CN103741716A - Method for foundation pit connecting channel construction under semi-reverse construction method and connecting auxiliary structure - Google Patents

Method for foundation pit connecting channel construction under semi-reverse construction method and connecting auxiliary structure Download PDF

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Publication number
CN103741716A
CN103741716A CN201310745537.6A CN201310745537A CN103741716A CN 103741716 A CN103741716 A CN 103741716A CN 201310745537 A CN201310745537 A CN 201310745537A CN 103741716 A CN103741716 A CN 103741716A
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China
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power transmission
construction
foundation pit
transmission support
compartment
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CN201310745537.6A
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CN103741716B (en
Inventor
戴中剑
顾阳华
李涛
张捷
邱晨斌
柯辰良
钱玮
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Shanghai Construction No 2 Group Co Ltd
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Shanghai Construction No 2 Group Co Ltd
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Abstract

The invention provides a method for foundation pit connecting channel construction under a semi-reverse construction method and a connecting auxiliary structure. An integral post-cast strip space from bottom to top is arranged on a post-construction foundation pit structure which is in a post-construction foundation pit and is a certain distance away from a separating surrounding part needing removing, a force transmission support is arranged between a post-construction structure plate and a division wall, and temporary vertical supports are installed below every structural beam which is overhung due to the arrangement of the post-cast strip space. By arranging a post-cast strip structure, not only can mutual influences between successively constructed foundation pit structures caused by different kinds of sedimentation be reduced, but also an enough operation surface can be provided, structural connecting detail node construction is easy to operate, removal of the division wall is facilitated particularly, the division wall does not need to be cut in a narrow space, abandoned concrete does not need to be subject to lightering back and forth between layers, so that the construction cost is reduced, construction progress is accelerated, resources are saved, and the method has the advantage of low-carbon construction.

Description

Under semi-inverse method between foundation ditch communication channel construction method and be communicated with supplementary structure
Technical field
The realm of building construction of the present invention, relates in particular under a kind of semi-inverse method between foundation ditch communication channel construction method and is communicated with supplementary structure.
Background technology
Along with the development of modern architecture construction technology, underground structure is also to diversification structural development, semi-inverse method technology obtains the employing of more and more engineerings, coordinates the different functional requirements that use, and many foundation ditches are communicated with design and have brought larger difficulty to underground engineering construction.
At present, it is all two foundation ditches underground structures of having constructed separately that Adjacent Pit Underground Construction need to reach the constructure scheme that structure is communicated with, compartment wall is between the two because of contrary sequence method technical support needs, cannot when two foundation pit structure constructions, synchronously remove, therefore compartment wall must be retained between two foundation pit structures, finally can remove.
So construction method has increased difficulty of construction undoubtedly, be mainly manifested in: 1. Adjacent Pit structure connects a lot of thin portions of existence connected nodes, and after two foundation pit structures are all constructed, the compartment wall being sandwiched between the two need to dig out between structure, fill up syndeton, difficulty of construction is quite large again.2. because two foundation pit structures are close to compartment wall; now compartment wall serves as the effect of going along with sb. to guard him support; after compartment wall is removed, semi-inverse method structure, rear construction foundation pit structure, in the state of encorbelmenting, have been removed compartment wall place and have been equivalent to structural openings; when hole is larger; the protection of Rimless beam, can produce stress and concentrate, and extremely easily destroys completed underground structure; cause the generation in crack, communication channel construction quality is impacted.3. after compartment wall is removed, structure connection between two foundation pit structures runs into situation and is: reinforcing bar, template are all to complete and fill a vacancy in the space of very sealing, casting and compacting of concrete is difficult to once complete, must assist the techniques such as slip casting, grouting to complete structure connects, construction sequence is loaded down with trivial details, and quality cannot guarantee simultaneously.
Therefore, how a kind of construction quality that can greatly reduce foundation ditch communication channel place structure connection construction difficulty, guarantee underground engineering structure is provided, and have and economize on resources, communication channel construction method and to be communicated with supplementary structure be those skilled in the art's technical problems urgently to be resolved hurrily between foundation ditch under the semi-inverse method of the social benefit of low-carbon (LC) construction.
Summary of the invention
The object of the present invention is to provide under a kind of semi-inverse method between foundation ditch communication channel construction method and be communicated with supplementary structure, greatly reduce foundation ditch communication channel place structure connection construction difficulty, guarantee the construction quality of underground engineering structure, and have and economize on resources, the social benefit of low-carbon (LC) construction.
