CN105113542B - Underground station construction overhanging system and underground station construction method - Google Patents
Underground station construction overhanging system and underground station construction method Download PDFInfo
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- CN105113542B CN105113542B CN201510600528.7A CN201510600528A CN105113542B CN 105113542 B CN105113542 B CN 105113542B CN 201510600528 A CN201510600528 A CN 201510600528A CN 105113542 B CN105113542 B CN 105113542B
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Abstract
The present invention provides a kind of underground station construction overhanging system and underground station construction methods, belong to the realm of building construction, overhanging system includes column and middle plate-girder, middle plate-girder is laterally set, column is vertically provided on bottom plate, the upper end of column is supported in the lower surface of middle plate-girder, fixing piece is provided on middle plate-girder, fixing piece includes the first fixing piece and the second fixing piece, the lower end of first fixing piece is set to the end of middle plate-girder, upper end is fixedly installed lateral stent, and the lower end of the second fixing piece is corresponding with column, and upper end is fixedly connected with stent.Underground station construction overhanging system and construction method provided by the invention use overhanging type structure, after the completion of undermost middle plate-beam construction, pass through column load-bearing, during the middle plate-beam construction of top, it will be on the column of force of gravity to lower section by fixing piece and stent, undermost support for shuttering and template, that is, dismountable, the support for shuttering and template number for applying man-hour requirement in underground station can be largely saved in this way, it is cost-effective.
Description
Technical field
The present invention relates to the realm of building construction, in particular to a kind of underground station construction overhanging system and underground
Station construction method.
Background technology
As China's underground space Construction Technology continues to develop, the scale of subway work will be increasing, the number of plies
It also can be more and more.And in subway plate-girder and stent during top board construction, template will be in construction cost greatly.
Underground station form of construction work of the prior art is bottom plate of first constructing, then sets up plate-girder support for shuttering in lower floor, is poured
After complete middle plate-girder, then middle plate-girder upper bracket is set up, plate-girder in negative one layer of then constructing.Top plate lower carriage is set up again, then pours top
Board concrete, construction is until station main structure construction is completed from the bottom up.This method the problem is that：Due to middle plate
Beam clear stipulaties load is not more than 800kg/m2.After the completion of needing top layer's top board construction, then from it is upper gradually remove support for shuttering engineering.
This clearly results in lowest level steel pipe support, template, lumps of wood etc. need to keep the state that cannot be removed in entire work progress, make material
Material and equipment cannot be fully used, also therefore delay the duration, while can increase significantly steel pipe support, template cost.
Invention content
The present invention provides a kind of underground station construction overhanging system and underground station construction methods, it is intended to improve above-mentioned
Technical problem.
The invention is realized in this way：
Underground multiple level station construction overhanging system, including column and middle plate-girder, the middle plate-girder is laterally set, described vertical
Column is vertically provided on bottom plate, and the upper end of the column is supported in the lower surface of the middle plate-girder；
It is provided with fixing piece on the middle plate-girder, the fixing piece includes the first fixing piece and the second fixing piece, and described the
The lower end of one fixing piece is set to the end of the middle plate-girder, and upper end is fixedly installed stent, and the stent is laterally set, described
The lower end of second fixing piece is correspondingly arranged with the column, and upper end is fixedly connected with the stent.
During construction, after foundation pit is dug in underground station, then bottom plate of first constructing builds support for shuttering and template on bottom plate,
Middle plate-girder is constructed in template, and the lower end of column is fixed on bottom plate, and middle plate-girder is withstood in upper end, after the completion of middle plate-beam construction, in
Plate-girder carries out load-bearing, support for shuttering and template, that is, dismountable recycling by column, for the construction of plate-girder in top.
Setting fixing piece and stent above middle plate-girder, and the position of fixing piece be provided in position corresponding with column and in
At the corner of plate-girder, lower section remove support for shuttering be reset on stent, in this way top construct when support for shuttering weight with
And the weight in the construction of top during plate-girder is passed directly to through stent and fixing piece on the column of lower section, it will not be to completion of having constructed
Situations such as middle plate-girder impacts, and plate-girder is broken in will not more occurring.
