CN110080288A - A kind of open cutting construction method of assembled vault greatly across no column underground structure - Google Patents
A kind of open cutting construction method of assembled vault greatly across no column underground structure Download PDFInfo
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- CN110080288A CN110080288A CN201910330269.9A CN201910330269A CN110080288A CN 110080288 A CN110080288 A CN 110080288A CN 201910330269 A CN201910330269 A CN 201910330269A CN 110080288 A CN110080288 A CN 110080288A
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- 238000010276 construction Methods 0.000 title claims abstract description 110
- 238000005520 cutting process Methods 0.000 title claims abstract description 21
- 238000011065 in-situ storage Methods 0.000 claims abstract description 72
- 239000004567 concrete Substances 0.000 claims abstract description 56
- 230000005641 tunneling Effects 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 7
- 239000011150 reinforced concrete Substances 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 abstract description 4
- 238000009415 formwork Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 34
- 239000010959 steel Substances 0.000 description 34
- 230000002787 reinforcement Effects 0.000 description 32
- 210000003205 muscle Anatomy 0.000 description 28
- 238000010586 diagram Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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Abstract
The invention belongs to underground engineering construction applications, be related to a kind of open cutting construction method of assembled vault greatly across no column underground structure, 1) after completing building enclosure construction, using cut and cover tunneling, side excavates frame side and sets three inner supports；2) in foundation pit bottom application work concrete cushion and waterproof layer, the construction of the second laminate is then completed, removes nethermost one of inner support；3) construction of the second side wall is completed；Complete the construction of central post, middle stringer；4) construction for completing the first laminate, then removes one intermediate of inner support；5) construction of the first side wall is completed；6) construction for completing vault laminate, then removes uppermost one of inner support.The present invention preferably realizes assembled underground structure, builds good visual effect；Iterative structure is formed by partial precast part and in-situ layer, the temporary facilities such as part field formwork, erecting scaffold can be removed from, saves the duration, and the waterproof performance and holistic resistant behavior of assembled underground structure can be effectively improved.
Description
Technical field
The invention belongs to underground engineering building technology fields, and in particular to a kind of assembled vault is greatly across no column underground structure
Open cutting construction method.
Background technique
Cut and cover tunneling at present has the underground structure of inner support foundation pit using traditional monolithic reinforced concrete structure
Construction technology, design process is complicated, heavy workload；The labour of a large amount of multiplexing kind is needed during site operation, construction is made
Industry environment is poor, and working procedure is complicated, and speed of application is slow, is influenced by various weather, weather big, and construction quality is difficult to ensure.Together
When can also generate much discarded building waste in the construction process, not only waste of resource but also polluted environment.Cast-in-place concrete structure
Construction control is irregular, completes after constructing often because various reasons cause concrete structure appearance or inherence often to occur
Various mass defects, later period reparation difficulty is big, and quality is difficult to ensure.
With advances in technology, the development of equipment manufacture, industrial upgrading transition, more and more work are substituted by machine
Manpower, high-tech replace labour-intensive, automatic control equipment to replace manual control.It is various required for building engineering field
Component (beam, plate, column, wall) will be gradually in factory's mass production, and the scene of then transporting carries out assembled completion.
With the development of assembled technology, also there is the design of part assembled, construction technical schemes successively in underground structure,
It is few and use slope or anchor cable (bar) open type open-cut foundation ditch that some are only applicable to underground water, is not suitable for foundation pit using interior branch
It supports, the area of rich groundwater；Some only locally use fabricated construction, and assembly degree is not high, and assembly efficiency is low；And it is conventional
There is column underground structure, the underground space visual field is not open.
Summary of the invention
In order to overcome the shortcomings of the prior art described above, the object of the present invention is to provide a kind of assembled vaults greatly across nothing
The open cutting construction method of column underground structure can effectively solve the problem that underground fabricated construction waterproof problem and structural integrity are asked
Topic preferably realizes building vision without column large space effect.
To achieve the above object, the technical scheme is that a kind of open cut of assembled vault greatly across no column underground structure
Construction method includes the following steps:
1) after completing two building enclosure constructions, crown beam of constructing, using cut and cover tunneling, side is excavated between two building enclosures
Frame side sets three inner supports, excavates and arrives foundation pit bottom；
2) it first constructs concrete cushion, then the construction waterproof layer on concrete cushion at foundation pit bottom, then completes the second laminate
Construction, then removes nethermost one of inner support；
3) construction of the second side wall is completed；Complete the construction of central post, middle stringer；
4) construction for completing the first laminate, then removes one intermediate of inner support；
5) construction of the first side wall is completed；
6) two arc arch bar prefabricated components are lifted, two arc arch bar prefabricated components are spliced, two arc arch bar prefabricated components are opposite
From one end fixed respectively with two the first side walls, using arc arch bar prefabricated component be bed die, on the first side wall, arc arch bar
Between prefabricated component and the first side wall, casting concrete on two arc arch bar prefabricated components and between two arc arch bar prefabricated components
Vault laminate in-situ layer is formed, the construction of vault laminate is completed, then removes uppermost one of inner support.
As an implementation, steps are as follows for the Specific construction of the second laminate in step 2: steel is completed on waterproof layer
Tendons skeleton binding, casting concrete form reinforced concrete cast-in-situ layer.
As another embodiment, steps are as follows for the Specific construction of the second laminate in step 2: two second layers of lifting
Plate side prefabricated component, and prefabricated component in the second laminate is lifted between two the second layer side prefabricated components, it is prefabricated in the second layer side
Casting concrete forms the cast-in-place linkage section of the second laminate between prefabricated component in part and the second laminate.