To achieve the above object, the present invention adopts following technical scheme:
1. a communication channel construction method between foundation ditch under semi-inverse method, for the first construction foundation pit structure and the rear construction foundation pit structure that are positioned at compartment wall both sides are communicated with, comprises the steps:
Step 1: the first construction foundation pit structure of constructing in advance;
Step 2, after rear construction foundation pit soil excavation completes, the base plate power transmission of first constructing support, then construction foundation pit base plate after construction, make to stay and establish space, ater-casting between rear construction foundation pit base plate and described compartment wall;
Step 3: in rear construction foundation pit, successively at every, because arranging under the structural beams of encorbelmenting in space, ater-casting, vertical support is installed from the bottom to top, after vertical support installation, set up structure framed bent and template, when the lower placing of reinforcement of structural slab installs, middle plate power transmission support is set between this structural slab and compartment wall, build this structural slab, make to stay and establish space, ater-casting between this structural slab and described compartment wall, until stay between every layer of structural slab and described compartment wall and establish the space, overall ater-casting connecting from the bottom to top from base plate;
Step 4, after rear construction foundation pit structure construction, compartment wall is from top to bottom successively removed, when removing to middle plate power transmission support place, employing is plate power transmission support punishment partition wall spreading plate power transmission support in this in time in jumping one mode is removed, make plate power transmission support in this continue to put forth effort on corresponding first construction foundation pit structural slab, until compartment wall is removed the bottom to rear construction foundation pit base plate;
Step 5, successively formerly returns from the bottom to top and builds late poured band structure between construction foundation pit structural slab and rear construction foundation pit structural slab, and plate power transmission support in successively removing, or successively middle plate power transmission support is built into the inside concrete of corresponding rear construction foundation pit structural slab;
Step 6, after waiting described late poured band structure maintenance to complete, removes described vertical support.
Preferably, the width in space, described ater-casting is than the large 200-400 millimeter of the width of described compartment wall.
Preferably, at every, because arranging on the substructure plate below the structural beams of encorbelmenting in space, ater-casting, stay the pre-embedded steel slab of establishing for vertical support is installed in advance.
Preferably, in described step 4, described employing in jumping one mode is removed plate power transmission support punishment partition wall and in time spreading in this plate power transmission support refer to, in with layer in plate power transmission support dispersed choose a part in plate power transmission support corresponding compartment wall part and remove in advance, and plate power transmission in a described part is supportted to timely spreading to the same layer structural slab of first construction foundation pit; Then, remove in other plate power transmission support punishment partition wall, and by described in other plate power transmission support timely spreading to the same layer structural slab of first construction foundation pit.
Preferably, in described step 2, when power transmission is supportted corresponding structural slab and is base plate, described power transmission support is supportted as base plate power transmission, described base plate power transmission support is a reinforced concrete structure, described base plate power transmission support is built in the below of rear construction foundation pit base plate and post-casting zone bottom plate, and one end of described base plate power transmission support is fixedly connected on the bottom of rear construction foundation pit base plate, and the other end is fixedly connected with compartment wall.
Preferably, in described step 3, the quantity of described middle plate power transmission support is multiple, described middle plate power transmission support along continuous straight runs is arranged at intervals between every layer of structural slab and compartment wall of rear construction foundation pit, and one end of described middle plate power transmission support anchors into certain length in rear constructing structure plate, the other end is fixedly connected with reinforcing bar in compartment wall.
Preferably, being arranged in the level interval supportting with the adjacent described plate power transmission of layer is 1500-2500 millimeter, and the diameter range of described middle plate power transmission support is 30-40 millimeter.
The invention also discloses under a kind of semi-inverse method and be communicated with supplementary structure between foundation ditch; for carrying out structural defence at first construction foundation pit structure and the rear construction foundation pit structure handshaking procedures of compartment wall both sides; comprise power transmission support and vertical support; between each layer of structural slab of rear construction foundation pit and the compartment wall that needs to remove, stay and establish space, ater-casting; described power transmission support is arranged at respectively between the each layer of structural slab that compartment wall is corresponding with rear construction foundation pit, and described vertical support is arranged at respectively every because arranging below the structural beams of encorbelmenting in space, described ater-casting.
Preferably, the width in space, described ater-casting is than the large 200-400 millimeter of the width of described compartment wall.
Preferably, when power transmission is supportted corresponding structural slab and is base plate, described power transmission support is supportted as base plate power transmission, described base plate power transmission support is a reinforced concrete structure, described base plate power transmission support is built in the below of rear construction foundation pit base plate and post-casting zone bottom plate, one end of described base plate power transmission support is fixedly connected on the bottom of rear construction foundation pit base plate, and the other end is fixedly connected with compartment wall; When power transmission support corresponding be the structural slab except base plate time, plate power transmission support in described power transmission support conduct, the quantity of described middle plate power transmission support is multiple, described middle plate power transmission support along continuous straight runs is arranged at intervals between every layer of structural slab and compartment wall of rear construction foundation pit, one end of described middle plate power transmission support anchors into certain length in rear constructing structure plate, and the other end is fixedly connected with reinforcing bar in compartment wall.
