CN103741716B - Under semi-inverse method between foundation ditch communication channel construction method and be communicated with supplementary structure - Google Patents
Under semi-inverse method between foundation ditch communication channel construction method and be communicated with supplementary structure Download PDFInfo
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- CN103741716B CN103741716B CN201310745537.6A CN201310745537A CN103741716B CN 103741716 B CN103741716 B CN 103741716B CN 201310745537 A CN201310745537 A CN 201310745537A CN 103741716 B CN103741716 B CN 103741716B
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Abstract
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 distance needs in rear construction foundation pit are removed is gone along with sb. to guard him a distance and is arranged a space, overall ater-casting from the bottom to top, for meeting the horizontal power transmission design of foundation pit structure under semi-inverse method, arranging power transmission between rear constructing structure plate and compartment wall to support, below the structural beams that every root is encorbelmented because arranging space, ater-casting, interim vertical support being installed.By arranging late poured band structure, interact because of sedimentations different separately between the foundation pit structure that not only can reduce successively construction, but also enough operating surfaces can be provided, operation is more prone to for the construction of anatomical connectivity detail treatment, and particularly convenient for the dismounting of compartment wall, without the need to cutting broken compartment wall at narrow space also without the need to lightering useless concrete between each layer back and forth, thus can construction cost be reduced, accelerating construction progress, economizes on resources, and has low-carbon (LC) construction advantage.
Description
Technical field
The realm of building construction of the present invention, to particularly relate 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 engineering, coordinates different using function demand, and many foundation ditches are communicated with design and bring larger difficulty to underground engineering construction.
At present, Adjacent Pit Underground Construction needs the constructure scheme reaching fabric connectivity to be all that two foundation ditches have been constructed underground structure separately, compartment wall is between the two because of contrary sequence method technical support needs, synchronously cannot remove when two foundation pit structure constructions, therefore compartment wall must be retained between two foundation pit structures, rearmost is dismountable.
Construction method like this adds difficulty of construction undoubtedly, be mainly manifested in: 1. Adjacent Pit anatomical connectivity exists a lot of thin portions connected node, after two foundation pit structures are all constructed, the compartment wall be sandwiched between the two needs to dig out between structure, fill up syndeton again, difficulty of construction is quite large.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 are in the state of encorbelmenting, and have removed compartment wall place and have been equivalent to structural openings; when hole is larger; Rimless beam is protected, and can produce stress and concentrate, extremely easily destroy completed underground structure; cause the generation in crack, communication channel construction quality is impacted.3. after compartment wall is removed, anatomical connectivity between two foundation pit structures runs into situation: reinforcing bar, template are all complete to fill a vacancy in very closed space, casting and compacting of concrete is difficult to once complete, the technique such as slip casting, grouting must be assisted to complete anatomical connectivity, construction sequence is loaded down with trivial details, and quality cannot ensure simultaneously.
Therefore, how a kind of construction quality that greatly can reduce foundation ditch communication channel place anatomical connectivity difficulty of construction, 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
To 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 anatomical connectivity difficulty of construction, 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:
Under a kind of semi-inverse method, communication channel construction method between foundation ditch, for the first construction foundation pit structure being positioned at compartment wall both sides being communicated with rear construction foundation pit structure, comprises the steps:
Step one: the first construction foundation pit structure of construction in advance;
Step 2, after rear construction foundation pit soil excavation completes, base plate power transmission support of first constructing, then construction foundation pit base plate after construction, make to stay between rear construction foundation pit base plate and described compartment wall to establish space, ater-casting;
Step 3: in rear construction foundation pit, under the structural beams of successively encorbelmenting because arranging space, ater-casting at every root from the bottom to top, vertical support is installed, after vertical support installation, set up structure framed bent and template, when the lower placing of reinforcement of structural slab installs, plate power transmission support in arranging between this structural slab and compartment wall, build this structural slab, make to stay between this structural slab and described compartment wall to establish space, ater-casting, establish space, overall ater-casting through from the bottom to top until stay between every Rotating fields plate and described compartment wall from base plate;
Step 4, after rear construction foundation pit structure construction, compartment wall is from top to bottom successively removed, when dismounting is to middle plate power transmission support place, adopt every plate power transmission support punishment partition wall during a mode of jumping is removed and in time spreading plate power transmission support in this, plate power transmission support in this is made to continue to put forth effort on corresponding first construction foundation pit structural slab, until the bottom to rear construction foundation pit base plate removed by compartment wall;
Step 5, successively returns from the bottom to top and builds late poured band structure between first construction foundation pit structural slab and rear construction foundation pit structural slab, and plate power transmission support in successively removing, or successively the inside concrete into corresponding rear construction foundation pit structural slab is built in middle plate power transmission support;
Step 6, after waiting described late poured band structure maintenance to complete, removes described vertical support.