Further, it is prefabricated in the second layer side when prefabricated component is prefabricated in the second layer side prefabricated component and the second laminate
The wherein side of part processes the first groove, and the two sides of prefabricated component process the second groove in the second laminate；When assembled, the second layer
Two the second grooves of prefabricated component are opposite with the first groove on the second layer side prefabricated component of two sides respectively in plate, recessed first
Casting concrete forms the cast-in-place linkage section of the second laminate between slot and the second groove.
As an implementation, steps are as follows for the Specific construction of the second side wall in step 3): the second side wall of lifting is pre-
Product, bottom and the second laminate of the second side wall prefabricated component are fixed, and top is fixed with building enclosure；It is prefabricated using the second side wall
Part, building enclosure are as side template, between the second side wall prefabricated component and building enclosure and the second side wall prefabricated component and second
Casting concrete forms the second side wall in-situ layer between laminate.
As another embodiment, steps are as follows for the Specific construction of the second side wall in step 3): the second side wall of lifting
Prefabricated component, bottom and the second laminate of the second side wall prefabricated component are fixed, are poured between the second side wall prefabricated component and the second laminate
Concrete forms the cast-in-place linkage section of the second side wall.
As an implementation, steps are as follows for the Specific construction of the first laminate in step 4): the first laminate of lifting is pre-
One end of product, the first laminate prefabricated component is placed on middle stringer, and the other end is placed on the second side wall；In the first laminate prefabricated component
Casting concrete forms the first laminate in-situ layer on upper, middle stringer and on the second side wall.
As another embodiment, steps are as follows for the Specific construction of the first laminate in step 4): the first laminate of lifting
One end of prefabricated component, the first laminate prefabricated component is placed on middle stringer, and the other end is placed on the second side wall；Using middle stringer as bed die,
Casting concrete forms the cast-in-place linkage section of the first laminate between two the first laminate prefabricated components.
As an implementation, steps are as follows for the Specific construction of the first side wall in step 5): the first side wall of lifting is pre-
Product, bottom and the first laminate of the first side wall prefabricated component are fixed, and top is fixed with building enclosure；It is prefabricated using the first side wall
Part, building enclosure are as side template, between the first side wall prefabricated component and building enclosure and the first side wall prefabricated component and first
Casting concrete forms the first side wall in-situ layer between laminate.
As another embodiment, steps are as follows for the Specific construction of the first side wall in step 5): the first side wall of lifting
Prefabricated component, bottom and the first laminate of the first side wall prefabricated component are fixed, are poured between the first side wall prefabricated component and the first laminate
Concrete forms the cast-in-place linkage section of the first side wall.
Compared with prior art, the invention has the following advantages:
(1) open cutting construction method of the assembled vault provided by the invention greatly across no column underground structure be with preferably realizing assembled
Flowering structure, it is applied widely, iterative structure is formed by partial precast part and in-situ layer, part field formwork, frame can be removed from
If temporary facilities such as scaffolds, save the duration, and can effectively improve assembled underground structure waterproof performance and it is whole by
Power performance；
(2) open cutting construction method of the assembled vault provided by the invention greatly across no column underground structure uses vault laminate, realizes
Vault is greatly across no column large space effect, vault finishing building good visual effect；
(3) open cutting construction method of the assembled vault provided by the invention greatly across no column underground structure uses reasonable component piecemeal
Scheme can reduce the size and weight of single prefabricated component, so that the size and weight of prefabricated components can adapt to support
The on-site hoisting of foundation pit, assembled requirement, while being convenient for the transport of prefabricated component, and can preferably realize industrialization promotion application；
(4) connection of the assembled vault provided by the invention side wall prefabricated component greatly across no column underground structure and laminate prefabricated component
The junction of junction and laminate prefabricated component and middle stringer between place, laminate prefabricated component is all made of cast-in-place " wet node ", is filled
Waterproofness, good integrity with formula underground structure；
(5) assembled vault provided by the invention has preform sizes standardization across no column underground structure greatly, reduces design work
It measures, improves production efficiency, promote construction quality, can preferably realize industrialization, save labour, save template and scaffold
Deng, shorten the construction period, energy-saving and environmental protection the advantages that.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Fig. 2 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Fig. 3 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Fig. 4 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Fig. 5 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Fig. 6 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Fig. 7 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Fig. 8 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Fig. 9 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Figure 10 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Figure 11 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Figure 12 is open cut schematic diagram of the assembled vault that provides of the embodiment of the present invention one greatly across no column underground structure；
Figure 13 is the connection schematic diagram of the first side wall prefabricated component provided by Embodiment 2 of the present invention and the first laminate in-situ layer；
Figure 14 is the partial schematic diagram of the first laminate in-situ layer provided by Embodiment 2 of the present invention；
Figure 15 is the partial schematic diagram of the first side wall prefabricated component provided by Embodiment 2 of the present invention；
Figure 16 is the schematic diagram of the connection structure for two the first laminate prefabricated components that the embodiment of the present invention three provides；
Figure 17 is the top view of the connection structure for two the first laminate prefabricated components that the embodiment of the present invention three provides；
Figure 18 is the partial structural diagram for the first laminate prefabricated component that the embodiment of the present invention three provides；
Figure 19 is the partial structural diagram for the first laminate prefabricated component that the embodiment of the present invention three provides；
In figure: 1, building enclosure, 2, crown beam, 3, inner support, 4, concrete cushion, 5, reinforced concrete cast-in-situ layer, 6, central post,
7, middle stringer, the 8, second side wall prefabricated component, the 9, second side wall in-situ layer, the 10, first laminate prefabricated component, the 11, first laminate are cast-in-place
Layer, the 12, first side wall prefabricated component, the 13, first side wall in-situ layer, 14, arc arch bar prefabricated component, 15, vault laminate in-situ layer,
16, backfill, the 20, first U-shaped muscle, the 21, first positioning member, the 22, second U-shaped muscle, the 23, second positioning member, 24, first is horizontal
To reinforcing bar, the 25, second transverse steel, 26, top main reinforcement, 27, additional transverse steel bars, 28, dowel, the 29, first vertical tension rib
Frame, the 30, second vertical drawknot ledges, 31, water sealing structure, 32, top longitudinal reinforcement, 33, lower part longitudinal reinforcement, 34, lower part main reinforcement,
35, additional longitudinal reinforcement；36, the second layer side prefabricated component, prefabricated component in the 37, second laminate, the 38, second cast-in-place connection of laminate
Section, 39, the cast-in-place linkage section of central post, the 40, second cast-in-place linkage section of side wall, the 41, first cast-in-place linkage section of laminate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features；In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or
It is more than two.
