing of the relative positions completes the function of release to discharge the pressure gathered in bracket;
(5) installation for completing monocycle supporting construction body repeats the installation that step (1)-(4) carry out next ring supporting construction.
It further, further include inciting somebody to action bottom plate gunite concrete to certain altitude with simple monorail crane in the step (1) The lifting of arc plate is in place.
Further, in the step (2), every block structure body uses spoil woven bag or using pulp shooting machine after being installed in place Cement mortar is filled between arc plate and country rock.
It further, further include the both ends that pressure component will be allowed to be installed to the concrete component, institute in the step (1) It states and makes pressure element cross-section shape identical as the cross-sectional shape of concrete component.
It further, further include step (6), by the monocycle supporting construction bodies multiple in step (5) along the tunnel axis The support system is spliced to form to another monocycle supporting construction body.
Further, in the step (3), one end joint of two sections of fashioned iron is embedded in the groove by card cable Interior, the fashioned iron that the other end of two sections of fashioned iron stretches out in the concrete component and another concrete component groove passes through card Cable clamping.
Further, in the step (4), the concrete component includes bolt, the bolt and the concrete structure Part is affixed, and the two sides of the groove are arranged in, and the card cable is provided with bolt hole, and the card cable is fastened fashioned iron by bolt On the concrete component.
Further, in the step (4), card cable one end be plate structure, the other end be with outside the fashioned iron other side The fashioned iron by bolt and the structural body snapping and is connected to the groove by the structure that shape matches, the card cable other end It is interior.
Further, in the step (6), the concrete component includes pin hole, and the pin hole is arranged in concrete structure On two sides of part in the width direction, the monocycle supporting construction body passes through pin hole and pin and another monocycle supporting construction body edge The channel is axial assembled.
Further, in the step (1) and (2), the concrete component includes anchor pole/anchor cable hole, the anchor pole/anchor The two sides of the groove are arranged in rope hole, and the concrete component is fixed on the country rock in channel by anchor pole/anchor cable hole, described Anchor pole/anchor cable hole is long and narrow band round rectangle hole, with prevent because reinforced concrete arc plate with surrouding rock deformation is inconsistent that anchor cable is caused to be cut It cuts through bad.
The present invention at least has the advantages that
(1) all precast construction bodies use consistent specification, make convenient for mass.The production of precast construction body uses phase With mold both can, reduce die cost.Precast construction body structure is simple, and splicing is convenient;
(2) precast construction body is prefabricated on ground, guarantees its intensity with higher, as the mistake between country rock and bracket Component is crossed, the stress condition conversion arc plate that roadway surrounding rock can be applied to bracket complexity is applied to the evenly load of bracket, changes It has been apt to the stress condition of U-shaped steel bracket, has avoided the generation of the unfavorable conditions such as stress concentration, unbalance loading, give full play to rack bearing Ability;
(3) it is reserved with 4 anchor pole (rope) holes on every piece of precast construction body, during underground construction, passes through anchor pole (rope) hole Arc plate can be directly anchored on country rock, facilitate the stability that ensure that structure in work progress while construction;
(4) twice groove is equipped in the middle part of precast construction body, the protrusion among groove just with the U row groove phase contract on bracket It closes, load is evenly distributed on bracket, while also limiting trend of the U-shaped steel bracket to motion outside plane, prevents bracket from existing Out-of-plane overturning distortion occurs when stress is excessive;
(5) two kinds of release modes: first is that allowing laminated structure that lane may be implemented when bearing compression between precast construction body The compressive deformation of road circumferential direction, achievees the purpose that allow pressure;Second is that being connected between U-shaped steel bracket with card cable, adjustment card cable elasticity makes High resistant may be implemented at Support joint to slide, is in due course stuck, discharge the pressure gathered in bracket, formation allows, resists suitable effect. Two kinds of release modes, which have been annotated well in New Austrian Tunneling Method, avoids the initial period of tunnel excavation moderate finite deformation, to give full play to country rock itself carrying energy The support principle of power.
(6) specification of U-shaped steel is normalized, and processing is repaired or all relatively easy convenience of replacement, easy to transportation and installation Fast, it can be used repeatedly, be conducive to mechanized construction.
