CN103244143A - Underground engineering tunneling construction method and underground station - Google Patents
Underground engineering tunneling construction method and underground station Download PDFInfo
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- CN103244143A CN103244143A CN2013102015469A CN201310201546A CN103244143A CN 103244143 A CN103244143 A CN 103244143A CN 2013102015469 A CN2013102015469 A CN 2013102015469A CN 201310201546 A CN201310201546 A CN 201310201546A CN 103244143 A CN103244143 A CN 103244143A
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Abstract
The invention discloses an underground engineering tunneling construction method and an underground station. The underground engineering tunneling construction method includes the steps: longitudinally jacking a plurality of uniformly arranged and mutually engaged steel pipes with wing plates welded on the peripheries along the top and the peripheries of two sides of an underground engineering structure in a working pit on the outer side of an underground engineering; timely excavating soil in the steep pipes and within the range of the wing plates of the adjacent steel pipes in the jacking process and transversely connecting the adjacent steel pipes by connectors; closing two ends of each steel pipe and two ends of the range of the wing plates of the adjacent steel pipes, and pouring concrete into the steel pipes and the range of the wing plates of the adjacent steel pipes to form an integrally stressed siding wall by the mutually engaged steel pipes; excavating soil corresponding to beams and columns in the main underground engineering structure step by step and constructing a beam and column structure of the main structure after excavating the soil; and constructing siding wall structures of a soil structure while excavating the soil. By the construction method, ground settlement can be effectively controlled, and the construction process is high in safety and mechanization degree.
Description
Technical field
The present invention relates to tunnel and underground construction design and construction technical field, be specifically related to underground construction tunneling job practices and underground station under a kind of, the weak condition of country rock shallow for buried depth.
Background technology
Along with the fast continual development of Chinese society economy, domestic many big and medium-sized cities have all begun large-scale subway construction and underground space development.For underground engineering construction, usually adopt cut and cover method, yet building such as urban center commerce, enterprise, finance, local-style dwelling houses are intensive, heavy traffic, land price costliness, intensive underground utilities and the restriction of underground structure in addition, make the part engineering be difficult to adopt open-cut, therefore, in the domestic subway construction, the ratio of tunneling subway engineering shows a rising trend.
Because the geological conditions difference, the form of structure of tunneling subway engineering and the job practices that adopts differ greatly, so the form of structure in China's underground space construction and tunneling worker method also present multifarious characteristics.Hole method, PBA worker's method, hole stake method, double side wall pilot tunnel method during the more tunneling worker method of present domestic application comprises, CRD method etc., the common feature of these methods is the short or insufficient rigidity of digging process advance support, face self-stable ability deficiency need face that certain self-stable ability is arranged, if need be reinforced to the face stratum, namely increase the duration, increase cost again, construction quality also is difficult to guarantee simultaneously, and cave-in accident often takes place.Therefore tunneling job practices at present commonly used seldom adopts in the weak especially area of southern country rock.These method work progresss need excavation soil body supporting more earlier simultaneously, even therefore take various ancillary methods, still have that surface settlement is big, security risk is high, be difficult to satisfy problems such as upper pipeline and important building distortion, for the precipitation area in hardship even can't the tunneling construction.The working space of existing tunneling worker method is narrow simultaneously, is not suitable for adopting mechanical execution, and it is big that work progress relies on operator's experience composition, so work progress often has some casualties and burst accident takes place.
As from the foregoing, be necessary to provide a kind of underground construction tunneling job practices and underground station, it can be applicable to any soft stratum, especially can control sedimentation well in the soft stratum shallow at buried depth, that span is big, groundwater table is high, and have work progress degree of safety height, advantage that mechanization degree is high.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of any soft stratum that can be applicable to, especially can control sedimentation well in the soft stratum shallow at buried depth, that span is big, groundwater table is high, and have work progress degree of safety height, underground construction tunneling job practices and underground station that mechanization degree is high.
