CN110130398A - A kind of piping lane system and its construction method that multistage support is combined with main structure - Google Patents
A kind of piping lane system and its construction method that multistage support is combined with main structure Download PDFInfo
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- CN110130398A CN110130398A CN201910403260.6A CN201910403260A CN110130398A CN 110130398 A CN110130398 A CN 110130398A CN 201910403260 A CN201910403260 A CN 201910403260A CN 110130398 A CN110130398 A CN 110130398A
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 238000005266 casting Methods 0.000 claims abstract description 27
- 239000002689 soil Substances 0.000 claims abstract description 11
- 238000011065 in-situ storage Methods 0.000 claims abstract description 7
- 238000013461 design Methods 0.000 claims description 20
- 238000009412 basement excavation Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000009415 formwork Methods 0.000 claims description 8
- 238000007596 consolidation process Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004078 waterproofing Methods 0.000 claims description 5
- 210000003205 muscle Anatomy 0.000 claims description 3
- 230000002459 sustained effect Effects 0.000 claims description 3
- 230000003447 ipsilateral effect Effects 0.000 claims description 2
- 230000007774 longterm Effects 0.000 abstract description 7
- 230000005641 tunneling Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000010410 reperfusion Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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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
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention belongs to ground and basic engineering construction technical fields, disclose a kind of piping lane system and its construction method that multistage support is combined with main structure, in the area using cut and cover tunneling, first squeeze into two row of first stage diaphram walls, the soil layer between two row of first stage diaphram walls is dug out after carrying out first order diaphram wall supporting, excavate into the level-one foundation pit of open type, second level diaphram wall is squeezed into again, excavates second level foundation pit, the cast-in-place bottom plate of the finally cast in situs first order, the cast-in-place bottom plate in the second level and casting top slab, again earthen backfill after the completion of maintenance.The diaphram wall that the present invention uses pattern foundation pit supporting structure is as piping lane side wall, to reduce workload, save material and cost, and multistage support helps to mitigate piping lane long-term settlement, help to improve piping lane anti-seismic performance, it reduces backfill and reduces construction volume, the contradiction between stress and space utilization rate has also been better balanced.
Description
Technical field
The invention belongs to ground and basic engineering construction technical fields, in particular to a kind of novel piping lane body
System and its construction method.
Background technique
With China's rapid economic development, urbanization rate is substantially improved, and existing urban infrastructure is sent out with city
The paces of exhibition are lacked of proper care, and pipe gallery construction in the case becomes most important.The structure design of pipe gallery engineering uses year
Limit should be determining according to the reasonable using period of permanent structure, and not preferably less than 100 years.But in actual use, long-term settlement
Piping lane joint can be made to be easy to happen leakage, infiltration can make piping lane accelerated sedimentation again, influence durability.In addition, piping lane is in earthquake
Also it is easy to happen destruction under effect, since piping lane is embedded in underground, will result in heavy economic losses once occurring to destroy.Therefore right
For piping lane construction, how to balance cost, stress, space utilization rate, durability is particularly important.
Pipe gallery cross-sectional form and property, capacity, geology, topographic features and construction according to receiving pipeline at present
Mode, piping lane system can be divided into round and two kinds of section forms of box.Conventional circular section has respective with conventional rectangular section
Advantage, but be all difficult to balance all aspects, it is mainly manifested in the following aspects:
First, in soft clay area, shallow embedding piping lane generally selects cut and cover tunneling.For conventional circular and rectangular section piping lane
All it is first to be excavated with Vertical Pile supporting, again, inner support is set when excavating, by bracing demolition after piping lane installation, most
Afterwards by earthen backfill.And inner support installation will expend huge human and material resources, but only play a role, using in the construction process
Effect is unobvious in journey.
Second, although the piping lane of circular cross-section is advantageous in terms of stress performance, space utilization rate is low, coverage
Greatly, speed of application is slow.
Third, the piping lane of rectangular section is compared to circular cross section, and space utilization rate is high, coverage is small, speed of application
Fastly；But stress performance is poor, the stress at four angles is concentrated particularly evident.