Under semi-inverse method provided by the invention between foundation ditch communication channel construction method and be communicated with supplementary structure, the separation that rear construction foundation pit structure in rear construction foundation pit is removed apart from needs is gone along with sb. to guard him a distance a space, overall ater-casting is from the bottom to top set, the structural slab that place, space, ater-casting need to disconnect rear construction foundation pit structure is set, structural beams, for meeting the horizontal power transmission design of foundation pit structure under semi-inverse method, power transmission support is set between rear constructing structure plate and compartment wall, at every, because being set, the structural beams of encorbelmenting in space, ater-casting interim vertical support is installed under hereinafter to be referred as cantilevered structure beam.By late poured band structure is set, formerly between construction foundation pit structural slab and rear construction foundation pit structural slab, return from the bottom to top and build late poured band structure, not only can reduce between the foundation pit structure of successively construction because different separately sedimentations interacts, thereby better protect whole foundation pit structure engineering, but also can provide enough operating surfaces, for structure, connect thin portion node construction and be more prone to operation, and it is particularly convenient for the dismounting of compartment wall, without cutting broken compartment wall at narrow space also without lighter back and forth useless concrete between each layer, thereby can reduce construction cost, accelerating construction progress, economize on resources, there is low-carbon (LC) construction advantage, and then make its with under traditional semi-inverse method, between foundation ditch, compared with communication channel construction method, have easy to operate, operation is simplified, reliability, the feature that implementation is high.
In sum, the present invention is compared with general prior art:
1, adopt many foundation ditches communication channel place to stay the construction method of establishing ater-casting, use the overall merit of its structure power transmission, connection construction technology, remove with many foundation ditches of tradition compartment wall, the structure construction method of filling a vacancy has easy to operate, low in resources consumption, operation simplification, reliability, feature that implementation is high.
2, in this novel construction technology, increase ater-casting and arrange, can reduce the communication channel structure of successively construction there is some difference sedimentation and the impact on architecture quality that produces, better protect construction of underground structure, there is economical synthesis benefit.
Accompanying drawing explanation
Under semi-inverse method of the present invention between foundation ditch communication channel construction method and be communicated with supplementary structure by following embodiment and accompanying drawing, provided.
Fig. 1 is plane (overlooking) structural representation that is communicated with supplementary structure under the semi-inverse method of the embodiment of the present invention 1 between foundation ditch;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1;
Fig. 3 is the schematic diagram that arranges that in the embodiment of the present invention 1, base plate power transmission is supportted;
Fig. 4 is the schematic diagram that arranges that in the embodiment of the present invention 1, middle plate power transmission is supportted;
Fig. 5 be in the embodiment of the present invention 1 vertical support schematic diagram is set;
Fig. 6 is the step 4 structural representation of communication channel construction method between foundation ditch under the semi-inverse method of the embodiment of the present invention 2;
Fig. 7 is the step 6 structural representation of communication channel construction method between foundation ditch under the semi-inverse method of the embodiment of the present invention 2;
In figure, 1, first construction in plated construction; 2, compartment wall; 3, middle board post poured band constuction joint; 4, plated construction in rear construction; 5, middle plate power transmission support; 6, vertical support; 7, late poured band structure; 8, bottom plate rear pouring tape constuction joint; 9, rear construction foundation pit base plate; 10, base plate power transmission support; 11, base plate power transmission support reinforcing bar; 12, the main muscle of wall; 13, rear construction foundation pit baseplate reinforcing bar; 14, in compartment wall without remove wall section; 15, connecting reinforcement in first construction foundation pit structure; 16, pre-embedded steel slab; 17, connect shaped steel; 18, pre-buried force bearing plate; 19, shelve angle bar; 20, post-casting zone bottom plate; 21-structural beams; 22-structural column.
The specific embodiment
Below will under semi-inverse method of the present invention between foundation ditch communication channel construction method and be communicated with supplementary structure be described in further detail.
Embodiment 1
Refer to Fig. 1 to Fig. 5, the invention also discloses under a kind of semi-inverse method and be communicated with supplementary structure between foundation ditch, for carrying out structural defence at first construction foundation pit structure and the rear construction foundation pit structure handshaking procedures of compartment wall 2 both sides, comprise power transmission support and vertical support 6, between each layer of structural slab of rear construction foundation pit and the compartment wall 2 that needs to remove, stay and establish space, ater-casting, described power transmission support is arranged at respectively between compartment wall 2 and each layer of structural slab corresponding to rear construction foundation pit, described vertical support 6 is arranged at respectively every because structural beams 21 belows of encorbelmenting in space, described ater-casting are set.