According to an aspect of the present invention, provide the underground construction tunneling job practices under a kind of, the weak condition of country rock shallow for buried depth, having comprised:
In the working pit in the underground construction outside along top and peripheral vertically some evenly distributed, the mutual interlocks of jacking of dual-side and the steel pipe of peripheral solder wing plate of described underground engineering structure;
In time excavate in the steel pipe in the jack-in process and the interior soil body of adjacent steel pipe wing plate institute's bag scope, and adopt connector that adjacent steel pipe transverse is connected;
The two ends of sealing steel pipe two ends and adjacent steel pipe scope that wing plate wraps, and in steel pipe and the adjacent steel pipe wing plate institute bag scope placing of concrete, make the steel pipe of mutual interlock form whole stressed board wall, namely mould is built preliminary bracing in advance;
Step excavation underground construction inside subject structure central sill, the post corresponding position soil body, and behind soil excavation, in time perform beam, the rod structure of agent structure; And perform each laminate of agent structure, wall construction with soil excavation the time.
Wherein, described step excavation underground construction inside subject structure central sill, the post corresponding position soil body, and behind soil excavation, in time perform beam, the rod structure of agent structure; And perform each laminate of agent structure, wall construction with soil excavation the time, specifically comprise:
First time pilot tunnel vertically excavated at position at agent structure one foundation beam earlier, and applies splash guard and bottom girder under the bottom girder in first time pilot tunnel;
Above first time pilot tunnel and the vertical excavation first little foundation ditch in the top longeron position corresponding with described bottom girder, and in the first little foundation ditch, apply top longeron waterproof top sheet and top longeron; And
The hole at center pillar place above first time pilot tunnel of excavation between first time pilot tunnel and the first little foundation ditch; And in described hole, apply first column that connects described bottom girder and described top longeron;
Perform other one or more groups bottom girders, column, top longitudinal beam structure in the agent structure by same order;
After treating that many groups bottom girder, column, the construction of top longeron in the agent structure finishes, the above soil body of plate in the longitudinal divisions excavation station hall layer, and perform the reinforced concrete structure of middle longeron, middle plate;
Treat longeron, middle plate reach design strength 80% after, stride the soil body in the excavation to described underground construction bottom, stride base plate waterproofing in performing and build in stride underplate concrete;
Stride in treating after underplate concrete reaches design strength 80%, the longitudinal divisions excavation end bay soil body is to described underground construction bottom, and every segment length is not more than the end bay span, performs the end bay base plate waterproofing and builds the end bay underplate concrete.Treat base plate reach design strength 80% after, vertically excavate next section end bay soil body to described underground construction bottom, perform the end bay base plate waterproofing and build the end bay underplate concrete.
Preferably, the agent structure of described underground construction comprises two groups of bottom girders, column, top longitudinal beam structure, and described other group of bottom girder, column, top longeron apply behind excavation second time pilot tunnel, the second little foundation ditch and second hole respectively; Wherein,
Column between the interior top longeron of bottom girder in second time pilot tunnel and the second little foundation ditch is second column;
In the first little foundation ditch and the second little foundation ditch, perform respectively finish the top longeron after, the soil body between the first little foundation ditch and the second little foundation ditch excavated so that the first little foundation ditch and the second little foundation ditch are communicated with, and strides top board in applying.
Wherein, first time pilot tunnel and second time pilot tunnel carry out supporting by grid and sprayed mortar, and
The side wall of the first little foundation ditch and the second little foundation ditch and base plate all adopt grid and sprayed mortar to carry out supporting.
Wherein, be equipped with preformed hole on the described every steel pipe, the described connector that utilizes is specially adjacent steel pipe transverse connection:
In a described steel pipe, the preformed hole of described connector from this steel pipe passed, and penetrate the preformed hole of adjacent steel pipe, and at the two ends of described connector strengthening stud is installed, wherein,
Described connector is bar dowel or crab-bolt.
Further, in described excavation, stride the soil body to the process of described underground construction bottom, in excavating a part, stride the soil body after, in described, set up below the plate for the interim bracket support of supporting described plate,
Described interim bracket support fixation is built on the steel pipe of preliminary bracing in described leading mould.
Preferably, the two ends of described steel pipe two ends and adjacent steel pipe scope that wing plate wraps utilize the shutoff plate to seal; And
Placing of concrete is specially in steel pipe and the adjacent steel pipe wing plate institute bag scope:
Insert the concrete casting pipe at an end of steel pipe and adjacent steel pipe scope that wing plate wraps, the other end inserts stack, and by described pouring pipe placing of concrete in steel pipe and the adjacent steel pipe wing plate institute bag scope.