It is constructed by the overhanging system in the technical program, construction formwork mode compared with the prior art is required
The support for shuttering and template number wanted largely reduce, and can save great amount of cost.And in lowest level after the completion of plate-beam construction, branch
Mould bases has just been removed, and the construction equipments such as more convenient shield machine enter station and start to construct.
Further, the column is two row, and the two row columns are arranged at intervals, and two arrange the columns along the middle plate
The central axes of beam are symmetrical arranged.
The set-up mode of column has a major impact for entirely overhanging the load-bearing of system, and two row columns are mutually parallel,
It is in symmetrical position that two row columns, which are arranged below middle plate-girder, and the supporting power of two row columns is suitable.
Further, the spacing between the two row columns is equal to 1/3rd of the span of the middle plate-girder.
Two row columns are located at the trisection posistion of middle plate-girder span respectively, the load-bearing of the weight of plate-girder middle in this way on column
Distribution is more uniform.
Further, the fixing piece includes junction steel plate and two blocks of I-steel, and vertically fixation is set two blocks of I-steel
It puts on the middle plate-girder, the junction steel plate is laterally set, and the both ends of the junction steel plate connect two pieces of I-shapeds respectively
The upper end of steel.
First fixing piece and the second fixing piece using same construction, are made using I-steel, and junction steel plate is by work
The upper surface of word steel connects, and is more convenient stent setting.
Further, the stent is made of the polylith steel being laid on the fixing piece.
Stent is provided on fixing piece, and in the technical program, stent is equally made of steel, can be I-steel
Can be the steel of other forms.A plane is being laid into fixing piece, is facilitating setting support for shuttering.
It should be noted that stent can also use the materials such as sleeper, the lumps of wood to be made.
Further, the lower end of the column is provided with pedestal, and the pedestal is evenly arranged with screw hole along its circumferential direction, described
The pedestal is fixed on ground by setting expansion bolt, the expansion bolt in screw hole.
Pedestal can increase the stress surface that column is connect with bottom plate, reduce the pressure to bottom plate, while more convenient dispersion is vertical
The pressure of column.
Further, 16 screw holes are provided on the pedestal.
A kind of underground station construction method, includes the following steps：
A, support for shuttering is set up on undermost bottom plate, installation form erects column；
B, plate-girder in being poured in template, maintenance make middle plate-girder intensity reach 100%；
C, support for shuttering and template are removed, fixing piece and stent are set gradually on middle plate-girder；
D, support for shuttering and installation form are reset on stent, erects column again on middle plate-girder or stent, is repeated
B, step c, until completing all middle plate-beam constructions by the underground station number of plies of design.
In the prior art, the number of plies of underground station gradually increases, and difficulty of construction also gradually increases, and is carried out by this method
Underground station is constructed, plate-girder in successively constructing from bottom to up, after the completion of plate-beam construction in one layer, support for shuttering below
The middle plate-beam construction on upper strata is removed and is used for, avoiding needs in the work progress of prior art multilayer underground station using a large amount of
The situation of support for shuttering and template.
Wherein middle plate-girder intensity reaches 100% and refers to that the concrete strength for pouring middle plate-girder reaches the 100% of design value,
Design strength is exactly fully achieved.
Further, in step d, the column of last layer is identical with next layer of column quantity and position is corresponding.
In work progress, the position of each layer of column is corresponding with next layer of stud, in this way in top
The weight of plate-girder and support for shuttering successively can be transferred to bottom plate by column completely, and can't be to the middle plate-girder for completion of having constructed
It causes to damage.
Further, it after the intensity of all middle plate-girders reaches 100%, is successively removed down since top layer vertical
Column.