Embodiment one
As shown in figs. 1-12, the open cutting construction method that the present embodiment provides a kind of assembled vaults greatly across no column underground structure is fitted
For main structural engineerings such as urban subway station, basement, pipe galleries, with two layers of underground single-column twin spans structure
If being illustrated for three inner supports, which includes the following steps:
1) after completing two constructions of building enclosures 1, construct crown beam 2, using cut and cover tunneling, the side between two building enclosures 1
It excavates frame side and sets three inner supports 3, excavate and arrive foundation pit bottom, as shown in Figure 1；
2) it first constructs concrete cushion 4, then the construction waterproof layer on concrete cushion 4 at foundation pit bottom, then completes the second laminate
Construction；
3) construction of the second side wall is completed；Complete the construction of central post 6, middle stringer 7；
4) construction for completing the first laminate, then removes intermediate one of inner support 3；
5) construction of the first side wall is completed；
6) two arc arch bar prefabricated components 14 are lifted, are fixed splicing between two arc arch bar prefabricated components 14, two archs
One end that plate prefabricated component 14 is away from each other is fixed with two the first side walls respectively, is bed die using arc arch bar prefabricated component 14, the
On one side wall, between arc arch bar prefabricated component 14 and the first side wall, on two arc arch bar prefabricated components 14 and two archs
Casting concrete forms vault laminate in-situ layer 15 between plate prefabricated component 14, completes the construction of vault laminate, then removes most upper
One of inner support in face；Complete the work such as pipeline is moved back, earthing backfills.
Open cutting construction method of the assembled vault provided in this embodiment greatly across no column underground structure preferably realizes dress
It is applied widely with formula underground structure, iterative structure is formed by prefabricated component and in-situ layer, can remove from part field formwork,
The temporary facilities such as erecting scaffold save the duration, and can effectively improve the waterproof performance and entirety of assembled underground structure
Stress performance；Using reasonable component segment partition scheme, it can reduce the size and weight of single prefabricated component, be readily transported, hang
Dress and assembly；By vault laminate, realize vault greatly across no column large space effect, vault finishing building good visual effect.
As shown in figs. 9-11, by being assembled into domeshape again after two arc arch bar prefabricated components 14 are lifted into construction site
Shape can reduce the size and weight of prefabricated component, convenient for the transport, lifting and assembly of prefabricated component.When assembled, two archs
Plate prefabricated component 14 is on same arcwall face.In the construction of the first side wall, can construct at the top that the first side wall is constructed for fixing
The miter of arc arch bar prefabricated component, the inclined degree of miter and the inclined degree of arc arch bar prefabricated component end face match,
In order to the assembly of arc arch bar prefabricated component 14 and the first side wall, assembly efficiency is improved, is accelerated construction progress.In addition, can also be
Arc arch bar prefabricated component 14 and the location structure matched pre-buried on miter improve location efficiency and assembly precision.This reality
Example construction waterproof layer on vault laminate is applied, the waterproof performance of assembled underground structure is further increased.
As an implementation, as shown in Fig. 2, steps are as follows for the Specific construction of the second laminate in step 2: in waterproof
Tie with reinforcing bar is completed on layer, casting concrete forms reinforced concrete cast-in-situ layer 5.As another embodiment, as schemed
Shown in 12, steps are as follows for the Specific construction of the second laminate in step 2: two the second layer side prefabricated components 36 of lifting, and second
Prefabricated component 37 in the second laminate is lifted between layer side prefabricated component 36, the second layer side prefabricated component 36 with it is prefabricated in the second laminate
Casting concrete forms the cast-in-place linkage section 38 of the second laminate between part 37.Second laminate of the present embodiment by multistage prefabricated component into
The assembled connection of row, reduces the size and weight of single prefabricated component, convenient for the transport, lifting and assembly of prefabricated component；And it is adjacent
It is connected between prefabricated component by casting concrete, improves the globality of structure.Further, in 36 He of the second layer side prefabricated component
When prefabricated component 37 is prefabricated in second laminate, the first groove is processed in the wherein side of the second layer side prefabricated component 36, in the second layer
The two sides of prefabricated component 37 process the second groove in plate；When assembled, two the second grooves difference of prefabricated component 37 in the second laminate
It is opposite with the first groove on the second layer side prefabricated component 36 of two sides, the casting concrete between the first groove and the second groove
Form the cast-in-place linkage section 38 of the second laminate.First groove of the present embodiment is oppositely arranged with the second groove, so that the second laminate is existing
Width among linkage section 38 is poured, upper and lower ends are narrow, further increase the globality and waterproof performance of assembled underground structure；This
Outside, on the second layer side prefabricated component 36 can reserved steel bar stretched out from the first groove, can be reserved on prefabricated component 37 in the second laminate
Reinforcing bar is stretched out from the second groove, and the reinforcing bar of two prefabricated components partly overlaps in the cast-in-place linkage section 38 of the second laminate, improves second
The bonding strength of the cast-in-place linkage section 38 of laminate, the connection between two prefabricated components of others of the present embodiment can also use this
The arrangement form of groove and reinforcing bar, such as pouring the first laminate between the first laminate prefabricated component 10 and the first laminate prefabricated component 10
Connection between the first laminate prefabricated component 10 and the first laminate prefabricated component 10 of cast-in-place 10 form of linkage section.In addition, the present embodiment
The second laminate can also use iterative structure, the second laminate include two the second laminate prefabricated components, lift two the second laminates
It is cast-in-place that the second laminate is poured after prefabricated component, between two the second laminate prefabricated components and on two the second laminate prefabricated components
Layer, formed iterative structure, it is identical as the structure of the first laminate in Figure 11, improve assembled underground structure waterproof performance and
Structural integrity.After the cast-in-place intensity of the second laminate reaches design requirement, then remove nethermost one of inner support 3.