According to a further aspect in the invention, a kind of underground station also is provided, the both walls that comprises top board, base plate and station hall layer, the both walls of described top board, station hall layer and base plate surround the main support of described underground station, described underground station also comprises steel pipe supporting frame, middle plate, first steel pipe post and second steel pipe post, wherein
Described top board is provided with the first top longeron and the second top longeron, and described base plate is provided with first bottom girder and second bottom girder, and first steel pipe post is arranged between the first top longeron and first bottom girder; Second steel pipe post is arranged between the second top longeron and second bottom girder;
Be respectively equipped with middle longeron on the both walls of station hall layer, middle plate is arranged between the middle longeron of both walls;
The periphery that places described main support is set up in described steel pipe supporting.
Further, also be provided with waterproofing course between described steel pipe supporting frame and the main support.
Wherein, described steel pipe supporting frame by some spacings equate, the steel pipe of interlock and peripheral solder wing plate constitutes mutually, described adjacent steel pipe wing plate institute bag scope constitutes enclosure space, in described steel pipe and the adjacent steel pipe wing plate institute bag scope in concrete perfusion.
As from the foregoing, the job practices among the present invention was at first carried out leading mould and is built preliminary bracing before soil excavation.Because leading mould is built preliminary bracing whole tunneling construction working face is supported, to the intensity no requirement (NR) of the soil body own and digging process over the ground face ring little, even be in the soft stratum of mal-conditions such as buried depth is shallow, span is big, groundwater table height, adopt the tunneling job practices of the present invention still can smooth construction and better controlled surface settlement.Therefore the present invention have that surface settlement is little, work progress degree of safety height, advantage that mechanization degree is high.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.Apparently, the accompanying drawing in below describing only is some embodiments of the present invention, for those of ordinary skills, can also obtain other embodiment and accompanying drawing thereof according to these accompanying drawing illustrated embodiments.
Fig. 1 shows the flow chart of steps of underground construction tunneling job practices among the present invention;
Fig. 2 shows the sectional view of the steel pipe of mutual interlock among the present invention;
Fig. 3 shows bottom girder, first column, the construction of top longeron finish after structural representation;
During showing, Fig. 4 strides the structural representation after top board construction finishes;
During showing, Fig. 5 strides the structural representation after the base plate construction finishes;
Fig. 6 shows the end bay underplate concrete and builds structural representation after finishing;
Fig. 7 shows the structural representation of underground station;
Fig. 8 shows the sectional view of the steel pipe of mutual interlock in the steel pipe supporting frame.
The specific embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to accompanying drawing and enumerate preferred embodiment, the present invention is described in more detail.Yet, need to prove that many details of listing in the manual only are in order to make the reader to one or more aspects of the present invention a thorough understanding be arranged, even if there are not these specific details also can realize these aspects of the present invention.
Fig. 1 shows the flow chart of steps of underground construction tunneling job practices among the present invention, as shown in Figure 1, may further comprise the steps:
S101: along vertical some evenly distributed, the mutual interlocks of jacking in top and dual-side periphery of underground engineering structure and the steel pipe of peripheral solder wing plate, the wing plate between the adjacent steel pipe makes the space between the adjacent steel pipe realize sealing in the working pit in the underground construction outside.
Fig. 2 shows the sectional view of the steel pipe of mutual interlock among the present invention.As shown in Figure 2, the left and right sides of steel pipe 1 is welded with 11, two blocks of wing plates 11 of two blocks of wing plates respectively about steel pipe transverse axis symmetry and the distance between the two diameter less than steel pipe among the present invention, and the wing plate 11 of the left and right sides is about steel pipe longitudinal axis symmetry.
Simultaneously, also be welded with between a side of steel pipe 1, the two blocks of wing plates 11 between two blocks of wing plates 11 of channel-section steel 12, opposite side also be welded with " T " type clamping device 13.Have breach in the middle of channel-section steel 12 bottoms, " T " the upper end width of type clamping device 13 is greater than the width of the breach of channel-section steel 12.
After steel pipe 1 jacking, another root steel pipe " T " type clamping device 13 penetrates back jackings in the channel-section steel 12 by the breach of the channel-section steel 12 of jacking steel pipe, thereby realizes the interlock between the adjacent steel pipe.。Wing plate 11 between the adjacent steel pipe overlaps mutually, thereby makes the space sealing between the adjacent steel pipe.
Among the present invention, steel pipe 1 adopts pipe jacking method, will control direction during steel pipe 1 jacking construction well, must not deflection.Preferably, among the present invention between the adjacent steel pipe 1 parallel jacking and spacing equate that the length of its spacing is determined by construction requirement.The diameter of steel tube that uses in the present embodiment is 0.8～1.0m.