The beneficial effects of the invention are as follows：Underground station construction overhanging system and underground station construction party provided by the invention
Method uses overhanging type structure, after the completion of undermost middle plate-beam construction, by column load-bearing, and during the middle plate-beam construction of top,
Bottom plate, undermost support for shuttering and template on the column of force of gravity to lower section and will be transferred to by fixing piece and stent
It removes, can largely save the support for shuttering and template number for applying man-hour requirement in underground station in this way, it is cost-effective.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structure diagram of construction overhanging system in underground station provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of underground station construction overhanging system central post provided in an embodiment of the present invention；
Fig. 3 is the structure diagram of fixing piece in construction overhanging system in underground station provided in an embodiment of the present invention.
Figure acceptance of the bid, which is remembered, is respectively：
Bottom plate 101；Middle plate-girder 102；First fixing piece 103；Second fixing piece 104；Stent 105；Junction steel plate 106；It is vertical
Column 110；Pedestal 111.
Specific embodiment
As China's underground space Construction Technology continues to develop, the scale of subway work will be increasing, the number of plies
It also can be more and more.And in subway plate-girder and stent during top board construction, template will be in construction cost greatly.
Underground station form of construction work of the prior art is bottom plate of first constructing, then sets up plate-girder support for shuttering in lower floor, is poured
After complete middle plate-girder, then middle plate-girder upper bracket is set up, plate-girder in negative one layer of then constructing.Top plate lower carriage is set up again, then pours top
Board concrete, construction is until station main structure construction is completed from the bottom up.This method the problem is that：Due to middle plate
Beam clear stipulaties load is not more than 800kg/m2.After the completion of needing top layer's top board construction, then from it is upper gradually remove support for shuttering engineering.
This clearly results in lowest level steel pipe support, template, lumps of wood etc. need to keep the state that cannot be removed in entire work progress, make material
Material and equipment cannot be fully used, also therefore delay the duration, while can increase significantly steel pipe support, template cost.
Those skilled in the art are seeking a kind of tool or method for improving the problem always for a long time.
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without creative efforts shall fall within the protection scope of the present invention.Therefore,
The detailed description of the embodiment of the present invention to providing in the accompanying drawings is not intended to limit the model of claimed invention below
It encloses, but is merely representative of the selected embodiment of the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
All other embodiments obtained under the premise of creative work are made, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " are based on orientation shown in the drawings or position relationship or are somebody's turn to do
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
It solves to indicate or implying relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or one
Connect to body；Can be mechanical connection or electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Embodiment please refers to
As shown in Figure 1 to Figure 3, a kind of underground station construction overhanging system is present embodiments provided, Fig. 1 shows that this is outstanding
The structure of system is chosen, including column 110 and middle plate-girder 102, laterally setting, the column 110 are vertically arranged for the middle plate-girder 102
And bottom plate 101 is supported in, the upper end of the column 110 is supported in the lower surface of the middle plate-girder 102.
As shown in Fig. 2, column 110 is made of I-steel that strengthening, lower end is provided with pedestal 111, and pedestal 111 is circle
Plate-like, pedestal 111 are evenly arranged with 16 screw holes along its circumferential direction, expansion bolt are set in the screw hole, and the expansion bolt will
The pedestal 111 is fixed on ground.
Pedestal 111 can increase the stress surface that column 110 is connect with bottom plate 101, reduce the pressure to bottom plate 101, simultaneously
The pressure of more convenient dispersion column 110.
Column 110 is two groups, and the set-up mode of column 110 has a major impact for entirely overhanging the load-bearing of system, two row
Column 110 is mutually parallel, and two row columns 110 are arranged on middle 102 lower section of plate-girder in symmetrical position, two row columns 110
Supporting power it is suitable.
Specifically, in the present embodiment, two row columns 110 are located at the trisection posistion of middle 102 span of plate-girder respectively, also
It is 1/3rd of spacing equal to the span of the middle plate-girder 102 said between the two row column 110, plate-girder 102 middle in this way
Load-bearing distribution of the weight on column 110 is more uniform.
Station space is formed between middle plate-girder 102 and bottom plate 101, middle plate-girder 102 is configured by pouring construction,
It is fixed with the vertical beam in station or wall connecting.