Summary of the invention
What the present invention puted forth effort to solve is the underutilization of conventional rectangular, circular cross-section piping lane in service stage to vertical supporting
And it is poor with shock resistance to cause long-term settlement larger, and the installation Yu dismounting of inner support will cause into cut and cover tunneling
The technical issues of this waste, provides a kind of piping lane system and its construction method that multistage support is combined with main structure, can
With under the conditions of cut and cover tunneling, the diaphram wall that pattern foundation pit supporting structure is used is as piping lane side wall, to reduce workload, save
About material and cost, and multistage support helps to mitigate piping lane long-term settlement, helps to improve piping lane anti-seismic performance, reduces backfill
Soil and reduction construction volume, have also been better balanced the contradiction between stress and space utilization rate.
In order to solve the above-mentioned technical problem, the present invention is achieved by technical solution below:
A kind of piping lane system that multistage support is combined with main structure is the level-one piping lane and second level of rectangle by section
Piping lane is constituted, and the second level piping lane is located at level-one piping lane lower part and width is narrower than the level-one piping lane；
Side wall of the two row of first stage diaphram walls as the level-one piping lane, two rows of first order diaphram walls it
Between the soil body dig out to form level-one foundation pit；Height is provided between two rows of first order diaphram walls lower than the first order
Two rows of second level diaphram walls of diaphram wall, side wall of two rows of second level diaphram walls as second level piping lane,
The soil body between two rows of second level diaphram walls digs out to form second level foundation pit；
Between the ipsilateral first order diaphram wall and the second level diaphram wall, at level-one foundation pit bottom
Portion's cast in situs has the cast-in-place bottom plate of the first order；The cast-in-place bottom plate of the first order of the left and right sides is in sustained height, and described first
The cast-in-place bottom plate of grade forms the bottom surface of the level-one piping lane；Between two rows of second level diaphram walls, in the second level foundation pit
Bottom cast in situs has the cast-in-place bottom plate in the second level, and the cast-in-place bottom plate in the second level forms the bottom surface of the second level piping lane；
Cast in situs has casting top slab between two rows of first order diaphram walls, and the casting top slab is as described one
The top surface of grade piping lane；
The first order diaphram wall, the second level diaphram wall, the cast-in-place bottom plate of the first order, institute as a result,
State the cast-in-place bottom plate in the second level, the casting top slab collectively forms the piping lane system that multistage support is combined with main structure.
Further, the second level piping lane is located at the middle position of level-one piping lane lower part, i.e., two rows of second level
The symmetrical center line of diaphram wall is overlapped with the symmetrical center line of two rows of first order diaphram walls.
Further, the second level piping lane is for placing water supply, drainage pipeline, the both sides clear distance and pipe of placed pipeline
Track pitch is no less than 400mm from the ground.
Further, the waterproofing grade of the cast-in-place bottom plate in the second level is higher than the waterproof etc. of the cast-in-place bottom plate of the first order
Grade.
Further, the cast-in-place bottom plate of the first order and the first order diaphram wall, the second level underground are continuous
The link position of wall does consolidation process, and the link position of the cast-in-place bottom plate in the second level and the second level diaphram wall adds
Gu processing.
Further, the link position of the casting top slab and the first order diaphram wall does consolidation process.
The construction method for the piping lane system that above-mentioned multistage support is combined with main structure, this method according to the following steps into
Row:
(1) position, buried depth and the size that the first order diaphram wall is determined according to design, after carrying out setting-out,
It constructs two row of first stage diaphram walls；
(2) level-one excavation of foundation pit is carried out between two rows of first order diaphram walls；
(3) position, buried depth and the size that the second level diaphram wall is determined according to design, after carrying out setting-out,
Two rows of constructing second level diaphram wall；
(4) second level excavation of foundation pit is carried out between two rows of second level diaphram walls；
(5) bar planting is carried out to the second level diaphram wall, after the completion of bar planting successively to the cast-in-place bottom plate in the second level
It carries out formwork supporting plate, reinforcing bar binding, pour；It is existing to the first order after the cast-in-place base plate strength in the second level reaches design requirement
Bottom plate is poured successively to carry out formwork supporting plate, reinforcing bar binding, pour；
(6) after the cast-in-place base plate strength of the first order reaches design requirement, the first order diaphram wall is planted
Muscle successively carries out formwork supporting plate to the casting top slab, reinforcing bar binding, pours after the completion of bar planting；
(7) backfill construction is carried out more than the casting top slab.
Wherein, the cast-in-place bottom plate in the second level of step (5) and the cast-in-place construction of bottom plates front and back of the first order are according to design
It is required that carrying out the construction of waterproof measure.