As an implementation, as shown in Figure 3-4, steps are as follows for the Specific construction of the second side wall in step 3): enclosing
The position construction waterproof layer of corresponding second side wall, lifts the second side wall prefabricated component 8, the bottom of the second side wall prefabricated component 8 on protection structure 1
Portion is fixed using built-in fitting and the second laminate, and top is fixed with corresponding building enclosure 1, assembled process unstability is prevented, with second
Side wall prefabricated component 8 and building enclosure 1 are side form, and between the second side wall prefabricated component 8 and the second laminate and the second side wall is prefabricated
Casting concrete forms the second side wall in-situ layer 9 between part 8 and building enclosure 1, and completes the second side wall prefabricated component 8 and second
The cast-in-place wet node construction of laminate, the second side wall prefabricated component 8 and the second side wall in-situ layer 9 form iterative structure.As another kind
Embodiment, as shown in figure 12, steps are as follows for the Specific construction of the second side wall in step 3): corresponding the in building enclosure 1
The position construction waterproof layer of two side walls, lifts the second side wall prefabricated component 8, the bottom of the second side wall prefabricated component 8 using built-in fitting with
Second laminate is fixed, and casting concrete forms the cast-in-place linkage section of the second side wall between the second side wall prefabricated component 8 and the second laminate
40.In both the above embodiment, the bottom of the second side wall prefabricated component 8 can be matched by built-in fitting and the built-in fitting on the second laminate
It closes and realizes positioning and fix, top can realize positioning by the built-in fitting cooperation on built-in fitting and building enclosure 1 and fix,
The reinforcing bar reserved on the reinforcing bar and the second laminate of second side wall prefabricated component, 8 bottom carries out overlap joint fixation.Second side of the present embodiment
Wall can also be carried out at the construction field (site) tie with reinforcing bar after-pouring concrete and be formed the second cast-in-place side using complete cast-in-place form
Wall.Using the assembly for when the cast-in-place concrete age of the second side wall, completing the central post 6, middle stringer 7 of two layers of underground and
It is fixed.
As an implementation, as seen in figs. 5-6, steps are as follows for the Specific construction of the first laminate in step 4): hanging
The first laminate prefabricated component 10 is filled, one end of the first laminate prefabricated component 10 is placed on middle stringer 7, and the other end is placed on the second side wall；
On the first laminate prefabricated component 10, on middle stringer 7 and on the second side wall casting concrete formed the first laminate in-situ layer 11 with
And complete the cast-in-place wet node construction of the first laminate prefabricated component 10 and the seam of middle stringer 7, the second side wall, the first laminate prefabricated component
10 and first laminate in-situ layer 11 form iterative structure after undertake whole load on the first laminate.As another embodiment party
Formula, as shown in figure 12, steps are as follows for the Specific construction of the first laminate in step 4): the first laminate prefabricated component 10 of lifting, and first
One end of laminate prefabricated component 10 is placed on middle stringer 7, and the other end is placed on the second side wall；It is bed die with middle stringer 7, at two
Casting concrete forms the cast-in-place linkage section 41 of the first laminate between one laminate prefabricated component 10, and as shown in figure 12, the first laminate is cast-in-place
Cast-in-place connection is used between linkage section 41 and building enclosure 1；It is by the cast-in-place linkage section 41 of the first laminate that two the first laminates are pre-
Product 10 and middle stringer 7 are linked to be entirety, improve the globality of assembled underground structure.In addition, first laminate of the present embodiment is also
Complete cast-in-place form can be directly used to be tied up at the construction field (site) by building bed die between the second side wall and middle stringer 7
Skeleton after-pouring concrete of wire-tiing forms the first cast-in-place laminate.After the cast-in-place intensity of the first laminate reaches design requirement, so
Intermediate one of inner support 3 is removed afterwards.