Preferably, the width in space, described ater-casting is than the large 200-400 millimeter of the width of described compartment wall 2,, that is to say, the width (being simultaneously also the lifting space of compartment wall concrete piece) of late poured band structure 7 is that the double-width of compartment wall adds 200-400 millimeter sum.The width of the late poured band structure 7 of above-mentioned width range, both can guarantee that the width of late poured band structure 7 is unlikely to long, affects structure stress, again can be so that the dismounting of compartment wall 2 and other connect the construction of thin portion node.
When power transmission is supportted corresponding structural slab and is base plate, as shown in Figure 3, described power transmission support is as base plate power transmission support 10, described base plate power transmission support 10 is reinforced concrete structures, described base plate power transmission support 10 is built in the below of rear construction foundation pit base plate and post-casting zone bottom plate to be built, one end of described base plate power transmission support 10 is fixedly connected on the bottom of rear construction foundation pit base plate, and the other end is fixedly connected with compartment wall.
When power transmission support corresponding be that structural slab except base plate is in rear construction during plated construction 4, as shown in Figure 4, and incorporated by reference to Fig. 1 and Fig. 2, plate power transmission support 5 in described power transmission support conduct, the quantity of described middle plate power transmission support 5 is multiple, described middle plate power transmission is supportted between the every layer of structural slab and compartment wall that 5 along continuous straight runs are arranged at intervals at rear construction foundation pit, and one end of described middle plate power transmission support 5 anchors into certain length in rear constructing structure plate, and the other end is fixedly connected with the interior reinforcing bar of compartment wall 2.Preferably, one end of described middle plate power transmission support 5 is fixedly connected with the pre-buried force bearing plate 18 being embedded in advance in rear constructing structure plate, thus make middle plate power transmission support 5 and rear constructing structure plate between be connected more firm.Preferably, the length that one end of described middle plate power transmission support 5 anchors in rear constructing structure plate is 200-500 millimeter, thus make to a certain extent between middle plate power transmission support 5 and rear constructing structure plate be connected more firm.Preferably, the other end of described middle plate power transmission support 5 is fixedly connected with the main muscle 12 of ground wall in compartment wall 2, because wall main muscle 12 in ground is positioned at the inside of compartment wall 2, before connection, need to will after being exposed, wall main muscle 12 in ground be connected together with the steel bar welding of the other end of middle plate power transmission support 5.Be arranged in and make plate power transmission support 5 more firm with being connected of compartment wall 2, in the present embodiment, below the other end of described power transmission support, be provided for supporting that described power transmission supports shelves angle bar 19.Preferably, the diameter range of described middle plate power transmission support 5 is 30-40 millimeters, with the use amount of steel in plate power transmission support 5 in guaranteeing under the horizontal intensity prerequisite of middle plate power transmission support 5, reducing as much as possible.
Preferably, as shown in Figure 5, at every, because arranging on the substructure plate below the structural beams 21 of encorbelmenting in space, ater-casting, stay the pre-embedded steel slab 16 of establishing for vertical support 6 is installed in advance, to guarantee the stability of the vertical support 6 arranging.Described structural beams 21 is arranged in the below of rear construction plated construction 4.Described vertical support 6 has a connection shaped steel 17, the lower end of described connection shaped steel 17 is fixedly connected with described pre-embedded steel slab 16, for example be fixedly connected by welding, the upper end of described connection shaped steel 17 is fixedly connected with because the structural beams 21 of encorbelmenting in space, ater-casting is set with described.
Under semi-inverse method provided by the invention, between foundation ditch, be communicated with supplementary structure, the separation that rear construction foundation pit structure in rear construction foundation pit is removed apart from needs is gone along with sb. to guard him a distance a space, overall ater-casting is from the bottom to top set, and structural slab, even structural column 22 of structural beams 21 that place, space, ater-casting need to disconnect rear construction foundation pit structure are set.For meeting under semi-inverse method the horizontal power transmission design of foundation pit structure, power transmission is set between rear constructing structure plate and compartment wall 2 and supports, at every, because being set, the structural beams of encorbelmenting in space, ater-casting interim vertical support 6 is installed under hereinafter to be referred as cantilevered structure beam.Under above-mentioned semi-inverse method, between foundation ditch, be communicated with supplementary structure, can make cutting descend compartment wall 2 concrete pieces directly hang rear construction foundation pit, compartment wall 2 can arrange late poured band structure 7 after removing, formerly between construction foundation pit structural slab and rear construction foundation pit structural slab, late poured band structure 7 is set, not only can reduce between the foundation pit structure of successively construction because different separately sedimentations interacts, thereby better protect whole foundation pit structure engineering, but also can provide enough operating surfaces, for structure, connect thin portion node construction and be more prone to operation, and it is particularly convenient for the dismounting of compartment wall 2, without cutting broken compartment wall 2 at narrow space also without lighter back and forth useless concrete between each layer, thereby can reduce construction cost, accelerating construction progress, economize on resources, there is low-carbon (LC) construction advantage, and then make its with under traditional semi-inverse method, between foundation ditch, compared with communication channel construction method, have easy to operate, operation is simplified, reliability, the feature that implementation is high.