The beneficial effects of the present invention are:
(1) present invention can be achieved to reduce long-term settlement: due to using multistage support, and diaphram wall height is greater than pipe
Corridor bottom plate buried depth, in the long-term use, multistage support increases side friction, therefore can reduce the long-term heavy of piping lane
Drop, enhances the impermeability of piping lane, improves the durability of piping lane.
(2) present invention can be achieved to improve piping lane anti-seismic performance: compared with common stake, the anti-seismic performance of diaphram wall
It improves a lot, bottom plate and top plate enhance the globality of piping lane all by the way of cast-in-place；When earthquake, bottom plate, top plate and ground
Mass motion will occur for lower diaphragm wall, reduce the opposite changing of the relative positions of piping lane, to alleviate the destruction of earthquake.
(3) since foundation pit uses diaphram wall supporting, inner support, and ground the achievable save the cost of the present invention: are eliminated
Side wall of the lower diaphragm wall as piping lane, has saved a large amount of material, human cost compared with conventional piping lane；Second level piping lane can simultaneously
To place water supply, the drainage pipeline etc. that are easy leak, function zoning is more reasonable.
Detailed description of the invention
Fig. 1 is the front view for the piping lane system that multistage support provided by the present invention is combined with main structure；
Fig. 2 is the top view for the piping lane system that multistage support provided by the present invention is combined with main structure.
In above-mentioned figure: 1- first order diaphram wall, the second level 2- diaphram wall, the cast-in-place bottom plate of the 3- first order, 4-
The cast-in-place bottom plate of second level, 5- casting top slab.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail, and following embodiment can make this profession
The present invention, but do not limit the invention in any way is more completely understood in technical staff.
As depicted in figs. 1 and 2, present embodiments provide a kind of piping lane system that multistage support is combined with main structure and
Its construction method first squeezes into two row of first stage diaphram walls 1, carries out first order underground in the area using cut and cover tunneling
The soil layer between two row of first stage diaphram walls 1 can be dug out with excavator, be excavated at the one of open type after 1 supporting of diaphragm wall
Grade foundation pit, then squeeze into second level diaphram wall 2, excavate second level foundation pit, the last cast-in-place bottom plate 3, second of the cast in situs first order
The cast-in-place bottom plate 4 of grade and casting top slab 5, again earthen backfill after the completion of maintenance.First order diaphram wall 1, second level underground are continuous
The cast-in-place bottom plate 3 of wall 2, the first order, the cast-in-place bottom plate 4 in the second level collectively form multistage support and main structure with casting top slab 5 and mutually tie
The piping lane system of conjunction.
The piping lane system that a kind of multistage support of the invention is combined with main structure is the level-one pipe of rectangle by section
Corridor and second level piping lane are constituted, and second level piping lane is located at level-one piping lane lower part middle position, and the width of second level piping lane is narrower than level-one
Piping lane.
Specifically, which includes the two row of first stage diaphram walls 1 as level-one piping lane side wall, and two ranked first
The distance between grade diaphram wall 1 determines that the overall width of level-one piping lane, the height of two row of first stage diaphram walls 1 depend on
In design requirement.Soil layer between two row of first stage diaphram walls 1 is dug out, and excavates the level-one foundation pit at open type.
Two rows of second level diaphram walls 2 are provided between two row of first stage diaphram walls 1, two rows of second level undergrounds connect
The symmetrical center line of continuous wall 2 is overlapped with the symmetrical center line of two row of first stage diaphram walls 1.Two rows of second level diaphram walls
2 side wall as second level piping lane, the soil layer between two rows of second level diaphram wall 2 are dug out, and excavate the second level base at open type
Hole.The distance between two rows of second level diaphram walls 2 determine the overall width of second level piping lane, the overall width one of second level piping lane
As depend on wherein place water supply, drainage pipeline diameter, the both sides clear distance and pipeline of placed pipeline apart from ground not
It should be less than 400mm.The height of two rows of second level diaphram walls 2 depends on design requirement, and typically not greater than first order underground connects
Continuous wall 1.
First order diaphram wall 1, second level diaphram wall 2 can use row of piles formula, intensity, rigidity, thickness
And the setting of subsiding crack should meet design requirement.First order diaphram wall 1, second level diaphram wall 2 height answer
It is controlled and is adjusted when according to hydrogeologic condition and piping lane buried depth, waterproof measure will meet specification.