As an implementation, as shown in Figure 3-4, steps are as follows for the Specific construction of the first side wall in step 5):
The position construction waterproof layer of corresponding first side wall, lifts the first side wall prefabricated component 12, the first side wall prefabricated component 12 in building enclosure 1
Bottom fixed using built-in fitting and the first laminate, top and building enclosure 1 are fixed, prevent assembled process unstability；Utilize first
It is side template that side wall prefabricated component 12, building enclosure, which make 1, between the first side wall prefabricated component 12 and building enclosure 1 and the first side
Casting concrete forms the first side wall in-situ layer 13 between wall prefabricated component 12 and the first laminate, and completes the first side wall prefabricated component
12 and first laminate cast-in-place wet node construction, the first side wall prefabricated component 12 and the first side wall in-situ layer 13 form iterative structure,
Further improve the globality and waterproofness of underground structure.As another embodiment, the first side wall in step 5)
Specific construction steps are as follows: the position construction waterproof layer of corresponding first side wall in building enclosure 1, the first side wall of lifting are prefabricated
The bottom of part 12, the first side wall prefabricated component 12 is fixed using built-in fitting and the first laminate, in the first side wall prefabricated component 12 and first
Casting concrete forms the cast-in-place linkage section of the first side wall between laminate, identical as the structure of the second side wall in Figure 12.Both the above
In embodiment, the bottom of the first side wall prefabricated component 12 can be cooperated by the built-in fitting on built-in fitting and the first laminate realizes positioning
And fix, top can realize positioning by the built-in fitting cooperation on built-in fitting and building enclosure 1 and fix that the first side wall is pre-
The reinforcing bar reserved on the reinforcing bar and the second laminate of 12 bottom of product carries out overlap joint fixation.First side wall of the present embodiment can also be adopted
With complete cast-in-place form, tie with reinforcing bar after-pouring concrete is carried out at the construction field (site) and forms the first cast-in-place side wall.
The central post 6 and middle stringer 7 of the present embodiment can use cast-in-place form, preformed patterns can also be used, when adopting
When with prefabricated component form, using when waiting the cast-in-place concrete age of the second side wall, the assembly and fixation of prefabricated component are completed,
Cast-in-place linkage section is formed by casting concrete between prefabricated component and prefabricated component, two prefabricated components are linked to be entirety, in Figure 12,
The prefabricated component of central post 6 is lifted, the bottom of central post 6 is fixed with the second laminate, then poured between central post 6 and the second laminate
It builds concrete and forms the cast-in-place linkage section 39 of central post, central post 6 and the second laminate are linked to be entirety.
The connection of assembled vault provided by the invention the side wall prefabricated component greatly across no column underground structure and laminate prefabricated component
The junction of place and laminate prefabricated component and middle stringer is all made of cast-in-place " wet node ", the waterproofness of assembled underground structure, whole
Body is good.The vault laminate of the present embodiment can also build vault between two the first side wall prefabricated components 12 using complete cast-in-place
Template, casting concrete forms vault in-situ layer on vault template；Vault laminate can also be hung using complete prefabricated form
Fill vault laminate prefabricated component 14, wherein one end connection of two vault laminate prefabricated components 14, two vault laminate prefabricated components 14
Other end is connected with corresponding first side wall prefabricated component 12, and between two vault laminate prefabricated components 14 and vault laminate is pre-
The cast-in-place linkage section of vault laminate is poured between product 14 and the first side wall prefabricated component 12 respectively.
Open cutting construction method of the assembled vault provided in this embodiment greatly across no column underground structure can be also used for other N
The basement one of the present embodiment and the structure shape of two layers of underground can be respectively adopted in the underground structure of layer, top and the bottom
Formula, the side wall and laminate of remainder layer can also use the structure type of other laminates and side wall of the invention, herein no longer in detail
It states；The underground structure that embodiment is built up using reasonable component segment partition scheme and preparatory construction support replacement plate scheme, not by geology item
The limitation such as part, inner support, solve the problems, such as open-cut foundation ditch with the construction prefabricated component lifting of inner support system and it is assembled difficult and
The problems such as fabricated construction waterproof is poor, globality poor；With the prefabricated components size and construction weight of optimization, adaptation has inner support base
The on-site hoisting in hole and assembled requirement, and can preferably realize industrialization promotion application.Underground structure provided in this embodiment passes through
In-situ layer is poured on the outside of prefabricated component and forms iterative structure, and waterproof performance and the structure for improving assembled underground structure are whole
Property, it is suitable for the main structural engineerings such as urban subway station, basement, pipe gallery.
Embodiment two
As illustrated in figs. 13-15, the present embodiment provides the connection method of a kind of prefabricated component and concrete cast-in-situ layer, can be used for implementing
The first side wall in example one is using iterative structure, the first laminate using the first side wall prefabricated component 12 when complete cast-in-place or iterative structure
With the connection of the cast-in-place laminate of the first laminate in-situ layer 11 or the first, the second side wall can be used for using iterative structure, the second layer
Plate is using the second side wall prefabricated component 8 when complete cast-in-place or iterative structure and the second laminate in-situ layer or reinforced concrete cast-in-situ layer 5
Connection；It is now illustrated by taking the connection method to the first side wall prefabricated component 12 and the first laminate in-situ layer 11 as an example, the first side
The connection method of wall prefabricated component 12 and the first cast-in-place laminate, the second side wall prefabricated component 8 and the second laminate in-situ layer or reinforced concrete
The connection method of native in-situ layer 5 is as it, and this will not be detailed here.