Preferably, the width in space, described ater-casting 200-400 millimeter larger than the width of described compartment wall.
Preferably, the substructure plate below the structural beams of encorbelmenting because arranging space, ater-casting at every root in advance stays the pre-embedded steel slab established for installing vertical support.
Preferably, in described step 4, described employing every plate power transmission support punishment partition wall during a mode of jumping is removed and in time spreading in this plate power transmission support refer to, in same layer, in plate power transmission support, the dispersed compartment wall part chosen in a part corresponding to plate power transmission support is removed in advance, and plate power transmission in a described part is supportted timely spreading on the same Rotating fields plate of first construction foundation pit; Then, to remove in other plate power transmission support punishment partition wall, and by described in other plate power transmission support timely spreading on the same Rotating fields plate of first construction foundation pit.
Preferably, in described step 2, when the structural slab that power transmission support is corresponding is base plate, described power transmission support is supportted as base plate power transmission, described base plate power transmission support is one piece of reinforced concrete structure, the below of building in rear construction foundation pit base plate and post-casting zone bottom plate is supportted in described base plate power transmission, 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 is arranged at intervals between every Rotating fields plate of rear construction foundation pit and compartment wall in the horizontal direction, 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, the level interval being arranged in the adjacent described plate power transmission support of same 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 in the first construction foundation pit structure in compartment wall both sides and rear construction foundation pit fabric connectivity process; comprise power transmission support and vertical support; stay between the compartment wall that each Rotating fields plate and the needs of rear construction foundation pit are removed and establish space, ater-casting; described power transmission support is arranged between compartment wall each Rotating fields plate corresponding with rear construction foundation pit respectively, and described vertical support is arranged at below the structural beams that every root encorbelments because arranging space, described ater-casting respectively.
Preferably, the width in space, described ater-casting 200-400 millimeter larger than the width of described compartment wall.
Preferably, when the structural slab that power transmission support is corresponding is base plate, described power transmission support is supportted as base plate power transmission, described base plate power transmission support is one piece of reinforced concrete structure, the below of building in rear construction foundation pit base plate and post-casting zone bottom plate is supportted in described base plate power transmission, 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 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 is arranged at intervals between every Rotating fields plate of rear construction foundation pit and compartment wall in the horizontal direction, 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 distance needs in rear construction foundation pit are removed is gone along with sb. to guard him a distance and is arranged a space, overall ater-casting from the bottom to top, namely the structural slab that space, ater-casting place needs 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, arrange power transmission between rear constructing structure plate and compartment wall to support, the structural beams of encorbelmenting because arranging space, ater-casting at every root hereinafter referred to as cantilevered structure beam under interim vertical support is installed.By arranging late poured band structure, namely return from the bottom to top between first construction foundation pit structural slab and rear construction foundation pit structural slab and build late poured band structure, interact because of sedimentations different separately between the foundation pit structure that not only can reduce successively construction, thus better protect whole foundation pit structure engineering, but also enough operating surfaces can be provided, operation is more prone to for the construction of anatomical connectivity detail treatment, and it is particularly convenient for the dismounting of compartment wall, without the need to cutting broken compartment wall at narrow space also without the need to lightering useless concrete back and forth between each layer, thus can construction cost be reduced, accelerating construction progress, economize on resources, there is low-carbon (LC) construction advantage, and then make its with have compared with communication channel construction method between foundation ditch under traditional semi-inverse method easy to operate, operation simplifies, reliability, the feature that implementation is high.
In sum, the present invention is compared with general prior art:
1, many foundation ditches communication channel place is adopted to stay the construction method of establishing ater-casting, use the overall merit of its structure power transmission, connection construction technology, remove with tradition many foundation ditches compartment wall, structure construction method of filling a vacancy has easy to operate, low in resources consumption, that operation simplifies, reliability, implementation are high feature.
2, in this novel construction technology, increase ater-casting and arrange, the communication channel structure of successively construction can be reduced 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 connection supplementary structure are provided by following embodiment and accompanying drawing.