Between the first order diaphram wall 1 and second level diaphram wall 2 in left side, the first order diaphram wall on right side
The cast-in-place bottom plate 3 of the first order is provided between 1 and second level diaphram wall 2, the cast-in-place bottom plate 3 of the first order is located at level-one foundation pit
Bottom.The cast-in-place bottom plate 3 of the first order of the left and right sides is in sustained height and of same size, and the cast-in-place bottom plate 3 of the first order is used as level-one
The bottom surface of piping lane.The cast-in-place bottom plate 4 in the second level, the cast-in-place bottom plate in the second level 4 are provided between two-stage second level diaphram wall 2
In second level bottom of foundation ditch.Bottom surface of the cast-in-place bottom plate 4 in the second level as second level piping lane, position are lower than the cast-in-place bottom plate 3 of the first order.
The cast-in-place bottom plate 4 of the cast-in-place bottom plate 3 of the first order and the second level will be first by consolidation before construction, and intensity, thickness answer root
It is controlled and is adjusted according to hydrogeologic condition and piping lane buried depth.The cast-in-place bottom plate in the cast-in-place bottom plate 3 of the first order, the second level 4 is not according to
Different waterproof measures, the waterproofing grade of the cast-in-place bottom plate 4 in second level bottom plate 3 more cast-in-place than the first order are taken with hydrogeologic condition
The high level-one of waterproofing grade；Setting subsiding crack should be disconnected at a certain distance, at subsiding crack two sides bottom plate should be made into groove and tognue type or
It is lenticular.The cast-in-place bottom plate 4 in the cast-in-place bottom plate 3 of the first order, the second level and first order diaphram wall 1, second level diaphram wall 2
Link position should do consolidation process, and Ying Jiami arrangement of reinforcement takes tightened up waterproof measure.
Casting top slab 5, top surface of the casting top slab 5 as level-one piping lane are provided between two row of first stage diaphram walls 1.
The intensity of casting top slab 5, rigidity, thickness should be controlled and be adjusted according to hydrogeologic condition and top plate buried depth.Casting top slab 5
Different waterproof measures is taken according to different hydrogeologic conditions, should disconnect setting subsiding crack at a certain distance, at subsiding crack
Two sides bottom plate should be made into groove and tognue type or lenticular.The link position of casting top slab 5 and first order diaphram wall 1 should be done at reinforcing
Reason, Ying Jiami arrangement of reinforcement take tightened up waterproof measure.
The construction method for the piping lane system that above-mentioned multistage support is combined with main structure, specifically in accordance with the following steps into
Row:
One, the positioning of first order diaphram wall 1, construction
The position for determining first order diaphram wall 1 is designed according to piping lane, further according to tube lane dimension, design buried depth, the hydrology
Geological conditions estimates the buried depth and size of two row of first stage diaphram walls 1, finally carries out setting-out.
According to Loft Line, two long and narrow deep trouths are excavated out under conditions of mud off, should be carried out after the completion of excavation clear
Slot.Steel reinforcement cage is hung in slot after clear slot, then builds up a unit groove section with catheterized reperfusion underwater concrete, so paragraph by paragraph
It carries out, builds up the continuous armored concrete wall of twice in underground.Connector uses locking notch pipe technique, i.e., in perfusion slot section concrete
Before, a pre-inserted diameter and the equal steel pipe of groove width, i.e. locking notch pipe in the end of slot section.
Two, level-one excavation of foundation pit
Before level-one excavation of foundation pit, pipe well points precipitation is set.According to design requirement, in two row of first stage diaphram walls 1
Between carry out level-one excavation of foundation pit, excavated with high-front shovel within top layer 6m, 6m earthwork employment force-fitting excavator below
Dig dress.Dig good compacting place later.
Three, the positioning of second level diaphram wall 2, construction
The size of second level piping lane is determined according to water supply, drainage pipeline diameter, pipeline both sides clear distance and pipeline are apart from ground
No less than 400mm, second level piping lane are placed in level-one piping lane middle position.Determine therefrom that the position of second level diaphram wall 2, then
The buried depth and size of second level diaphram wall 2 are estimated according to tube lane dimension, design buried depth, hydrogeologic condition, it is most laggard
Row setting-out.It carries out second level diaphram wall 2 after setting-out to construct, construction process refers to first order diaphram wall 1
Construction.
Four, second level excavation of foundation pit
Before excavation of foundation pit, pipe well points precipitation is set.Second level foundation pit is excavated between two rows of second level diaphram walls 2,
Cutting depth is the height of second level piping lane.It is excavated within top layer 6m with high-front shovel, 6m earthwork employment force-fitting below is dug
Pick machine digs dress.Dig good compacting place later.