(7) card cable is directly installed on arc plate, compared with the service condition of card cable under normal conditions, is not only realized The connection function of U-shaped steel bracket, and capable of securing the stand on precast construction body limits bracket planar or plane Outer movement tendency, it is ensured that bracket is firm, gives full play to rack bearing ability;
(8) monocycle supporting construction body is axially connected together by steel pin made of concrete filled steel tube along tunnel, makes each monocycle It acts synergistically between supporting construction body, forms integer support structure, further increase structural stability and bearing capacity.Separately Outside, steel pin can also play the role of fixed precast construction body in precast construction body installation process.
(9) along tunnel, axially connection is integral by monocycle supporting construction body for steel pin, acts synergistically between structural body, holds jointly It carries pressure from surrounding rock and maintains stability of the roadway.
(10) anchor pole/anchor cable hole is long and narrow band round rectangle hole, to prevent because reinforced concrete arc plate and surrouding rock deformation are different Cause leads to anchor cable failure by shear.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of support system of the present invention;
Fig. 2 is the schematic diagram of monocycle supporting construction body;
Fig. 3 is the prefabricated construction body schematic diagram with fashioned iron;
Fig. 4 is prefabricated construction body schematic diagram;
Fig. 5 is card cable structure schematic diagram;
Fig. 6 is to allow pressed wood block structure schematic diagram.
Main appended drawing reference explanation:
1- steel pin, 2- allow pressed wood block, 3- prefabricated construction body, and 4- reserves anchor pole/anchor cable hole, 5- bolt, 6-U fashioned iron Bracket, 7- card cable, 8- groove, 9- reserve pin hole, 10- bolt hole.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
In order that the present invention can be more clearly and readily understood, below according to specific embodiment and in conjunction with attached drawing to this Invention is described in further detail.
As shown, the present invention includes monocycle supporting construction body, insert-type steel in the monocycle supporting construction body, the monocycle The construction profile of supporting construction body matches with channel profile;Multiple monocycle supporting construction bodies are axially connected along the channel Constitute the support system.Specifically, the monocycle supporting construction body includes multistage prefabricated construction body 3;Multistage institute It states prefabricated assembly structural body 3 and fits together the composition monocycle supporting construction body;Multiple monocycle supporting construction bodies are along institute It states channel and is axially spliced to form the support system with another monocycle supporting construction body.Specifically, the prefabricated assembled knot Structure body 3 includes groove 8, and the medial surface or lateral surface of the through-thickness of prefabricated construction body 3 is arranged in the groove 8 On, the shape of the groove 8 and the shape of fashioned iron side match.Specifically, the fashioned iron is two sections, two sections of fashioned iron One end joint is embedded in the groove 8 by card cable 7, and the other end of two sections of fashioned iron stretches out the prefabricated assembled knot Fashioned iron in structure body 3 and another 3 groove 8 of prefabricated construction body is clamped by card cable 7.Specifically, further include bolt 5, The bolt 5 and the prefabricated construction body 3 are affixed, and the two sides of the groove 8 are arranged in, and the card cable 7 is provided with Fashioned iron is fastened on the prefabricated construction body 3 by bolt hole 10, the card cable 7 by bolt 5.Specifically, described 7 one end of card cable is plate structure, and the other end is the structure to match with fashioned iron other side shape, and bolt hole 10 is provided with plate structure On, the fashioned iron by bolt and the prefabricated construction body snapping and is connected in the groove 8 by the card cable 7. Specifically, prefabricated construction body further includes pin hole, the pin hole setting prefabricated construction body in the width direction Side on, the prefabricated construction body is axial along the channel by pin hole and pin and another prefabricated construction body It is assembled.Specifically, the prefabricated construction body further includes anchor pole/anchor cable hole, the anchor pole/anchor cable hole is arranged described The two sides of groove, the structural body are fixed on the country rock in channel by anchor pole/anchor cable hole, and anchor pole/anchor cable hole is long and narrow band Round rectangle hole, with prevent because reinforced concrete arc plate with surrouding rock deformation is inconsistent leads to anchor cable failure by shear.Specifically, described pre- Fabricated construction body processed is described to allow the transversal of pressed wood block around the circumferential structure by allowing pressed wood block assembly to be integrated in the channel Face shape is identical as the cross-sectional shape of prefabricated construction body.Specifically, the profile of the prefabricated construction body For arcuation, strip or other curved non-arc structures.I.e. supporting construction body may be designed as flat oval, vertical ellipse etc. other Shape.