Embodiment 2
Refer to Fig. 1 to Fig. 8, the present embodiment provides under a kind of semi-inverse method communication channel construction method between foundation ditch, for the first construction foundation pit structure and the rear construction foundation pit structure that are positioned at compartment wall 2 both sides are communicated with, comprises the steps:
Step 1: the first construction foundation pit structure of constructing in advance.
Step 2, as shown in Figure 3, after rear construction foundation pit soil excavation completes, the base plate power transmission of first constructing support, the reserved joint bar being connected with base plate, then the construction foundation pit base plate afterwards of constructing, make to stay between rear construction foundation pit base plate and described compartment wall 2 that to establish space, ater-casting be breach, meanwhile, in base plate as required under the Cantilever Beams of pre-buried upper strata for the pre-embedded steel slab 16 of vertical support 6 is installed.
Preferably, in described step 2, when power transmission is supportted corresponding structural slab and is base plate, described power transmission support is as base plate power transmission support 10, described base plate power transmission support 10 is reinforced concrete structures, described base plate power transmission support 10 is built in the below of rear construction foundation pit base plate and post-casting zone bottom plate, and one end of described base plate power transmission support 10 is fixedly connected on the bottom of rear construction foundation pit base plate, and the other end is fixedly connected with compartment wall 2.
Step 3: refer to Fig. 1, Fig. 2 and Fig. 5, in rear construction foundation pit, successively at every, because arranging, vertical support 6 is installed under the structural beams of encorbelmenting in space, ater-casting from the bottom to top, after vertical support installation 6 completes, set up structure framed bent and template, when the lower placing of reinforcement of structural slab installs, middle plate power transmission support 5 is set between this structural slab and compartment wall 2, build this structural slab, make to stay and establish space, ater-casting between this structural slab and described compartment wall 2, until stay and establish the space, overall ater-casting connecting from the bottom to top between every layer of structural slab and described compartment wall 2 from base plate, as shown in Figure 2.Preferably, the width a in space, described ater-casting is than the large 200-400 millimeter of the width b of described compartment wall 2, that is to say, the width (being simultaneously also the lifting space of compartment wall 2 concrete pieces) of late poured band structure 7 is that the double-width of compartment wall 2 adds 200-400 millimeter sum.The width of the late poured band structure 7 of above-mentioned width range, both can guarantee that the width of ater-casting is unlikely to long, affects structure stress, again can be so that the dismounting of compartment wall 22 and other connect the construction of thin portion node.
Preferably, in described step 3, as shown in Figure 2, and incorporated by reference to consulting Fig. 1 and Fig. 4, the quantity of described middle plate power transmission support 5 is multiple, described middle plate power transmission is supportted between the every layer of structural slab and compartment wall 2 that 5 along continuous straight runs are arranged at intervals at rear construction foundation pit, and one end of described middle plate power transmission support 5 anchors into certain length in rear constructing structure plate, and the other end is fixedly connected with the interior reinforcing bar of compartment wall 2.Preferably, one end of described middle plate power transmission support 5 is fixedly connected with the pre-buried force bearing plate 18 being embedded in advance in rear constructing structure plate, thus make middle plate power transmission support 5 and rear constructing structure plate between be connected more firm.Preferably, the length that one end of described middle plate power transmission support 5 anchors in rear constructing structure plate is 200-500 millimeter, thus make to a certain extent between middle plate power transmission support 5 and rear constructing structure plate be connected more firm.Preferably, the other end of described middle plate power transmission support 5 is fixedly connected with the main muscle 12 of ground wall in compartment wall 2, because wall main muscle 12 in ground is positioned at the inside of compartment wall 2, before connection, need to will after being exposed, wall main muscle 12 in ground be connected together with the steel bar welding of the other end of middle plate power transmission support 5.Be arranged in and make plate power transmission support 5 more firm with being connected of compartment wall 2, in the present embodiment, below the other end of described power transmission support, be provided for supporting that described power transmission supports shelves angle bar 19.Preferably, the diameter range of described middle plate power transmission support 5 is 30-40 millimeters, with the use amount of steel in plate power transmission support 5 in guaranteeing under the horizontal intensity prerequisite of middle plate power transmission support 5, reducing as much as possible.
Step 4, after rear construction foundation pit structure construction, compartment wall 2 is from top to bottom successively removed, when removing extremely middle plate power transmission, support 5 places, employing is plate power transmission support 5 punishment partition walls spreading plate power transmission support 5 in this in time in jumping one mode is removed, make plate power transmission support 5 in this continue to put forth effort on corresponding first construction foundation pit structural slab (being plated construction 1 in first construction in the present embodiment) above, until the bottom that compartment wall 2 is removed to rear construction foundation pit base plate, as shown in Figure 6.