Five, the cast-in-place bottom plate 3 of the first order, the cast-in-place bottom plate 4 in the second level are poured
The construction for first carrying out the cast-in-place bottom plate 4 in the second level is coped with second level underground before constructing to the cast-in-place bottom plate in the second level 4 and is connected
Continuous wall 2 carries out bar planting, successively carries out formwork supporting plate after the completion of bar planting to the cast-in-place bottom plate in the second level 4, reinforcing bar binding, pours.Second
The cast-in-place bottom plate semi-finals degree of grade carries out apply similar with the cast-in-place bottom plate 4 in the second level to the cast-in-place bottom plate of the first order 3 again after reaching design requirement
Work process.It should be noted that the construction of waterproof measure is carried out according to design requirement before and after construction of bottom plates.The cast-in-place bottom plate 3 of the first order,
The cast-in-place bottom plate 4 of second level will take reinforcement measure, specific table with first order diaphram wall 1,2 junction of second level diaphram wall
It is now the increase of corner arrangement of reinforcement.
Six, casting top slab 5 is poured
Carry out the construction of casting top slab 5 again after cast-in-place 3 intensity of bottom plate of the first order reaches design requirement.Casting top slab 5
Between two row of first stage diaphram walls 1 and it is located at the top of level-one piping lane.First two row of first stage diaphram walls 1 are planted
Muscle successively carries out formwork supporting plate to casting top slab 5, reinforcing bar binding, pours after the completion of bar planting.Casting top slab 5 and first order underground connect
Continuous 1 junction of wall will take reinforcement measure, be embodied in the increase of corner arrangement of reinforcement.
Seven, backfill
Carry out backfill construction in 5 or more casting top slab, the compactness to be met of banketing, moisture content etc. require, with earth scraper,
For scraper etc. to the method spread out and put on using layering of banketing, the thickness of every layer of paving soil should be according to soil property, compactness requirement and equipment
It can determine that.When rolling, wheel (rammer) mark is mutually lapped, and anti-leak-stopping pressure, leakage are rammed.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited to upper
The specific embodiment stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common
Technical staff under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, may be used also
By make it is many in the form of specific transformation, within these are all belonged to the scope of protection of the present invention.
Claims (8)
1. the piping lane system that a kind of multistage support is combined with main structure, which is characterized in that be the level-one of rectangle by section
Piping lane and second level piping lane are constituted, and the second level piping lane is located at level-one piping lane lower part and width is narrower than the level-one piping lane；
Side wall of the two row of first stage diaphram walls as the level-one piping lane, between two rows of first order diaphram walls
The soil body digs out to form level-one foundation pit；Height is provided between two rows of first order diaphram walls lower than the first order underground
Two rows of second level diaphram walls of diaphragm wall, side wall of two rows of second level diaphram walls as second level piping lane are two rows of
The soil body between the second level diaphram wall digs out to form second level foundation pit；
It is existing in the level-one bottom of foundation ditch between the ipsilateral first order diaphram wall and the second level diaphram wall
Field has poured the cast-in-place bottom plate of the first order；The cast-in-place bottom plate of the first order of the left and right sides is in sustained height, and the first order is existing
Pour the bottom surface that bottom plate forms the level-one piping lane；Between two rows of second level diaphram walls, in the second level bottom of foundation ditch
Cast in situs has the cast-in-place bottom plate in the second level, and the cast-in-place bottom plate in the second level forms the bottom surface of the second level piping lane；
Cast in situs has casting top slab between two rows of first order diaphram walls, and the casting top slab is as the level-one pipe
The top surface of corridor；
The first order diaphram wall, the second level diaphram wall, the cast-in-place bottom plate of the first order, described as a result,
The cast-in-place bottom plate of second level, the casting top slab collectively form the piping lane system that multistage support is combined with main structure.
2. the piping lane system that a kind of multistage support according to claim 1 is combined with main structure, which is characterized in that institute
State the middle position that second level piping lane is located at level-one piping lane lower part, i.e., the symmetrical centre of two rows of second level diaphram walls
Line is overlapped with the symmetrical center line of two rows of first order diaphram walls.