Fig. 1 is plane (overlooking) structural representation being 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 be in the embodiment of the present invention 1 base plate power transmission support schematic diagram is set;
Fig. 4 be in the embodiment of the present invention 1 in plate power transmission support schematic diagram is set;
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, plated construction in 1, first 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, the wall section without the need to removing in compartment wall; 15, connecting reinforcement in first construction foundation pit structure; 16, pre-embedded steel slab; 17, shaped steel is connected; 18, pre-buried force bearing plate; 19, angle bar is shelved; 20, post-casting zone bottom plate; 21-structural beams; 22-structural column.
Detailed description of the invention
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 in the first construction foundation pit structure in compartment wall 2 both sides and rear construction foundation pit fabric connectivity process, comprise power transmission support and vertical support 6, stay between the compartment wall 2 that each Rotating fields plate and the needs of rear construction foundation pit are removed and establish space, ater-casting, described power transmission support is arranged between compartment wall 2 each Rotating fields plate corresponding with rear construction foundation pit respectively, described vertical support 6 is arranged at below the structural beams 21 that every root encorbelments because arranging space, described ater-casting respectively.
Preferably, the width 200-400 millimeter larger than the width of described compartment wall 2 in space, described ater-casting,, that is, the width of late poured band structure 7 (being also simultaneously the lifting space of compartment wall concrete block) 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 ensure that the width of late poured band structure 7 is unlikely to long, affected structure stress, again can so that the dismounting of compartment wall 2 and the construction of other connection detail treatment.
When the structural slab that power transmission support is corresponding 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 one piece of reinforced concrete structure, the below in rear construction foundation pit base plate and post-casting zone bottom plate to be built is built in described base plate power transmission support 10, 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 structural slab except base plate except namely after construct in plated construction 4 time, 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 support 5 is arranged at intervals between every Rotating fields plate of rear construction foundation pit and compartment wall in the horizontal direction, 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 reinforcing bar in 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 be embedded in advance in rear constructing structure plate, thus the connection that middle plate power transmission is supportted between 5 and rear constructing structure plate is more firm.Preferably, one end length anchored in rear constructing structure plate of described middle plate power transmission support 5 is 200-500 millimeter, thus the connection making middle plate power transmission support between 5 and rear constructing structure plate is to a certain extent more firm.Preferably, the other end of described middle plate power transmission support 5 is fixedly connected with the main muscle 12 of the ground wall in compartment wall 2, because wall main muscle 12 in ground is positioned at the inside of compartment wall 2, in the pre-connection, need to support together with the reinforcement welding of the other end of 5 with middle plate power transmission after making the main muscle of ground wall 12 expose.Be arranged in that plate power transmission is supportted is 5 more firm with the connection of compartment wall 2, in the present embodiment, arrange below the other end that described power transmission is supportted and shelve angle bar 19 for what support described power transmission support.Preferably, the diameter range of described middle plate power transmission support 5 is 30-40 millimeters, and with under the horizontal intensity prerequisite of the support of plate power transmission in guaranteeing 5, in reducing as much as possible, the use amount of steel in 5 is supportted in plate power transmission.
Preferably, as shown in Figure 5, the substructure plate below the structural beams 21 of encorbelmenting because arranging space, ater-casting at every root in advance stays the pre-embedded steel slab 16 established for installing vertical support 6, to ensure the stability of the vertical support 6 arranged.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, such as be fixedly connected by welding, the upper end of described connection shaped steel 17 is fixedly connected with described structural beams 21 of encorbelmenting because arranging space, ater-casting.
Supplementary structure is communicated with between foundation ditch under semi-inverse method provided by the invention, rear construction foundation pit structure in rear construction foundation pit arranges a space, overall ater-casting from the bottom to top apart from needing the separation of removing to go along with sb. to guard him a distance, namely arranges structural slab, structural beams 21 even structural column 22 that space, ater-casting place needs to disconnect rear construction foundation pit structure.For meeting the horizontal power transmission design of foundation pit structure under semi-inverse method, between rear constructing structure plate and compartment wall 2, power transmission being set and supportting, the structural beams of encorbelmenting because arranging space, ater-casting at every root hereinafter referred to as cantilevered structure beam under interim vertical support 6 is installed.Supplementary structure is communicated with between foundation ditch under above-mentioned semi-inverse method, the compartment wall 2 concrete block having cut can be made directly to hang rear construction foundation pit, compartment wall 2 can arrange late poured band structure 7 after removing, namely late poured band structure 7 is set between first construction foundation pit structural slab and rear construction foundation pit structural slab, interact because of sedimentations different separately between the foundation pit structure that not only can reduce successively construction, thus better protect whole foundation pit structure engineering, but also enough operating surfaces can be provided, operation is more prone to for the construction of anatomical connectivity detail treatment, and it is particularly convenient for the dismounting of compartment wall 2, without the need to cutting broken compartment wall 2 at narrow space also without the need to lightering useless concrete back and forth between each layer, thus can construction cost be reduced, accelerating construction progress, economize on resources, there is low-carbon (LC) construction advantage, and then make its with have compared with communication channel construction method between foundation ditch under traditional semi-inverse method easy to operate, operation simplifies, reliability, the feature that implementation is high.