Specifically, monocycle supporting construction body of the invention is made of 6 blocks of arc plates 3, it is installed with and allows between adjacent arcs plate 3 Pressed wood block 2 installs U-shaped steel bracket 6 on the inside of arc plate 3 for the overall stability for guaranteeing supporting construction body, and bracket 6 and arc plate 3 are perfect Agree with.It is connected between tunnel axial direction arc plate 3 by steel pin 1, each ring arc plate 3 acts synergistically, and forms integer support structure.Monocycle branch Protection structure is as shown in Fig. 2, integer support system is as shown in Figure 1.
Supporting construction body allows there are two types of pressure modes, first is that realized by compressible wooden unit 2, when supporting construction body by When larger pressure, allow pressed wood block 2 can be along tunnel circumferential ring to compression, supporting construction body tends to the state of standard circular;Second is that Pressure is allowed by the realization of U-shaped steel bracket 6.The connector of U-shaped steel bracket 6 is fixed on arc plate 4 by card cable 7, by adjusting 7 pine of card cable Tightness realizes the size of 6 joint resistance of bracket, realizes the effect of high resistant sliding, discharges the pressure gathered in bracket, reaches and allow The purpose of pressure.
Axially connection is integral along tunnel for monocycle supporting construction body steel pin 1 made of concrete filled steel tube, makes structural body Between act synergistically, improve structural stability and bearing capacity.
Arc plate be reinforced concrete structure body, for guarantee armored concrete arc plate 3 intensity, arc plate 3 it is prefabricated on ground and At.One drift section can form monocycle supporting construction body by 6 sections of arc plates 3 are assembled, and monocycle supporting construction body is along tunnel axial direction Extend to form the complete supporting to tunnel.Arc plate radius of curvature size allows pressed wood block 2 to compress according to drift section size design Supporting construction body after 50% is in standard circular.Design has pin hole 9, bolt 5, groove 8 on arc plate 3.
The detailed construction of arc plate is as shown in figure 4, the effect of pin hole 9, bolt 5, groove 8 is respectively as follows: pin hole: being inserted into pin hole Monocycle supporting construction is axially connected together by concrete filled steel tube steel pin along tunnel, so that cooperateing between monocycle supporting construction body Effect improves the globality and bearing capacity of supporting construction body;Bolt: bolt is arranged in arc plate central slot two sides, pours It, thereon can be with installation card cable 7 with fixation, connecting U-shaped steel bracket 6, in limit bracket plane or out-of-plane fortune on arc plate Dynamic trend, gives full play to rack bearing ability;Groove: the groove on arc plate shares twice, and U-shaped steel bracket can be embedded into groove In agree with arc plate perfection.Load is uniformly applied on bracket by such agree with, and is improved support force situation, is improved supporting Structure integrated carrying ability, while also preventing bracket and out-of-plane overturning distortion occurs;Reserved anchor pole (rope) hole 4: in arc plate In installation process, arc plate can be anchored on country rock by reserved anchor pole (rope) hole, convenient for the progress of subsequent installation process.In advance Stay staying to set and also indirectly improving structural body stability for anchor pole (rope) hole.
Spatial relation between the components such as card cable, U-shaped steel bracket, arc plate, bolt, steel pin is as shown in Figure 6.Card cable: It is made by metal material.It is reserved with bolt hole on card cable, has curvature identical with arc plate to agree with arc plate and U-shaped steel branch Frame.The effect of card cable is connecting U-shaped steel bracket and is fixed on arc plate, while can prevent U-shaped steel bracket from plane occurs Interior bending and bad break, or the out-of-plane overturning distortion as caused by unbalance loading.Steel pin: in hollow steel casing pack coagulation Concrete-filled Tubular Steel Stub Columns are made in soil.The effect of steel pin is that along tunnel, axially connection is integral by monocycle supporting construction body, makes each list Ring supporting construction body synergistic effect, improves supporting construction body overall stability and bearing capacity.