Preferably, in described step 4, in described step 4, described employing in jumping one mode is removed plate power transmission support 5 punishment partition walls 2 and in time spreading in this plate power transmission support 5 refer to, in with layer in plate power transmission support 5 dispersed choose a part in plate power transmission support 5 corresponding compartment wall parts and remove in advance, and by plate power transmission support 5 timely spreadings in a described part to same layer of structural slab of first construction foundation pit; Then, remove plate power transmission support 5 punishment partition walls in other, remove plate power transmission in other and support 5 corresponding compartment wall 2 parts, and by described in other plate power transmission support 5 timely spreadings to same layer of structural slab of first construction foundation pit, so can realize the support replacement of horizontal direction, guarantee that structure level first, rear construction foundation pit is stressed firm, prevent that first, rear foundation pit structure from occurring that stress is concentrated and causing slight crack to produce.In the present embodiment, plate power transmission support 5 in the six roots of sensation is set between the rear constructing structure plate of same layer and compartment wall 2, in the six roots of sensation, plate power transmission support 5 is sorted successively as 1-6#, employing described above in jumping one mode is removed plate power transmission support 5 punishment partition walls 2 and in time spreading in this plate power transmission support 5 refer to, first remove 1,3,5# should and in time spreading to first construction foundation pit structural slab, then remove 2,4,6# should and in time spreading to first construction foundation pit structural slab, thereby realize the support replacement of horizontal direction.
Step 5, successively formerly returns from the bottom to top and builds late poured band structure 7 between construction foundation pit structural slab and rear construction foundation pit structural slab, and plate power transmission support 5 or successively middle plate power transmission support 5 is built into the inside concrete of corresponding rear construction foundation pit structural slab in successively removing.
Step 6, after waiting described late poured band structure 7 maintenances to complete, removes described vertical support 6, and now structure as shown in Figure 7.
Communication channel construction method between foundation ditch under semi-inverse method provided by the invention, the separation that rear construction foundation pit structure in rear construction foundation pit is removed apart from needs is gone along with sb. to guard him a distance a space, overall ater-casting is from the bottom to top set, the structural slab that place, space, ater-casting need to disconnect rear construction foundation pit structure is set, structural beams is structural column even, for meeting the horizontal power transmission design of foundation pit structure under semi-inverse method, power transmission support is set between rear constructing structure plate and compartment wall 2, at every, because being set, the structural beams of encorbelmenting in space, ater-casting interim vertical support 6 is installed under hereinafter to be referred as cantilevered structure beam.By late poured band structure 7 is set, formerly between construction foundation pit structural slab and rear construction foundation pit structural slab, return from the bottom to top and build late poured band structure 7, not only can reduce between the foundation pit structure of successively construction because different separately sedimentations interacts, thereby better protect whole foundation pit structure engineering, but also can provide enough operating surfaces, for structure, connect thin portion node construction and be more prone to operation, and it is particularly convenient for the dismounting of compartment wall 2, without cutting broken compartment wall 2 at narrow space also without lighter back and forth useless concrete between each layer, thereby can reduce construction cost, accelerating construction progress, economize on resources, there is low-carbon (LC) construction advantage, and then make its with under traditional semi-inverse method, between foundation ditch, compared with communication channel construction method, have easy to operate, operation is simplified, reliability, the feature that implementation is high.
In sum, the present invention is compared with general prior art:
1, adopt many foundation ditches communication channel place to stay the construction method of establishing ater-casting, use the overall merit of its structure power transmission, connection construction technology, remove with many foundation ditches of tradition compartment wall, the structure construction method of filling a vacancy has easy to operate, low in resources consumption, operation simplification, reliability, feature that implementation is high.
2, in this novel construction technology, increase ater-casting and arrange, can reduce the communication channel structure of successively construction there is some difference sedimentation and the impact on architecture quality that produces, better protect construction of underground structure, there is economical synthesis benefit.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within these modifications of the present invention and distortion belong to the scope of the claims in the present invention and equivalent technologies thereof, the present invention be also intended to comprise these change and modification interior.