3. the piping lane system that a kind of multistage support according to claim 1 is combined with main structure, which is characterized in that institute
Second level piping lane is stated for placing water supply, drainage pipeline, the both sides clear distance and pipeline of placed pipeline are no less than apart from ground
400mm。
4. the piping lane system that a kind of multistage support according to claim 1 is combined with main structure, which is characterized in that institute
The waterproofing grade for stating the cast-in-place bottom plate in the second level is higher than the waterproofing grade of the cast-in-place bottom plate of the first order.
5. the piping lane system that a kind of multistage support according to claim 1 is combined with main structure, which is characterized in that institute
The link position for stating the cast-in-place bottom plate of the first order and the first order diaphram wall, the second level diaphram wall is done at reinforcing
The link position of reason, the cast-in-place bottom plate in the second level and the second level diaphram wall does consolidation process.
6. the piping lane system that a kind of multistage support according to claim 1 is combined with main structure, which is characterized in that institute
The link position for stating casting top slab and the first order diaphram wall does consolidation process.
7. a kind of construction party for the piping lane system that the multistage support as described in any one of claim 1-6 is combined with main structure
Method, which is characterized in that this method follows the steps below:
(1) position, buried depth and the size that the first order diaphram wall is determined according to design, after carrying out setting-out, construction
Two row of first stage diaphram walls；
(2) level-one excavation of foundation pit is carried out between two rows of first order diaphram walls；
(3) position, buried depth and the size that the second level diaphram wall is determined according to design, after carrying out setting-out, construction
Two rows of second level diaphram walls；
(4) second level excavation of foundation pit is carried out between two rows of second level diaphram walls；
(5) bar planting is carried out to the second level diaphram wall, the cast-in-place bottom plate in the second level is successively carried out after the completion of bar planting
Formwork supporting plate, pours reinforcing bar binding；After the cast-in-place base plate strength in the second level reaches design requirement, to the cast-in-place bottom of the first order
Plate successively carries out formwork supporting plate, reinforcing bar binding, pours；
(6) after the cast-in-place base plate strength of the first order reaches design requirement, bar planting is carried out to the first order diaphram wall, is planted
Formwork supporting plate is successively carried out after the completion of muscle to the casting top slab, reinforcing bar binding, is poured；
(7) backfill construction is carried out more than the casting top slab.
8. the construction method for the piping lane system that a kind of multistage support according to claim 7 is combined with main structure,
It is characterized in that, according to design requirement before and after the cast-in-place bottom plate in the second level of step (5) and the cast-in-place construction of bottom plates of the first order
Carry out the construction of waterproof measure.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113836624A (en) * | 2021-09-23 | 2021-12-24 | 西南科技大学 | Calculation method for vertical compression settlement of segmental wall foundation |
| CN114809635A (en) * | 2022-06-10 | 2022-07-29 | 天津大学 | Full-assembly integral concrete shear wall high-rise dwelling interpenetration construction method |
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| CN103603357A (en) * | 2013-10-12 | 2014-02-26 | 姚攀峰 | Multi-platform inner-support-free self-waterproof foundation pit retaining structure and construction method thereof |
| CN106638670A (en) * | 2017-01-20 | 2017-05-10 | 福建省建筑设计研究院 | Semi-prefabricated pipe gallery and construction method |
| WO2017206412A1 (en) * | 2016-06-03 | 2017-12-07 | 长沙远大住宅工业集团股份有限公司 | Superimposed assembly-type underground pipe gallery system and construction and manufacturing process |
| CN207672609U (en) * | 2017-11-02 | 2018-07-31 | 西安交通大学 | A kind of foundation pit supporting construction also serves as the pipe gallery of main body |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103603357A (en) * | 2013-10-12 | 2014-02-26 | 姚攀峰 | Multi-platform inner-support-free self-waterproof foundation pit retaining structure and construction method thereof |
| WO2017206412A1 (en) * | 2016-06-03 | 2017-12-07 | 长沙远大住宅工业集团股份有限公司 | Superimposed assembly-type underground pipe gallery system and construction and manufacturing process |
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| CN207672609U (en) * | 2017-11-02 | 2018-07-31 | 西安交通大学 | A kind of foundation pit supporting construction also serves as the pipe gallery of main body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113836624A (en) * | 2021-09-23 | 2021-12-24 | 西南科技大学 | Calculation method for vertical compression settlement of segmental wall foundation |
| CN114809635A (en) * | 2022-06-10 | 2022-07-29 | 天津大学 | Full-assembly integral concrete shear wall high-rise dwelling interpenetration construction method |
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