Make the structure of pressed wood block as shown in Figure 6.Allow pressed wood block 2 between two sections of adjacent arc plates.With 6 pieces of 3 structures of arc plate At supporting construction body for, allow pressed wood block to share 6 pieces, allowing on pressed wood block has groove identical with arc plate to agree with U-shaped steel Bracket.It allows the thickness of pressed wood block generally between 0.5~1.0m between arc plate, there is biggish compressibility, can play Allow the effect of pressure;To avoid allowing pressed wood block rotten, preservative treatment should be carried out to it, such as using the method for pitch or bituminizing; It allows pressed wood block that should keep the direction of batten fiber along tunnel radial direction when placing, and is paved with along tunnel long axis direction, in this way can Arc plate uniform stressed can be made by giving full play to the compressible characteristic of wooden unit again;It allows pressed wood block that should choose neither too hard, nor too soft timber, compresses Amount is preferably 50% or so.Wooden unit does not have very much the effect of pressure of allowing firmly.Wooden unit it is too soft then can due to tunnel initial deformation fast speed, Cause wooden unit compression too early, decrement is big, cannot play the role of allowing pressure in the tunnel later period.
The present invention is the supporting construction for carrying out tunnel by the following method, and the installation of supporting construction body is simple and convenient, The equipment mainly used has: 1, simple monorail crane;2, special installation apparatus.Bottom arc plate need to only use simple monorail crane can be completed Lifting positioning.Its complement of an arc plate, will be lifted on special installation apparatus by monorail crane, then be completed by the mechanical arm in equipment flat Arc plate, can be installed in place by the movement such as shifting and rotation.
By taking the supporting construction body that 6 sections of arc plates are constituted as an example, work progress is as follows:
(1) after bottom plate gunite concrete to design bottom plate heights, arc plate is lifted in place with simple monorail crane.It is logical with anchor pole Arc plate is anchored on bottom plate by reserved anchor pole (rope) hole crossed on arc plate, and pressed wood block will be allowed to be installed to arc board ends.
(2) its complement of an arc plate by special installation apparatus carry out it is a series of the movements such as lift, translate, rotate and complete installation, every piece After the installation of arc plate is in place, arc plate should be anchored on country rock by anchor pole (rope) hole reserved on arc plate, using pulp shooting machine by water Cement mortar is filled between arc plate and country rock, and the filling of spoil woven bag can also be used;
(3) arc plate and pressed wood block is allowed to be installed, after forming closure supporting construction, by U-shaped steel bracket be embedded into arc plate with It allows in the groove of pressed wood block, is blocked at U-shaped steel Support joint with card cable, card cable tightness is adjusted, so that U-shaped steel branch bridge joint At head can the mutual changing of the relative positions to discharge the pressure gathered in bracket complete the function of release;
(4) installation for completing monocycle supporting construction, carries out the installation of next ring supporting construction, repeats step (1) (2) (3).
(5) multiple monocycle supporting construction bodies are axially spliced to form with another monocycle supporting construction body along the tunnel The support system.
According to the difference of the conditions such as tunnel buried depth, geological conditions, crustal stress and lithology, need to design different supporting construction Body size.According to on-site actual situations it needs to be determined that major parameter have: thickness, intensity and curvature, the pin hole depth, list of arc plate Bolt group number on block arc plate, allow the thickness and its compressed thickness of pressed wood block, the model of steel pin and length, the model of U-shaped steel bracket, The size of card cable.
The above, only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, ability Field technique personnel are not it should be understood that departing from the principle and spirit of the invention defined by the claims and their equivalents In the case where, it can modify to these embodiments and perfect, these are modified and improve also should be in protection scope of the present invention It is interior.