S102: in time excavate in the steel pipe in the jack-in process and the soil body in 11 bag scopes of adjacent steel pipe wing plate, and utilize connector that adjacent steel pipe transverse is connected.
All have some preformed hole (not shown)s on each steel pipe 1 in the embodiment of the invention.Utilizing connector 14 that adjacent steel pipe transverse is connected is specially: in a steel pipe preformed hole of connector 14 by this steel pipe passed, and penetrate the preformed hole of adjacent steel pipe, and at the two ends of connector strengthening stud is installed, thereby two adjacent steel pipes are connected.In the embodiment of the invention, connector 14 is bar dowel or crab-bolt.
S103: the two ends of sealing steel pipe two ends and adjacent steel pipe wing plate 11 scope of wrap, and in steel pipe and 11 bag scopes of adjacent steel pipe wing plate concreting, make the steel pipe of mutual interlock form the stressed board wall of integral body, namely form leading mould and build preliminary bracing.
After adjacent steel pipe 1 connects successively, utilize the two ends of shutoff plate sealing steel pipe and adjacent steel pipe wing plate 11 scope of wrapping.After treating 11 bag scope sealings of steel pipe and adjacent steel pipe wing plate, at one end insert the concrete casting pipe, the other end inserts stack, and by pouring pipe placing of concrete in steel pipe and 11 bag scopes of adjacent steel pipe wing plate, make steel pipe independently form whole stressed board wall, namely leading mould is built preliminary bracing.
S104: treat that leading mould builds after preliminary bracing reaches design strength, the agent structure central sill of step excavation underground construction inside, the soil body of post corresponding position, and behind soil excavation, in time perform beam, rod structure in the agent structure, to form the support to preliminary bracing; And each laminate, the wall construction that apply agent structure with soil excavation the time, finish underground construction tunneling construction.
Wherein, the agent structure central sill of step excavation underground construction inside, the soil body of post corresponding position, and behind soil excavation, in time perform beam, rod structure in the agent structure, to form the support to preliminary bracing; And each laminate, the wall construction that apply agent structure with soil excavation the time, comprise following concrete steps:
The first step, vertical first time pilot tunnel 2 of excavation at the position of a foundation longeron correspondence of agent structure, afterwards on bottom girder top and the vertical excavation first little foundation ditch 3 in the top longeron position corresponding with described bottom girder, and above first time pilot tunnel 2 of excavation between first time pilot tunnel 2 and the first little foundation ditch 3 first hole at center pillar place.In first time pilot tunnel 2 of described excavation, apply splash guard 4 and bottom girder 5 under the bottom girder, in first hole, apply first column 6, and in the described first little foundation ditch 3, apply top longeron waterproof top sheet and top longeron 7.Fig. 3 shows bottom girder, first column, the construction of top longeron finish after structural representation.
After treating that a foundation longeron, first column 6, top longeron 7 constructions in the agent structure are finished, perform one or more groups beam, rod structure by same order.
Preferably, the agent structure among the present invention comprises two groups of beams, rod structure.Wherein, another group beam, rod structure second hole by excavating second time pilot tunnel, the second little foundation ditch and center pillar place, second time pilot tunnel top is to apply bottom girder, top longeron 7 and second column respectively.
In the embodiment of the invention, first time pilot tunnel 2 and second time pilot tunnel utilize benching tunnelling method longitudinal divisions excavation, and first time pilot tunnel 2 and second time pilot tunnel behind the excavation carry out preliminary bracing by grid and sprayed mortar.Preferably, reserve gusset plate on first the grid of first time pilot tunnel 2 and second time pilot tunnel, be convenient to back cover grid connection between follow-up pilot tunnel.
The side wall of the first little foundation ditch and the second little foundation ditch and base plate adopt grid and sprayed mortar to carry out preliminary bracing, and grid top and leading mould are built the steel pipe welding of preliminary bracing.
Further, excavate the soil body between the first little foundation ditch 3 and the second little foundation ditch, and pour into steel concrete between longeron top, the top longeron 7 in the longeron 75 and second little foundation ditch of the longeron top, top of the first little foundation ditch 3, make two top longerons 7 stride top board 8 in connecting to form.During showing, Fig. 4 strides the structural representation after top board construction finishes.