Claims (10)

1. a communication channel construction method between foundation ditch under semi-inverse method, for the first construction foundation pit structure and the rear construction foundation pit structure that are positioned at compartment wall both sides are communicated with, is characterized in that, comprises the steps:
Step 1: the first construction foundation pit structure of constructing in advance;
Step 2, after rear construction foundation pit soil excavation completes, the base plate power transmission of first constructing support, then construction foundation pit base plate after construction, make to stay and establish space, ater-casting between rear construction foundation pit base plate and described compartment wall;
Step 3: in rear construction foundation pit, successively at every, because arranging under the structural beams of encorbelmenting in space, ater-casting, vertical support is installed from the bottom to top, after vertical support installation, set up structure framed bent and template, when the lower placing of reinforcement of structural slab installs, middle plate power transmission support is set between this structural slab and compartment wall, build this structural slab, make to stay and establish space, ater-casting between this structural slab and described compartment wall, until stay between every layer of structural slab and described compartment wall and establish the space, overall ater-casting connecting from the bottom to top from base plate;
Step 4, after rear construction foundation pit structure construction, compartment wall is from top to bottom successively removed, when removing to middle plate power transmission support place, employing is plate power transmission support punishment partition wall spreading plate power transmission support in this in time in jumping one mode is removed, make plate power transmission support in this continue to put forth effort on corresponding first construction foundation pit structural slab, until compartment wall is removed the bottom to rear construction foundation pit base plate;
Step 5, successively formerly returns from the bottom to top and builds late poured band structure between construction foundation pit structural slab and rear construction foundation pit structural slab, and plate power transmission support in successively removing, or successively middle plate power transmission support is built into the inside concrete of corresponding rear construction foundation pit structural slab;
Step 6, after waiting described late poured band structure maintenance to complete, removes described vertical support.
2. communication channel construction method between foundation ditch under semi-inverse method according to claim 1, is characterized in that, the width in space, described ater-casting is than the large 200-400 millimeter of the width of described compartment wall.
3. communication channel construction method between foundation ditch under semi-inverse method according to claim 1, is characterized in that, stays the pre-embedded steel slab of establishing for vertical support is installed in advance at every because arranging on the substructure plate below the structural beams of encorbelmenting in space, ater-casting.
4. communication channel construction method between foundation ditch under semi-inverse method according to claim 1, it is characterized in that, in described step 4, described employing in jumping one mode is removed plate power transmission support punishment partition wall and in time spreading in this plate power transmission support refer to, in with layer in plate power transmission support dispersed choose a part in plate power transmission support corresponding compartment wall part and remove in advance, and plate power transmission in a described part is supportted to timely spreading to the same layer structural slab of first construction foundation pit; Then, remove in other plate power transmission support punishment partition wall, and by described in other plate power transmission support timely spreading to the same layer structural slab of first construction foundation pit.
5. communication channel construction method between foundation ditch under semi-inverse method according to claim 1, it is characterized in that, in described step 2, when power transmission is supportted corresponding structural slab and is base plate, described power transmission support is as base plate power transmission support, and described base plate power transmission support is a reinforced concrete structure, and described base plate power transmission support is built in the below of rear construction foundation pit base plate and post-casting zone bottom plate, one end of described base plate power transmission support is fixedly connected on the bottom of rear construction foundation pit base plate, and the other end is fixedly connected with compartment wall.
6. communication channel construction method between foundation ditch under semi-inverse method according to claim 1, it is characterized in that, in described step 3, the quantity of described middle plate power transmission support is multiple, described middle plate power transmission support along continuous straight runs is arranged at intervals between every layer of structural slab and compartment wall of rear construction foundation pit, and one end of described middle plate power transmission support anchors into certain length in rear constructing structure plate, the other end is fixedly connected with reinforcing bar in compartment wall.
7. communication channel construction method between foundation ditch under semi-inverse method according to claim 6, is characterized in that, being arranged in the level interval of the adjacent described plate power transmission support of layer is 1500-2500 millimeter, and the diameter range of described middle plate power transmission support is 30-40 millimeter.
8. under a semi-inverse method, between foundation ditch, be communicated with supplementary structure; for carrying out structural defence at first construction foundation pit structure and the rear construction foundation pit structure handshaking procedures of compartment wall both sides; it is characterized in that; comprise power transmission support and vertical support; between each layer of structural slab of rear construction foundation pit and the compartment wall that needs to remove, stay and establish space, ater-casting; described power transmission support is arranged at respectively between the each layer of structural slab that compartment wall is corresponding with rear construction foundation pit, and described vertical support is arranged at respectively every because arranging below the structural beams of encorbelmenting in space, described ater-casting.
9. under semi-inverse method according to claim 8, between foundation ditch, be communicated with supplementary structure, it is characterized in that, the width in space, described ater-casting is than the large 200-400 millimeter of the width of described compartment wall.