As shown in figure 13, the connection method of the first side wall prefabricated component 12 and the first laminate in-situ layer 11 is as follows:
Firstly, the first U-shaped muscle 20 is reserved in the top of the first laminate in-situ layer 11 in the construction of the first laminate in-situ layer 11, the
One U-shaped 20 both ends of muscle are inserted into the first laminate in-situ layer 11 in a manner of U by falling, and the first U-shaped muscle 20 is reserved, and to stretch out the first laminate cast-in-place
The length of layer 11 is poured with the first laminate in-situ layer 11 interval according to the first side wall prefabricated component 12 and is taken as defined in distance and specification
Length computation is connect to determine；
Secondly, the pre-buried second U-shaped muscle 22 in the first side wall prefabricated component 12, second is U-shaped when the first side wall prefabricated component 12 is prefabricated
The side of muscle 22 is protruded into the first side wall prefabricated component 12 from 12 bottom of the first side wall prefabricated component, and it is prefabricated that the other side is located at the first side wall
It is fixed for the first side wall in-situ layer 13 with later period cast in situs outside part 12；
Then, above-mentioned first side wall prefabricated component 12 is lifted to 11 top of the first laminate in-situ layer, drawing close keeps the first side wall prefabricated
First U-shaped muscle 20 of U-shaped 22 bottom of muscle of the second of part 12 and the first laminate in-situ layer 11 stretches out 11 part of the first laminate in-situ layer
Dislocation is engaged overlap joint, and positions, fixes the relative position between the first side wall prefabricated component 12 and the first laminate in-situ layer 11；First
Positioning member 21 and the position of the first U-shaped muscle 20, the second U-shaped muscle 22 are independent of each other, and both ensure that the first positioning member 21 to
The locating effect of one side wall prefabricated component 12, and the first U-shaped muscle 20 is not influenced and 22 pairs of reinforcement connecting node stress of the second U-shaped muscle are strong
The effect of degree；
Finally, between the first side wall prefabricated component 12 and the first laminate in-situ layer 11 and the first side wall prefabricated component 12 with go along with sb. to guard him knot
First side wall in-situ layer 13 is poured by cast-in-place mode between structure 1, the first side wall prefabricated component 12 has both template function at this time, connection
Areas outside need to only set up a small amount of template, be connected the first side wall prefabricated component 12 and the first laminate in-situ layer 11 by cast-in-place mode
The problem of forming overall structure, avoiding structural member seam crossing leak, and guarantee connecting joint structure intensity.
The connection method of prefabricated component provided in this embodiment and concrete cast-in-situ layer is U-shaped by the first U-shaped muscle 20 and second
It is engaged connection between muscle 22, prefabricated component and concrete cast-in-situ layer are poured into integral structure by cast-in-place mode, not only solved
Prefabricated component connect difficult problem with concrete cast-in-situ layer scene reinforcing bar, and the first U-shaped muscle 20 and the second U-shaped muscle 22 are connected to
First laminate in-situ layer 11, the first side wall prefabricated component 12, the first side wall in-situ layer 13, strengthen prefabricated component and concrete cast-in-situ layer
Connecting node stress intensity, solve the problems, such as the existing easy leak of fabricated construction part seam crossing.
Further, the first side wall prefabricated component 12 and the first laminate in-situ layer 11 are fixed in order to be accurately positioned, it can be
Pre-buried second positioning member 23 in first laminate in-situ layer, 11 upper surface, the corresponding position in the bottom of the first side wall prefabricated component 12 increase
If the first positioning member 21, when lifting above 12 to the first laminate in-situ layer 11 of the first side wall prefabricated component, pass through the first positioning
Component 21 and the second positioning member 23 are attached the phase of the first side wall of stationary positioned prefabricated component 12 and the first laminate in-situ layer 11
To position, location efficiency and precision are improved, solves in existing fabricated construction part that prefabricated component positioning accuracy request is high to ask
Topic.As a kind of implementation, the tune matched with the bottom of the first positioning member 21 can be increased on the second positioning member 23
Leveling device improves positioning accuracy.The positioning and connection of this first positioning member 21 and the second positioning member 23 of the present embodiment
Mode can be also used for the positioning and connection of positioning and connection, central post and laminate between other side wall prefabricated components and laminate
And the positioning and connection of side wall prefabricated component and building enclosure.
Further, the equal arranged for interval in side more first lateral steel of the first U-shaped muscle 20 and 22 lap-joint of the second UXing Jin
Muscle 24, the first transverse steel 24 arrange perpendicular to the first U-shaped muscle 20 and the second U-shaped muscle 22, more first on the first U-shaped muscle 20
Transverse steel 24 and more first transverse steels 24 on the second U-shaped muscle 22 are positioned opposite, pass through setting for the first transverse steel 24
Set, cannot be only used for fixing the first U-shaped muscle 20 and the second U-shaped muscle 22, and can further strengthen the first side wall prefabricated component 12 with
Stress intensity at the connecting node of first laminate in-situ layer 11.In addition, being located at the first side wall prefabricated component on the second U-shaped muscle 22
12 and the first two sides inside side wall in-situ layer 13 on more second transverse steels 25 of arranged for interval, the second transverse steel 25 hang down
It is directly arranged in the second U-shaped muscle 22, the first side wall prefabricated component 12 is further strengthened by the second transverse steel 25 and the first side wall is existing
Pour the stress intensity of the connecting node of layer 13.
The connection method of the above-mentioned prefabricated component and concrete cast-in-situ layer of the present embodiment can be used for prefabricated component with it is prefabricated
The connection of part, such as when the first side wall adds the cast-in-place company of the first laminate using the first laminate prefabricated component using iterative structure, the first laminate
The connection of first side wall prefabricated component and the first laminate prefabricated component when connecing the form of section, when the second side wall uses iterative structure, second
Second side wall prefabricated component and the second laminate when laminate adds the form of the cast-in-place linkage section of the second laminate using the second layer side prefabricated component
The connection etc. of side prefabricated component, difference, which is only that, replaces with the first laminate prefabricated component for concrete cast-in-situ layer, remaining connection method is not
Become, this will not be detailed here.
Embodiment three
The present embodiment provides the connection method of a kind of prefabricated component and prefabricated component, the first laminate that can be used in embodiment one is used
Connection when iterative structure between the first laminate prefabricated component 10 and the first laminate prefabricated component 10, when the second laminate uses iterative structure
Connection between second laminate prefabricated component and the second laminate prefabricated component；Two first layers when now using iterative structure with the first laminate
It is illustrated for the connection method of plate prefabricated component 10, connection method and its phase of the connection method of two the second laminate prefabricated components
Together, this will not be detailed here.