Second step: longitudinal divisions excavates the above soil body of plate in the station hall layer, and performs the reinforced concrete structure of middle longeron 9, middle plate 10.
The 3rd step: in treating longeron 9, middle plate 10 reach design strength 80% after, stride the soil body in the excavation to the underground construction bottom, stride base plate waterproofing in performing and build in stride underplate concrete 11.During showing, Fig. 5 strides the structural representation after the base plate construction finishes.
Preferably, in described excavation, stride the soil body to the process of described underground construction bottom, in excavating a part, stride the soil body after, below middle plate, set up for the interim bracket that supports plate and support 12, to improve safety of construction.Wherein, interim bracket support fixation is built on the steel pipe of preliminary bracing in leading mould.
The 4th step: stride in treating after underplate concrete reaches design strength 80%, the longitudinal divisions excavation end bay soil body is to the underground construction bottom, and the length of every section end bay soil body is not more than the end bay span, treats that the end bay soil excavation performs the end bay base plate waterproofing and builds the end bay underplate concrete to the underground construction bottom.
In the embodiment of the invention, after the design strength of every section end bay underplate concrete reaches 80%, can excavate next section end bay soil body and perform the end bay base plate waterproofing and build end bay underplate concrete 13.Fig. 6 shows the end bay underplate concrete and builds structural representation after finishing.
The 5th step: apply station hall layer residue side wall and waterproof roofing layer, build side wall and top board remaining structure.
S105: after treating that agent structure reaches design strength, underground engineering construction finishes.
By such scheme as can be known, the job practices among the present invention was at first carried out leading mould and is built preliminary bracing before soil excavation.Leading mould is built the whole stressed board wall that preliminary bracing forms for the slit concrete perfusion in the steel pipe of interlock mutually and between the steel pipe.Because the leading mould among the present invention is built preliminary bracing whole tunneling construction working face is supported, to the intensity no requirement (NR) of the soil body own and digging process over the ground face ring little, even be in the soft stratum of mal-conditions such as buried depth is shallow, span is big, groundwater table height, adopt the tunneling job practices of the present invention still can smooth construction and better controlled surface settlement.Therefore the present invention have that surface settlement is little, work progress degree of safety height, advantage that mechanization degree is high.
According to a further aspect in the invention, also provide a kind of underground station.Fig. 7 shows the structural representation of underground station.As shown in Figure 7, the underground station comprises the both walls 707 of steel pipe supporting frame 701, top board 702, middle plate 703, base plate 704, first steel pipe post 705, second steel pipe post 706 and station hall layer, wherein,
Steel pipe supporting frame 701 comprises the steel pipe 801 of mutual interlock.Fig. 8 shows the sectional view of the steel pipe of mutual interlock in the steel pipe supporting frame.As shown in Figure 8, the left and right sides of steel pipe 801 is welded with 802, two blocks of wing plates 802 of two blocks of wing plates respectively about steel pipe transverse axis symmetry and the distance between the two diameter less than steel pipe, and the wing plate 802 of the left and right sides is about steel pipe longitudinal axis symmetry.Wing plate 802 between the adjacent steel pipe 801 overlaps mutually, makes the space sealing between the adjacent steel pipe.
Simultaneously, also be welded with between a side of steel pipe 801, the two blocks of wing plates 802 between two blocks of wing plates 802 of channel-section steel 803, opposite side and also be welded with T-shape clamping device 804.The upper end width of T-shape clamping device 804 is greater than the width of the breach of channel-section steel 803.
Further, also have some preformed hole (not shown)s on each steel pipe 801.Realize laterally connecting by penetrate connector 805 in preformed hole between the adjacent steel pipe, wherein, strengthening stud is installed at the two ends of connector 805.In the embodiment of the invention, connector 805 is bar dowel or crab-bolt.
The both walls 707 of top board 702, station hall layer and base plate 704 surround the main support of underground station;
Steel pipe supporting frame 701 is arranged at the periphery of main support, and supporting is provided when being used to underground station tunneling construction.
Further, be provided with the waterproofing course (not shown) between steel pipe supporting frame 701 and the main support.Wherein, described waterproofing course comprises top board 702 waterproofing courses between top board 702 and the steel pipe supporting frame 701, base plate 704 waterproofing courses of base plate 704 downsides and the side wall waterproofing course between station hall layer both walls 707 and the steel pipe supporting frame 701.