Fixing piece is provided on the middle plate-girder 102, the fixing piece includes the first fixing piece 103 and the second fixing piece
104, the lower end of first fixing piece 103 is set to the end of the middle plate-girder 102, specifically, the first fixing piece 103
At the corner of middle plate-girder 102 and station inner wall.
The lower end position of second fixing piece 104 and the position of the column 110 are correspondingly arranged, as shown in Figure 1, two groups
The position of second fixing piece 104 is overlapped with the installation position of lower end column 110 on vertical, is convenient in this way by the middle plate-girder of top
102nd, the weight of support for shuttering etc. is transferred directly on the column 110 of lower section.
First fixing piece 103 and the second fixing piece 104 using same construction, are made using I-steel, it is specific and
Speech, as shown in figure 3, the first fixing piece 103 and the second fixing piece 104 include junction steel plate 106 and two blocks of I-steel, two pieces of institutes
It states I-steel to be vertically fixedly installed, during setting, I-steel is supported in I-shaped on middle plate-girder 102, among two blocks of I-steel
With certain intervals, junction steel plate 106 tiles, and the both ends of junction steel plate 106 are connected on I-steel.
The upper end of fixing piece is fixedly installed stent 105, and the stent 105 laterally setting, the stent 105 is by being laid in
Polylith steel on the fixing piece are formed, and can be the steel that I-steel can also be other forms.Polylith steel are laid into
One plane facilitates setting support for shuttering.
Using above-mentioned overhanging system, the present embodiment also provides a kind of construction method of underground station：
It excavates the working foundation pit in underground station first, and constructs bottom plate 101 in bottom of foundation ditch, thereafter in bottom plate 101
On set up support for shuttering, the then installation form on support for shuttering, and column 110 is erected on bottom plate 101, by chassis by column
110 are firmly fixed and keep column 110 in vertical state.
In the present embodiment, support for shuttering is built by materials such as the lumps of wood and sleepers, when support for shuttering and template have been built
Cheng Hou, plate-girder 102 in being poured in template, after the completion of middle plate-girder pours, is conserved, the intensity of plate-girder 102 in waiting
Reach 100%.
At this point, the support for shuttering of 102 lower section of middle plate-girder and form removable can be kept column 110 in upright state and right
Middle plate-girder 102 forms support, and fixing piece and stent 105 are set gradually on middle plate-girder 102, during setting, should ensure the as possible
The position of two fixing pieces 104 is perfectly aligned with the position of column 110, and during the position of the first fixing piece 103 is then arranged on
At the upper armpit angle of plate-girder 102.
Steel are directly laid on fixing piece and form a plane by stent 105.The branch that lower section can be removed at this time
Mould bases and template are built on stent 105 again, while column 110 is once again set up on stent 105, likewise, newly setting
The column 110 put is corresponding with 110 position of column of lower section.
After support for shuttering, template and column 110 are once again set up, the middle plate-girder 102 of underground layer second from the bottom is poured again.
It constructs in the same way, until all middle plate-girders 102 are constructed completion.After the completion of construction, it is according to design alternative
It is no to remove column 110.
Preferred embodiment is, when removing column 110, successively to remove column 110 down since top layer, be
Ensure safety, wait the intensity of all middle plate-girders 102 that could be removed after reaching 100%.
It constructs according to above-mentioned construction method, no matter underground station needs that how many layer built, only needs a set of support for shuttering
It can complete to construct with template, this greatly reduces the use cost of support for shuttering and template.