Embodiment 2
Refer to Fig. 1 to Fig. 7, to present embodiments provide under a kind of semi-inverse method communication channel construction method between foundation ditch, for the first construction foundation pit structure being positioned at compartment wall 2 both sides is communicated with rear construction foundation pit structure, comprise the steps:
Step one: the first construction foundation pit structure of construction in advance.
Step 2, as shown in Figure 3, after rear construction foundation pit soil excavation completes, base plate power transmission of first constructing is supportted, the reserved joint bar be connected with base plate, then construction foundation pit base plate after construction, make to stay between rear construction foundation pit base plate and described compartment wall 2 to establish space, ater-casting and breach, meanwhile, in base plate can as required under the Cantilever Beams of pre-buried upper strata for installing the pre-embedded steel slab 16 of vertical support 6.
Preferably, in described step 2, when the structural slab that power transmission support is corresponding is base plate, described power transmission support is as base plate power transmission support 10, described base plate power transmission support 10 is one piece of reinforced concrete structure, the below in rear construction foundation pit base plate and post-casting zone bottom plate is built in described base plate power transmission support 10, 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, under the structural beams of successively encorbelmenting because arranging space, ater-casting at every root from the bottom to top, vertical support 6 is installed, after vertical support installation 6 completes, set up structure framed bent and template, when the lower placing of reinforcement of structural slab installs, in arranging between this structural slab and compartment wall 2, plate power transmission supports 5, build this structural slab, make to stay between this structural slab and described compartment wall 2 to establish space, ater-casting, space, overall ater-casting through is from the bottom to top established until stay between every Rotating fields plate and described compartment wall 2 from base plate, as shown in Figure 2.Preferably, the width a 200-400 millimeter larger than the width b of described compartment wall 2 in space, described ater-casting, that is, the width lifting space of compartment wall 2 concrete block (be also) of late poured band structure 7 is that the double-width of compartment wall 2 adds 200-400 millimeter sum simultaneously.The width of the late poured band structure 7 of above-mentioned width range, both can ensure that the width of ater-casting is unlikely to long, affected structure stress, again can so that the dismounting of compartment wall 22 and the construction of other connection detail treatment.
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 support 5 is arranged at intervals between every Rotating fields plate of rear construction foundation pit and compartment wall 2 in the horizontal direction, 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 reinforcing bar in 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 be embedded in advance in rear constructing structure plate, thus the connection that middle plate power transmission is supportted between 5 and rear constructing structure plate is more firm.Preferably, one end length anchored in rear constructing structure plate of described middle plate power transmission support 5 is 200-500 millimeter, thus the connection making middle plate power transmission support between 5 and rear constructing structure plate is to a certain extent more firm.Preferably, the other end of described middle plate power transmission support 5 is fixedly connected with the main muscle 12 of the ground wall in compartment wall 2, because wall main muscle 12 in ground is positioned at the inside of compartment wall 2, in the pre-connection, need to support together with the reinforcement welding of the other end of 5 with middle plate power transmission after making the main muscle of ground wall 12 expose.Be arranged in that plate power transmission is supportted is 5 more firm with the connection of compartment wall 2, in the present embodiment, arrange below the other end that described power transmission is supportted and shelve angle bar 19 for what support described power transmission support.Preferably, the diameter range of described middle plate power transmission support 5 is 30-40 millimeters, and with under the horizontal intensity prerequisite of the support of plate power transmission in guaranteeing 5, in reducing as much as possible, the use amount of steel in 5 is supportted in plate power transmission.