10. under semi-inverse method according to claim 8, between foundation ditch, be communicated with supplementary structure, it is characterized in that, when power transmission is supportted corresponding structural slab and is base plate, described power transmission support is supportted as base plate power transmission, described base plate power transmission support is a reinforced concrete structure, described base plate power transmission support is built in the below of rear construction foundation pit base plate and post-casting zone bottom plate, and one end of described base plate power transmission support is fixedly connected on the bottom of rear construction foundation pit base plate, and the other end is fixedly connected with compartment wall; When power transmission support corresponding be the structural slab except base plate time, plate power transmission support in described power transmission support conduct, the quantity of described middle plate power transmission support is multiple, described middle plate power transmission support along continuous straight runs is arranged at intervals between every layer of structural slab and compartment wall of rear construction foundation pit, one end of described middle plate power transmission support anchors into certain length in rear constructing structure plate, and the other end is fixedly connected with reinforcing bar in compartment wall.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103981898A (en) * 2014-05-12 2014-08-13 铁道第三勘察设计院集团有限公司 Integral open-excavation node top-down underground engineering construction method
CN104264685A (en) * 2014-09-28 2015-01-07 上海建工七建集团有限公司 Construction method for mid-partition wall area structure closure
CN104452825A (en) * 2014-10-13 2015-03-25 华东交通大学 Post-cast strip replacing supporting structure used for disassembling building envelope support
CN105386447A (en) * 2015-09-06 2016-03-09 上海建工七建集团有限公司 Construction method for replacement support of post-cast strip in construction site
CN105951846A (en) * 2016-06-21 2016-09-21 中铁第四勘察设计院集团有限公司 Baseplate force transferring structure of middle partition enclosure structure for deep foundation fit and construction method thereof
CN106013253A (en) * 2016-05-19 2016-10-12 中铁第四勘察设计院集团有限公司 Connection node structure of metro transfer station and connection node construction method
CN106499199A (en) * 2016-12-14 2017-03-15 上海建工二建集团有限公司 Close on the interim support replacement of subway ultra-deep foundation pit mid-board and its construction method
CN106638936A (en) * 2016-11-21 2017-05-10 上海建工二建集团有限公司 Basement communication method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09111785A (en) * 1995-10-19 1997-04-28 Takanari Munekiyo Method and equipment for consecutive construction in tunnel-shaped concrete structure
CN102704494A (en) * 2012-06-20 2012-10-03 上海建工二建集团有限公司 Sequence excavation top ring beam sharing device of adjacent foundation pits
CN203066083U (en) * 2013-03-06 2013-07-17 熊楚炎 Supporting structure for two adjacent foundation pits
CN203741845U (en) * 2013-12-30 2014-07-30 上海建工二建集团有限公司 Structure for assisting in communicating fountain pits in semi-reversed construction method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09111785A (en) * 1995-10-19 1997-04-28 Takanari Munekiyo Method and equipment for consecutive construction in tunnel-shaped concrete structure
CN102704494A (en) * 2012-06-20 2012-10-03 上海建工二建集团有限公司 Sequence excavation top ring beam sharing device of adjacent foundation pits
CN203066083U (en) * 2013-03-06 2013-07-17 熊楚炎 Supporting structure for two adjacent foundation pits
CN203741845U (en) * 2013-12-30 2014-07-30 上海建工二建集团有限公司 Structure for assisting in communicating fountain pits in semi-reversed construction method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
郁凤兵: "滨江地区相邻超深、超大基坑同步施工技术研究", 《地基基础》, no. 5, 31 May 2013 (2013-05-31) *
陈康: "相邻基坑连接通道施工技术的研究", 《建筑施工》, no. 4, 30 April 2012 (2012-04-30) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103981898A (en) * 2014-05-12 2014-08-13 铁道第三勘察设计院集团有限公司 Integral open-excavation node top-down underground engineering construction method
CN103981898B (en) * 2014-05-12 2016-03-16 铁道第三勘察设计院集团有限公司 A kind of inverse underground engineering construction method done of overall open cut node
CN104264685A (en) * 2014-09-28 2015-01-07 上海建工七建集团有限公司 Construction method for mid-partition wall area structure closure
CN104264685B (en) * 2014-09-28 2016-08-24 上海建工七建集团有限公司 The construction method that a kind of mid-board regional structure is closed up
CN104452825A (en) * 2014-10-13 2015-03-25 华东交通大学 Post-cast strip replacing supporting structure used for disassembling building envelope support
CN105386447A (en) * 2015-09-06 2016-03-09 上海建工七建集团有限公司 Construction method for replacement support of post-cast strip in construction site
CN106013253A (en) * 2016-05-19 2016-10-12 中铁第四勘察设计院集团有限公司 Connection node structure of metro transfer station and connection node construction method
CN106013253B (en) * 2016-05-19 2018-11-16 中铁第四勘察设计院集团有限公司 Subway transfer station connecting joint structure and connecting node construction method
CN105951846A (en) * 2016-06-21 2016-09-21 中铁第四勘察设计院集团有限公司 Baseplate force transferring structure of middle partition enclosure structure for deep foundation fit and construction method thereof
CN106638936A (en) * 2016-11-21 2017-05-10 上海建工二建集团有限公司 Basement communication method
CN106499199A (en) * 2016-12-14 2017-03-15 上海建工二建集团有限公司 Close on the interim support replacement of subway ultra-deep foundation pit mid-board and its construction method

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