The above is preferred embodiment of the present invention only, is not for restriction protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. underground construction tunneling job practices comprises:
In the working pit in the underground construction outside along top and peripheral vertically some evenly distributed, the mutual interlocks of jacking of dual-side and the steel pipe of peripheral solder wing plate of described underground engineering structure;
In time excavate in the steel pipe in the jack-in process and the interior soil body of adjacent steel pipe wing plate institute's bag scope, and adopt connector that adjacent steel pipe transverse is connected;
The two ends of sealing steel pipe two ends and adjacent steel pipe scope that wing plate wraps, and in steel pipe and the adjacent steel pipe wing plate institute bag scope placing of concrete, make the steel pipe of mutual interlock form whole stressed board wall, namely mould is built preliminary bracing in advance;
Step excavation underground construction inside subject structure central sill, the post corresponding position soil body, and behind soil excavation, in time perform beam, the rod structure of agent structure, form the support to preliminary bracing; And perform each laminate of agent structure, wall construction with soil excavation the time.
2. job practices according to claim 1, wherein, described step excavation underground construction inside subject structure central sill, the post corresponding position soil body, and behind soil excavation, in time perform beam, the rod structure of agent structure; And perform each laminate of agent structure, wall construction with soil excavation the time, specifically comprise:
First time pilot tunnel vertically excavated at position at agent structure one foundation beam earlier, and applies splash guard and bottom girder under the bottom girder in first time pilot tunnel;
Above first time pilot tunnel and the vertical excavation first little foundation ditch in the top longeron position corresponding with described bottom girder, and in the first little foundation ditch, apply top longeron waterproof top sheet and top longeron; And
The hole at center pillar place above first time pilot tunnel of excavation between first time pilot tunnel and the first little foundation ditch; And in described hole, apply first column that connects described bottom girder and described top longeron;
Perform other one or more groups bottom girders, column, top longitudinal beam structure in the agent structure by same order;
After treating that many groups bottom girder, column, the construction of top longeron in the agent structure finishes, the above soil body of plate in the longitudinal divisions excavation station hall layer, and perform the reinforced concrete structure of middle longeron, middle plate;
Treat longeron, middle plate reach design strength 80% after, stride the soil body in the excavation to described underground construction bottom, stride base plate waterproofing in performing and build in stride underplate concrete;
Stride in treating after underplate concrete reaches design strength 80%, the longitudinal divisions excavation end bay soil body is to described underground construction bottom, and every segment length is not more than the end bay span, performs the end bay base plate waterproofing and builds the end bay underplate concrete.Treat base plate reach design strength 80% after, vertically excavate next section end bay soil body to described underground construction bottom, perform the end bay base plate waterproofing and build the end bay underplate concrete.
3. job practices according to claim 2, wherein, the agent structure of described underground construction comprises two groups of bottom girders, column, top longitudinal beam structure, and described other group of bottom girder, column, top longeron apply behind excavation second time pilot tunnel, the second little foundation ditch and second hole respectively; Wherein,
Column between the interior top longeron of bottom girder in second time pilot tunnel and the second little foundation ditch is second column;
In the first little foundation ditch and the second little foundation ditch, perform respectively finish the top longeron after, the soil body between the first little foundation ditch and the second little foundation ditch excavated so that the first little foundation ditch and the second little foundation ditch are communicated with, and strides top board in applying.
4. job practices according to claim 3, wherein, first time pilot tunnel and second time pilot tunnel carry out supporting by grid and sprayed mortar, and
The side wall of the first little foundation ditch and the second little foundation ditch and base plate all adopt grid and sprayed mortar to carry out supporting.
5. job practices according to claim 1 wherein, is equipped with preformed hole on the described every steel pipe, and the described connector that utilizes is specially adjacent steel pipe transverse connection:
In a described steel pipe, the preformed hole of described connector from this steel pipe passed, and penetrate the preformed hole of adjacent steel pipe, and at the two ends of described connector strengthening stud is installed, wherein,
Described connector is bar dowel or crab-bolt.
6. job practices according to claim 2 wherein, is striden the soil body to the process of described underground construction bottom in described excavation, in excavating a part, stride the soil body after, in described, set up below the plate for the interim bracket support of supporting described plate,
Described interim bracket support fixation is built on the steel pipe of preliminary bracing in described leading mould.