Claims (9)

1. a kind of prefabricated assembled composite supporting construction mounting process based on fashioned iron, which is characterized in that prefabricated assembled compound Supporting construction is prefabricated construction body, and the structural body includes precast concrete and fashioned iron, and the fashioned iron is embedded in institute It states in concrete component, multiple structural bodies are outside the structure that tunnel is circumferentially that assembly is integrated, the integrated structure Shape matches with the tunnel profile;Twice groove is equipped in the middle part of precast construction body, the protrusion among groove just with U-shaped steel branch U-shaped groove on frame is mutually agreed with;Medial surface or the outside of the through-thickness of prefabricated construction body is arranged in the groove On face;The structural body is installed by following steps:
(1) concrete component is lifted in place, it will by the anchor pole/anchor cable hole reserved in structure with anchor pole and/or anchor cable Structural body is anchored on bottom plate, the both ends that pressure component will be allowed to be installed to the concrete component, the pressure element cross-section that allows Shape is identical as the cross-sectional shape of concrete component;
(2) remaining concrete component in addition to bottom plate by special installation apparatus carry out it is a series of lift, translate, spinning movement it is complete At installation, after every block concrete component installation is in place, structural body is anchored at by the anchor pole/anchor cable hole reserved on structural body and is enclosed On rock;
(3) structural body and allow pressure component be installed to be formed closure supporting construction after, multistage fashioned iron is embedded into concrete component Groove in, constitute shape steel bracket;
(4) shape steel bracket joint is blocked with card cable, adjusts card cable tightness, allows shape steel bracket joint mutually wrong It is dynamic, to discharge the pressure gathered in bracket, the function of release is completed, card cable one end is plate structure, and the other end is another with fashioned iron The structure that side shape matches, bolt hole are provided on plate structure, and the card cable passes through bolt and the prefabricated assembled knot The fashioned iron is simultaneously clamped in the groove by structure body snapping;
(5) installation for completing monocycle supporting construction body repeats the installation that step (1)-(4) carry out next ring supporting construction.
2. mounting process as described in claim 1, which is characterized in that further include that bottom plate is sprayed coagulation in the step (1) Soil arrives certain altitude, is lifted arc plate in place with simple monorail crane.
3. mounting process as described in claim 1, which is characterized in that in the step (2), after every block structure body is installed in place Cement mortar is filled between arc plate and country rock using spoil woven bag or using pulp shooting machine.
4. mounting process as described in claim 1, which is characterized in that it further include step (6), it will be multiple described in step (5) Monocycle supporting construction body is axial along the tunnel and another monocycle supporting construction body is spliced to form the support system.
5. mounting process as described in claim 1, which is characterized in that in the step (3), a termination of two sections of fashioned iron It is embedded in the groove at head by card cable, the other end of two sections of fashioned iron stretches out the concrete component and another coagulation Fashioned iron in native member recess is clamped by card cable.
6. mounting process as claimed in claim 5, which is characterized in that in the step (4), the concrete component includes spiral shell Bolt, the bolt and the concrete component are affixed, and the two sides of the groove are arranged in, and the card cable is provided with bolt hole, Fashioned iron is fastened on the concrete component by the card cable by bolt.
7. mounting process as claimed in claim 6, which is characterized in that in the step (4), card cable one end is plate knot Structure, the other end are the structure to match with fashioned iron other side shape, and the card cable other end passes through bolt and the structural body snapping And in the groove by fashioned iron clamping.
8. mounting process as claimed in claim 4, which is characterized in that in the step (6), the concrete component includes pin Hole, the pin hole are arranged on two sides of concrete component in the width direction, and the monocycle supporting construction body passes through pin hole It is axial assembled along the tunnel with pin and another monocycle supporting construction body.
9. such as the described in any item mounting process of claim 1-8, which is characterized in that described mixed in the step (1) and (2) Solidifying soil component includes anchor pole/anchor cable hole, and the two sides of the groove are arranged in the anchor pole/anchor cable hole, and the concrete component is logical Anchor pole/anchor cable hole is crossed to be fixed on the country rock in tunnel, the anchor pole/anchor cable hole is long and narrow band round rectangle hole, with prevent because Reinforced concrete arc plate with surrouding rock deformation is inconsistent leads to anchor cable failure by shear.
CN201711079723.5A 2017-11-06 2017-11-06 A kind of prefabricated assembled composite supporting construction mounting process based on fashioned iron CN107893665B (en)

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CN110748010A (en) * 2019-10-29 2020-02-04 武汉市市政建设集团有限公司 Rigid assembling mortise-tenon joint and assembling type construction component

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