Underground station construction overhanging system and underground station construction method provided in this embodiment use overhanging type structure,
After the completion of undermost middle plate-girder 102 is constructed, by 110 load-bearing of column, when the middle plate-girder 102 of top is constructed, pass through fixation
Part and stent 105 on the column 110 of force of gravity to lower section and will be transferred to bottom plate 101, and undermost support for shuttering and template are
It is dismountable, the support for shuttering and template number for applying man-hour requirement in underground station can be largely saved in this way, meanwhile, the plate in lowest level
After the completion of beam 102 is constructed, support for shuttering has just been removed, and the construction equipments such as more convenient shield machine enter station and start to construct.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. underground station construction overhanging system, which is characterized in that including column and middle plate-girder, the middle plate-girder is laterally set,
The column is vertically provided on bottom plate, and the upper end of the column is supported in the lower surface of the middle plate-girder；
Fixing piece is provided on the middle plate-girder, the fixing piece includes the first fixing piece and the second fixing piece, and described first is solid
The lower end for determining part is set to the end of the middle plate-girder, and upper end is fixedly installed stent, and the stent is laterally set, and described second
The lower end of fixing piece is correspondingly arranged with the column, and upper end is fixedly connected with the stent；
First fixing piece and second fixing piece include junction steel plate and two blocks of I-steel, and two blocks of I-steel erect
To being fixed on the middle plate-girder, the junction steel plate is laterally set, and the both ends of the junction steel plate connect two pieces respectively
The upper end of the I-steel.
2. construction overhanging system in underground station according to claim 1, which is characterized in that the column is arranged for two, and two
It arranges the column to be arranged at intervals, and the two row columns are symmetrical arranged along the central axes of the middle plate-girder.
3. construction overhanging system in underground station according to claim 2, which is characterized in that between the two row columns
1/3rd away from the span equal to the middle plate-girder.
4. construction overhanging system in underground station according to claim 1, which is characterized in that the stent is by being laid in
The polylith steel stated on fixing piece are formed.
5. construction overhanging system in underground station according to claim 1, which is characterized in that the lower end setting of the column
There is a pedestal, the pedestal is evenly arranged with screw hole along its circumferential direction, setting expansion bolt in the screw hole, and the expansion bolt is by institute
It states pedestal and is fixed on ground.
6. construction overhanging system in underground station according to claim 5, which is characterized in that be provided with 16 on the pedestal
A screw hole.
7. it carries out underground station with overhanging system using the underground station construction as described in any one in claim 1 to 6 to apply
The method of work, which is characterized in that include the following steps：
A, support for shuttering is set up on undermost bottom plate, installation form erects column；
B, plate-girder in being poured in template, maintenance make middle plate-girder intensity reach 100%；
C, support for shuttering and template are removed, fixing piece and stent are set gradually on middle plate-girder；
D, support for shuttering and installation form are reset on stent, erects column again on middle plate-girder or stent, repeats b, c step
Suddenly, until completing all middle plate-beam constructions by the underground station number of plies of design.
8. the method according to claim 7 for carrying out underground station construction with overhanging system using underground station construction,
It is characterized in that, in step d, the column of last layer is identical with next layer of column quantity and position is corresponding.
9. the method according to claim 8 for carrying out underground station construction with overhanging system using underground station construction,
It is characterized in that, after the intensity of all middle plate-girders reaches 100%, successively removes column down since top layer.
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| CN105525629A (en) * | 2016-01-20 | 2016-04-27 | 中铁上海工程局集团有限公司 | Construction method and device of subway station |
| CN111379438A (en) * | 2020-03-10 | 2020-07-07 | 中国铁路设计集团有限公司 | Vertical temporary supporting system for underground structure and using method |
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| JP3327191B2 (en) * | 1997-11-19 | 2002-09-24 | 鹿島建設株式会社 | Underground structure and its construction method |
| CN101886468B (en) * | 2010-03-29 | 2011-08-24 | 南京大地建设集团有限责任公司 | Construction method of suspension type template support in high-position conjoined structure |
| CN102691411A (en) * | 2012-06-21 | 2012-09-26 | 中国建筑第五工程局有限公司 | Beam plate post-cast strip template support system and construction method thereof |
| CN203625872U (en) * | 2013-12-24 | 2014-06-04 | 葛洲坝集团第五工程有限公司 | Pile foundation construction platform |
| CN204919608U (en) * | 2015-09-21 | 2015-12-30 | 中铁上海工程局有限公司 | Underground station construction is with system of encorbelmenting |
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