As illustrated in figs. 16-19, the connection method between two the first laminate prefabricated components 10 of one kind, tool are present embodiments provided
Body is as follows:
Firstly, the diameter of each reinforcing bar of steel bar framework, spacing on two the first laminate prefabricated components 10 are determined according to Structure Calculation, with
And the lap of splice of two steel bar frameworks；Steel bar framework includes top main reinforcement 26, lower part main reinforcement 34 and connection top main reinforcement 26
With the dowel 28 of 34 end of lower part main reinforcement；And for equally, being determined according to Structure Calculation and being connected on steel bar framework in prioritization scheme
The diameter of the top longitudinal reinforcement 32, additional longitudinal reinforcement 35 and the additional transverse steel bars 27, lower part longitudinal reinforcement 33 that connect, and
Determine the spacing between the lower part main reinforcement 34 of steel bar framework and additional transverse steel bars 27；
Secondly, completing the prefabricated of two the first laminate prefabricated components 10 in pre-fabricated factory, and in two the first laminate prefabricated components 10
Embedded bar frame, the top main reinforcement 26 and lower part main reinforcement 34 of steel bar framework are arranged in parallel, and lower part main reinforcement 34 partially protrudes into first
Inside laminate prefabricated component 10, the top main reinforcement 26 and dowel 28 of steel bar framework are located at the outside of the first laminate prefabricated component 10, use
In fixed with the first laminate in-situ layer 11 of later period cast in situs；
Then, at the construction field (site) that the end of two the first laminate prefabricated components 10 is positioned opposite, and by two first laminate prefabricated components
10 steel bar framework draws close overlapping overlap joint by being staggered after bar diameter height difference as shown in figure 17；
Finally, being poured between two the first laminate prefabricated components 10 and on two the first laminate prefabricated components 10 by cast-in-place mode
First laminate in-situ layer 11 connects two the first laminate prefabricated components 10 integral.
The connection method of the first laminate of this assembled prefabricated component 10 provided in this embodiment passes through the first laminate prefabricated component
The steel bar framework structure of 10 seam crossings designs, and cast-in-place at whole after the steel bar framework overlapping overlap joint of two the first laminate prefabricated components 10
Body structure not only realizes the rigid connection between two the first laminate prefabricated components 10, ensure that the bearing capacity of the connection structure
And durability, and solve the problems, such as the connecting sewing easy to leak water of existing the first laminate of assembled prefabricated component 10.
Optimization, it is pre-buried in the bottom internal layer of the first laminate prefabricated component 10 in prefabricated two the first laminate prefabricated components 10
Additional transverse steel bars 27, and lower part longitudinal reinforcement 33 is set in additional transverse steel bars 27, while in the top main reinforcement of steel bar framework
Top longitudinal reinforcement 32 is connected on 26, and the wavy first vertical drawing is connected between additional transverse steel bars 27 and top main reinforcement 26
Ledges 29 is tied, and the wave crest of the first vertical drawknot ledges 29 and trough are connected to top longitudinal reinforcement 32 and lower part longitudinal reinforcement
On 33, reinforce the bonding strength between the first laminate prefabricated component 10 and later period cast-in-place the first laminate in-situ layer 11, improves the
One laminate prefabricated component 10 and the first laminate in-situ layer 11 connect it is integral after bearing capacity.
Further, as shown in figure 17, increase water sealing structure 31 in the bottom junctions of two the first laminate prefabricated components 10,
As a kind of implementation, which can be sealing rod.
Further, when the first laminate prefabricated component 10 is prefabricated, side that the first laminate prefabricated component 10 is used to connect
Angled end-face is processed into end face, one of them first laminate prefabricated component 10 wherein side dowel 28 be in tilted layout, and its connect
The gradient of muscle 28 is matched with the gradient of the angled end-face of another the first laminate prefabricated component 10, in this way the first laminate prefabricated component
It is pre- that 10 steel bar framework may extend to another first laminate when overlapping and overlapping with the steel bar framework of the first laminate prefabricated component 10
Above the angled end-face of product 10, and the dowel 28 of another the first laminate prefabricated component 10 does not stretch out outside the dowel 28；And
And first laminate prefabricated component 10 dowel 28 and top main reinforcement 26 between arrange the second vertical drawknot ledges 30, the second vertical tension rib
Frame 30 is the first vertical 29 extending direction of drawknot ledges setting of postponing, and strengthens the first laminate prefabricated component 10 and the first laminate prefabricated component
The intensity of 10 overlapping lap-joints, vertical drawknot ledges can also play the role of framework of steel reinforcement outside fixed prefabricated components simultaneously.
Further, more additional longitudinal reinforcements 35 are arranged in lower part main reinforcement 34, additional longitudinal reinforcement 35 is perpendicular to lower part
Main reinforcement 34 is arranged, and additional longitudinal reinforcement 35 is distributed in the first laminate prefabricated component 10 and the first laminate in-situ layer 11, is led to
Cross additional longitudinal reinforcement 35 arrangement enhance at 11 connecting node of the first laminate prefabricated component 10 and the first laminate in-situ layer by
Power intensity.In addition, as shown in figure 17, the steel bar framework of two the first laminate prefabricated components 10 may be arranged to multiple, and first layer
The steel bar framework of the steel bar framework of plate prefabricated component 10 and the first laminate prefabricated component 10 is alternately arranged, and further enhances the first laminate
Bonding strength between prefabricated component 10 and the first laminate in-situ layer 11, to improve the first laminate of assembled prefabricated component 10
Connection structure integrated carrying ability.