7. job practices according to claim 1, wherein, the two ends of described steel pipe two ends and adjacent steel pipe scope that wing plate wraps utilize the shutoff plate to seal; And
Placing of concrete is specially in steel pipe and the adjacent steel pipe wing plate institute bag scope:
Insert the concrete casting pipe at an end of steel pipe and adjacent steel pipe scope that wing plate wraps, the other end inserts stack, and by described pouring pipe placing of concrete in steel pipe and the adjacent steel pipe wing plate institute bag scope.
8. underground station, the both walls that comprises top board, base plate and station hall layer, the both walls of described top board, station hall layer and base plate surround the main support of described underground station, it is characterized in that, described underground station also comprises steel pipe supporting frame, middle plate, first steel pipe post and second steel pipe post, wherein
Described top board is provided with the first top longeron and the second top longeron, and described base plate is provided with first bottom girder and second bottom girder, and first steel pipe post is arranged between the first top longeron and first bottom girder; Second steel pipe post is arranged between the second top longeron and second bottom girder;
Be respectively equipped with middle longeron on the both walls of station hall layer, middle plate is arranged between the middle longeron of both walls;
The periphery that places described main support is set up in described steel pipe supporting.
9. underground station according to claim 8 is characterized in that, also is provided with waterproofing course between described steel pipe supporting frame and the main support.
10. underground station according to claim 8, wherein, described steel pipe supporting frame is made of the steel pipe of equal, the mutual interlock of some spacings and peripheral solder wing plate, described adjacent steel pipe wing plate institute bag scope constitutes enclosure space, in described steel pipe and the adjacent steel pipe wing plate institute bag scope in concrete perfusion.
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| CN104863597A (en) * | 2015-05-27 | 2015-08-26 | 北京市市政工程设计研究总院有限公司 | Transverse tunnel cover method for shallow-buried underground excavation large underground space construction |
| CN104963705A (en) * | 2015-07-20 | 2015-10-07 | 上海市机械施工集团有限公司 | Underground space excavating and constructing method |
| CN107100653A (en) * | 2017-05-23 | 2017-08-29 | 中铁四局集团第五工程有限公司 | A kind of flat top wall pipe curtain structure builds the construction method of super Shallow Covered Metro Station |
| CN108930544A (en) * | 2018-07-27 | 2018-12-04 | 中铁十四局集团有限公司 | A kind of broken ground underground large space method of construction |
| CN111287759A (en) * | 2020-02-12 | 2020-06-16 | 中铁五局集团有限公司 | Shallow-buried close-connection underground excavation tunnel construction method |
| CN113279787A (en) * | 2021-05-24 | 2021-08-20 | 苏州大学 | Construction method for building pipe curtain supporting structure of ultra-shallow buried large-section underground excavation subway station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104863597A (en) * | 2015-05-27 | 2015-08-26 | 北京市市政工程设计研究总院有限公司 | Transverse tunnel cover method for shallow-buried underground excavation large underground space construction |
| CN104963705A (en) * | 2015-07-20 | 2015-10-07 | 上海市机械施工集团有限公司 | Underground space excavating and constructing method |
| CN104963705B (en) * | 2015-07-20 | 2017-10-27 | 上海市机械施工集团有限公司 | A kind of underground space tunneling construction method |
| CN107100653A (en) * | 2017-05-23 | 2017-08-29 | 中铁四局集团第五工程有限公司 | A kind of flat top wall pipe curtain structure builds the construction method of super Shallow Covered Metro Station |
| CN108930544A (en) * | 2018-07-27 | 2018-12-04 | 中铁十四局集团有限公司 | A kind of broken ground underground large space method of construction |
| CN111287759A (en) * | 2020-02-12 | 2020-06-16 | 中铁五局集团有限公司 | Shallow-buried close-connection underground excavation tunnel construction method |
| CN111287759B (en) * | 2020-02-12 | 2021-08-24 | 中铁五局集团有限公司 | Shallow-buried close-connection underground excavation tunnel construction method |
| CN113279787A (en) * | 2021-05-24 | 2021-08-20 | 苏州大学 | Construction method for building pipe curtain supporting structure of ultra-shallow buried large-section underground excavation subway station |
| CN113279787B (en) * | 2021-05-24 | 2024-05-14 | 苏州大学 | Construction method for constructing pipe curtain supporting structure of ultra-shallow buried large-section underground excavation subway station |
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