Step 4, after rear construction foundation pit structure construction, compartment wall 2 is from top to bottom successively removed, when 5 places are supportted in dismounting to middle plate power transmission, adopt every plate power transmission support 5 punishment partition walls during a mode of jumping is removed and in time spreading plate power transmission support 5 in this, plate power transmission support 5 in this is made to continue to put forth effort on corresponding first construction foundation pit structural slab (being plated construction 1 in first construction in the present embodiment), until the bottom to rear construction foundation pit base plate removed by compartment wall 2, as shown in Figure 6.
Preferably, in described step 4, in described step 4, described employing every plate power transmission support 5 punishment partition walls 2 during a mode of jumping is removed and in time spreading in this plate power transmission support 5 refer to, in same layer, in plate power transmission support 5, the dispersed compartment wall part of the support of plate power transmission in a part corresponding to 5 of choosing is removed in advance, and by the same Rotating fields plate of the extremely first construction foundation pit of plate power transmission support 5 timely spreadings in a described part; Then, remove plate power transmission support 5 punishment partition wall in other, namely compartment wall 2 part of plate power transmission support corresponding to 5 in other is removed, and by the same Rotating fields plate of described plate power transmission support 5 timely spreadings extremely first construction foundation pit in other, so can realize the support replacement of horizontal direction, guarantee first, the structure level of rear construction foundation pit is firmly stressed, prevent first, rear foundation pit structure occur that stress is concentrated and causes slight crack to produce.In the present embodiment, 5 are supportted with arranging plate power transmission in the six roots of sensation between the rear constructing structure plate of 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 every plate power transmission support 5 punishment partition walls 2 during a mode of jumping is removed 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, thus realize the support replacement of horizontal direction.
Step 5, successively returns from the bottom to top and builds late poured band structure 7 between first construction foundation pit structural slab and rear construction foundation pit structural slab, and plate power transmission the support 5 or successively inside concrete into corresponding rear construction foundation pit structural slab is built in middle plate power transmission support 5 in successively removing.
Step 6, after waiting the maintenance of described late poured band structure 7 to complete, remove described vertical support 6, 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 distance needs in rear construction foundation pit are removed is gone along with sb. to guard him a distance and is arranged a space, overall ater-casting from the bottom to top, namely the structural slab that space, ater-casting place needs 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, arrange power transmission between rear constructing structure plate and compartment wall 2 to support, the structural beams of encorbelmenting because arranging space, ater-casting at every root hereinafter referred to as cantilevered structure beam under interim vertical support 6 is installed.By arranging late poured band structure 7, namely return from the bottom to top between first construction foundation pit structural slab and rear construction foundation pit structural slab and build late poured band structure 7, interact because of sedimentations different separately between the foundation pit structure that not only can reduce successively construction, thus better protect whole foundation pit structure engineering, but also enough operating surfaces can be provided, operation is more prone to for the construction of anatomical connectivity detail treatment, and it is particularly convenient for the dismounting of compartment wall 2, without the need to cutting broken compartment wall 2 at narrow space also without the need to lightering useless concrete back and forth between each layer, thus can construction cost be reduced, accelerating construction progress, economize on resources, there is low-carbon (LC) construction advantage, and then make its with have compared with communication channel construction method between foundation ditch under traditional semi-inverse method easy to operate, operation simplifies, reliability, the feature that implementation is high.
In sum, the present invention is compared with general prior art:
1, many foundation ditches communication channel place is adopted to stay the construction method of establishing ater-casting, use the overall merit of its structure power transmission, connection construction technology, remove with tradition many foundation ditches compartment wall, structure construction method of filling a vacancy has easy to operate, low in resources consumption, that operation simplifies, reliability, implementation are high feature.