The connection method of the prefabricated component and prefabricated component of the present embodiment can be also used for vertical prefabricated component and vertically prefabricated
Part connecting to improve the globality and waterproof performance of structure on the length direction along underground structure, such as can be used for first
Connection, the second side wall prefabricated component 8 between side wall prefabricated component 12 and the first side wall prefabricated component 12 and between the second side wall prefabricated component 8
Connection etc., connection method and above-mentioned two lateral the first laminate prefabricated components 10 between these vertical prefabricated components
Connection method is identical, two prefabricated components can be used for template the connection of two side wall prefabricated components, the other side can use
Building enclosure or other systems that can be used as template condition carry out overlapping layers concreting；This will not be detailed here.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of open cutting construction method of assembled vault greatly across no column underground structure, which comprises the steps of:
1) after completing two building enclosure constructions, crown beam of constructing, using cut and cover tunneling, side is excavated between two building enclosures
Frame side sets three inner supports, excavates and arrives foundation pit bottom；
2) it first constructs concrete cushion, then the construction waterproof layer on concrete cushion at foundation pit bottom, then completes the second laminate
Construction, then removes nethermost one of inner support；
3) construction of the second side wall is completed；Complete the construction of central post, middle stringer；
4) construction for completing the first laminate, then removes one intermediate of inner support；
5) construction of the first side wall is completed；
6) two arc arch bar prefabricated components are lifted, two arc arch bar prefabricated components are spliced, two arc arch bar prefabricated components are opposite
From one end fixed respectively with two the first side walls, using arc arch bar prefabricated component be bed die, on the first side wall, arc arch bar
Between prefabricated component and the first side wall, casting concrete on two arc arch bar prefabricated components and between two arc arch bar prefabricated components
Vault laminate in-situ layer is formed, the construction of vault laminate is completed, then removes uppermost one of inner support.
2. a kind of open cutting construction method of the assembled vault as described in claim 1 greatly across no column underground structure, feature exist
In steps are as follows for the Specific construction of the second laminate in step 2: completing tie with reinforcing bar, casting concrete shape on waterproof layer
At reinforced concrete cast-in-situ layer.
3. a kind of open cutting construction method of the assembled vault as described in claim 1 greatly across no column underground structure, feature exist
In steps are as follows for the Specific construction of the second laminate in step 2: two the second layer side prefabricated components of lifting, and in two second layers
Prefabricated component in the second laminate is lifted between the prefabricated component of plate side, is being poured between prefabricated component in the second layer side prefabricated component and the second laminate
It builds concrete and forms the cast-in-place linkage section of the second laminate.
4. a kind of open cutting construction method of the assembled vault as claimed in claim 3 greatly across no column underground structure, feature exist
In: when prefabricated component is prefabricated in the second layer side prefabricated component and the second laminate, add in the wherein side of the second layer side prefabricated component
The first groove of work, the two sides of prefabricated component process the second groove in the second laminate；When assembled, the two of prefabricated component in the second laminate
A second groove is opposite with the first groove on the second layer side prefabricated component of two sides respectively, the first groove and the second groove it
Between casting concrete formed the cast-in-place linkage section of the second laminate.
5. a kind of open cutting construction method of the assembled vault as described in claim 1 greatly across no column underground structure, feature exist
In steps are as follows for the Specific construction of the second side wall in step 3): the second side wall prefabricated component of lifting, the bottom of the second side wall prefabricated component
Portion is fixed with the second laminate, and top is fixed with building enclosure；Using the second side wall prefabricated component, building enclosure as side template,
Casting concrete forms the between second side wall prefabricated component and building enclosure and between the second side wall prefabricated component and the second laminate
Two side wall in-situ layers.
6. a kind of open cutting construction method of the assembled vault as described in claim 1 greatly across no column underground structure, feature exist
In steps are as follows for the Specific construction of the second side wall in step 3): the second side wall prefabricated component of lifting, the bottom of the second side wall prefabricated component
Portion is fixed with the second laminate, and casting concrete forms the cast-in-place connection of the second side wall between the second side wall prefabricated component and the second laminate
Section.
7. a kind of open cutting construction method of the assembled vault as described in claim 1 greatly across no column underground structure, feature exist
In steps are as follows for the Specific construction of the first laminate in step 4): the first laminate prefabricated component of lifting, the one of the first laminate prefabricated component
End is placed on middle stringer, and the other end is placed on the second side wall；On the first laminate prefabricated component, on middle stringer and on the second side wall
Casting concrete forms the first laminate in-situ layer.
8. a kind of open cutting construction method of the assembled vault as described in claim 1 greatly across no column underground structure, feature exist
In steps are as follows for the Specific construction of the first laminate in step 4): the first laminate prefabricated component of lifting, the one of the first laminate prefabricated component
End is placed on middle stringer, and the other end is placed on the second side wall；Using middle stringer as bed die, poured between two the first laminate prefabricated components
It builds concrete and forms the cast-in-place linkage section of the first laminate.
9. a kind of open cutting construction method of the assembled vault as described in claim 1 greatly across no column underground structure, feature exist
In steps are as follows for the Specific construction of the first side wall in step 5): the first side wall prefabricated component of lifting, the bottom of the first side wall prefabricated component
Portion is fixed with the first laminate, and top is fixed with building enclosure；Using the first side wall prefabricated component, building enclosure as side template,
Casting concrete forms the between first side wall prefabricated component and building enclosure and between the first side wall prefabricated component and the first laminate
One side wall in-situ layer.
10. a kind of open cutting construction method of the assembled vault as described in claim 1 greatly across no column underground structure, feature exist
In steps are as follows for the Specific construction of the first side wall in step 5): the first side wall prefabricated component of lifting, the bottom of the first side wall prefabricated component
Portion is fixed with the first laminate, and casting concrete forms the cast-in-place connection of the first side wall between the first side wall prefabricated component and the first laminate
Section.
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Application publication date: 20190802 |