2, in this novel construction technology, increase ater-casting and arrange, the communication channel structure of successively construction can be reduced 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 change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and distortion belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a communication channel construction method between foundation ditch under semi-inverse method, for the first construction foundation pit structure being positioned at compartment wall both sides being communicated with rear construction foundation pit structure, is characterized in that, comprise the steps:
Step one: the first construction foundation pit structure of construction in advance;
Step 2, after rear construction foundation pit soil excavation completes, base plate power transmission support of first constructing, then construction foundation pit base plate after construction, make to stay between rear construction foundation pit base plate and described compartment wall to establish space, ater-casting;
Step 3: in rear construction foundation pit, under the structural beams of successively encorbelmenting because arranging space, ater-casting at every root from the bottom to top, vertical support is installed, after vertical support installation, set up structure framed bent and template, when the lower placing of reinforcement of structural slab installs, plate power transmission support in arranging between this structural slab and compartment wall, build this structural slab, make to stay between this structural slab and described compartment wall to establish space, ater-casting, establish space, overall ater-casting through from the bottom to top until stay between every Rotating fields plate and described compartment wall from base plate;
Step 4, after rear construction foundation pit structure construction, compartment wall is from top to bottom successively removed, when dismounting is to middle plate power transmission support place, adopt every plate power transmission support punishment partition wall during a mode of jumping is removed and in time spreading plate power transmission support in this, plate power transmission support in this is made to continue to put forth effort on corresponding first construction foundation pit structural slab, until the bottom to rear construction foundation pit base plate removed by compartment wall;
Step 5, successively returns from the bottom to top and builds late poured band structure between first construction foundation pit structural slab and rear construction foundation pit structural slab, and plate power transmission support in successively removing, or successively the inside concrete into corresponding rear construction foundation pit structural slab is built in middle plate power transmission support;
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, larger than the width of described compartment wall 200 millimeters of the width in space, described ater-casting.
3. communication channel construction method between foundation ditch under semi-inverse method according to claim 1, is characterized in that, the substructure plate below the structural beams of encorbelmenting because arranging space, ater-casting at every root in advance stays the pre-embedded steel slab established for installing vertical support.
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 every plate power transmission support punishment partition wall during a mode of jumping is removed and in time spreading in this plate power transmission support refer to, the compartment wall part chosen corresponding to the support of plate power transmission in a part every a mode of jumping in plate power transmission support in same layer is removed in advance, and plate power transmission in choosing is supportted timely spreading on the same Rotating fields plate of first construction foundation pit; Then, to remove in other plate power transmission support punishment partition wall, and by described in other plate power transmission support timely spreading on the same Rotating fields plate 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 the structural slab that power transmission support is corresponding is base plate, described power transmission support is as base plate power transmission support, and described base plate power transmission support is one piece of reinforced concrete structure, and the below of building in rear construction foundation pit base plate and post-casting zone bottom plate is supportted in described base plate power transmission, 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 is arranged at intervals between every Rotating fields plate of rear construction foundation pit and compartment wall in the horizontal direction, and one end of described middle plate power transmission support anchors into certain length in rear construction foundation pit structural slab, 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, the level interval being arranged in the adjacent described plate power transmission support of same layer is 1500-2500 millimeter, and the diameter range of described middle plate power transmission support is 30-40 millimeter.
8. be communicated with supplementary structure between foundation ditch under a semi-inverse method; for carrying out structural defence in the first construction foundation pit structure in compartment wall both sides and rear construction foundation pit fabric connectivity process; it is characterized in that; comprise power transmission support and vertical support; stay between the compartment wall that each Rotating fields plate and the needs of rear construction foundation pit are removed and establish space, ater-casting; described power transmission support is arranged between compartment wall each Rotating fields plate corresponding with rear construction foundation pit respectively, and described vertical support is arranged at below the structural beams that every root encorbelments because arranging space, described ater-casting respectively.
9. be communicated with supplementary structure between foundation ditch under semi-inverse method according to claim 8, it is characterized in that, larger than the width of described compartment wall 200 millimeters of the width in space, described ater-casting.
10. be communicated with supplementary structure between foundation ditch under semi-inverse method according to claim 8, it is characterized in that, when the structural slab that power transmission support is corresponding is base plate, described power transmission support is supportted as base plate power transmission, described base plate power transmission support is one piece of reinforced concrete structure, the below of building in rear construction foundation pit base plate and post-casting zone bottom plate is supportted in described base plate power transmission, 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 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 is arranged at intervals between every Rotating fields plate of rear construction foundation pit and compartment wall in the horizontal direction, one end of described middle plate power transmission support anchors into certain length in rear construction foundation pit structural slab, and the other end is fixedly connected with reinforcing bar in compartment wall.
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| 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 |
| CN104452825B (en) * | 2014-10-13 | 2016-02-17 | 华东交通大学 | A kind of for ater-casting support changing structure for use during space enclosing structure supporting removal |
| 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 |
| 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 |
| CN106760621A (en) * | 2016-11-21 | 2017-05-31 | 上海建工二建集团有限公司 | One kind is encorbelmented floor temporary support structure and 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 |
| 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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