CN109306712A - Upper pipe working well is inverse to build construction - Google Patents
Upper pipe working well is inverse to build construction Download PDFInfo
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- CN109306712A CN109306712A CN201810358975.XA CN201810358975A CN109306712A CN 109306712 A CN109306712 A CN 109306712A CN 201810358975 A CN201810358975 A CN 201810358975A CN 109306712 A CN109306712 A CN 109306712A
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- construction
- well
- earth excavation
- active well
- lining
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Classifications
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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
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
Abstract
The invention discloses a kind of upper pipe working wells against construction is built, and is first to dig round-seal reservoir；Building enclosure is formed using three axis cement mixing column water-stop curtains；Active well makes pile block collar beam on fender post, carries active well dead load using collar tie beam, guarantees that active well overcomes self weight, build construction to subinverse section by section, with digging with production armored concrete liner；The arch formed using self structure is kept out soil lateral pressure, guarantees the safety of well as horizontally-supported.Using this engineering method construction working well, it can use active well self structure and carry out foundation pit enclosure, guarantee security of foundation ditch construction, while reducing base pit engineering amount, reduce foundation pit enclosure stake and support, construction reduction structure construction scaffold is built using inverse, reduces construction height, evades construction risk, template turnover material project amount is reduced simultaneously, simplify construction technology, save the construction period, reduces the influence to neighbouring buildings or structures and road and surrounding enviroment.
Description
Technical field
The present invention relates to a kind of upper pipe working wells against construction is built, and belongs to architectural engineering construction technique field.
Background technique
Reverse construction is a kind of Building technology, is column, beam and the top plate for first building underground engineering, then as bearing structure
Part, restore traffic above-ground on top, and lower part carries out a kind of method of soil excavation and underground main body engineering construction.Using reverse construction
Construction, since basement can construct simultaneously with superstructure, the total construction period of engineering can be made to shorten；Due to utilizing basement
Beam slab floor structure supported as the inside of diaphram wall, thus foundation pit deformation is small, and the sedimentation of adjacent buildings is small；With
Conventional method compares, and reversed Construction Method sole plate is easier to meet anti-floating requirement, and back-plane design is made to tend to be reasonable；Due to saving
The support of supporting knot hook, is also greatly reduced operating expenses.
With urban development, the original mating storm sewer in emerging business district periphery is unable to satisfy the demand of municipal drainage,
Therefore upgrading need to be transformed to storm-water system in infrastructure.But since such engineering is usually located at bustling shopping centre model
In enclosing, within the scope of engineering drainage pipeline construction, surrounding enviroment and line conditions are complicated, and this kind of engineering rain pipe generallys use
Jacking construction.Jacking construction process will include multiple active wells, multiple received wells, and many upper pipe working wells are all located at urban district friendship
How how cross road mouth carry out upper pipe working well against construction is built under this complex environment, be those skilled in the art's needs
The technical problem solved.
Summary of the invention
The object of the present invention is to provide a kind of upper pipe working wells against construction is built, to solve the construction in city complexity
The problem of jacking construction is carried out under environment.
Technical scheme is as follows:
The present invention, which is that a kind of upper pipe working well is inverse, builds construction, mainly first digs round-seal reservoir；Using three axis cement
Teeter column water-stop curtain forms building enclosure；Active well makes pile block collar beam on fender post, carries active well knot using collar tie beam
Structure self weight, guarantees that active well overcomes self weight, builds construction to subinverse section by section, with digging with production armored concrete liner；Utilize itself
The arch that structure is formed keeps out soil lateral pressure, guarantees the safety of well as horizontally-supported.
Specifically, this method comprises the following steps:
Step 1: surveying setting-out；
Step 2: going along with sb. to guard him construction；
Step 3: precipitation；
Step 4: the 1st earth excavation；
Step 5: the 1st lining construction；
Step 6: maintenance to 100% intensity；
Step 7: the 2nd earth excavation；
Step 8: the 2nd lining construction；
Step 9: maintenance to 80% intensity；
Step 10: the 3-6 times earth excavation；
Step 11: the 3-6 times lining construction；
Step 12: the 3-6 times maintenance to 80% intensity；
Step 13: the 7th earth excavation；
Step 14: the 7th lining construction.
Using this engineering method construction working well, it can use active well self structure and carry out foundation pit enclosure, guarantee foundation pit construction
Safety, while reducing base pit engineering amount, reduction foundation pit enclosure stake and support build construction reduction structure construction scaffold using inverse,
Reduce construction height, evade construction risk, while reducing template turnover material project amount, simplifies construction technology, save construction work
Phase reduces the influence to neighbouring buildings or structures and road and surrounding enviroment.
This engineering method is suitable for the concrete structure that structure itself is cylinder or square tube, and buried depth is big, globality is strong, stablizes
Property it is good, carrier non-deformability is strong, job location is located at urban core region, and place has excavation face small, and cutting depth is big
The characteristics of.
Detailed description of the invention
Fig. 1 illustrates the inverse composition and workflow for building construction of upper pipe working well；
Fig. 2 illustrates the query statistic that target rock mass portion structure shows head；
Schematic illustration that Fig. 3 illustrates occurrence deviation, angular deviation screening structural plane is appeared；
Fig. 4 illustrates the structural plane three-dimensional geological model that interpretation obtains；
Fig. 5 illustrates Dam Site filling structural plane advantage grouping；
Fig. 6 illustrates middle dam site filling structural plane (left side) and workshop area tomography (right side) distribution statistics；
Fig. 7 illustrates first group of workshop area tomography and visualizes；
Fig. 8 illustrates first group of workshop area tomography spatial contrast (left side), Character Comparison (right side) the selection result.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, but not as any limitation of the invention.
Embodiment 1:
Certain project " mating two bid section of first stage of the project of Hongqiao business district east section comprehensive reformation municipal administration " project is located at Shanghai City
Within the scope of the east section of Hongqiao business district, since within the scope of the pipeline construction of this engineering drainage, surrounding enviroment and line conditions are complicated,
It include: communication line, aviation fuel pipe, urban district Utilities Electric Co. cable, mass gas company burning line, Hongqiao Airport power pipe
Line, rain sewage pipeline, so, the DN2700-DN3500 rain pipe of five road closest friend Le Lu of welcome uses jacking construction.Push pipe is applied
Work process includes 2 active wells altogether, 2 received wells, wherein 4# upper pipe working well be located at the road You Le and welcome all the way intersection to
The happy road of the happy north of a road 30m friend of friend, the road You Le is two-way lane, wherein direction is two-way traffic from south to north, north-to-south direction exists
The happy north of a road side of friend becomes Four-Lane Road, heavy traffic from two-way traffic.In order to reduce in upper pipe working well work progress to city road
The influence of the complicated underground utilities of road traffic and periphery, upper pipe working well build construction using inverse.
In the project, active well is φ 13.6m, digs the round-seal reservoir of depth 14.17m；Using the drill-pouring of φ 1000
The three axis cement mixing column water-stop curtains of+φ 850 form building enclosure；Active well makes pile block collar beam on fender post, utilizes
Collar tie beam carries active well dead load, guarantees that active well overcomes self weight, builds construction to subinverse section by section, mixed with production reinforcing bar with digging
Solidifying soil liner；The arch formed using self structure is kept out soil lateral pressure, guarantees the safety of well as horizontally-supported.
Construction technology process are as follows: surveying setting-out → go along with sb. to guard him the construction → precipitation → 1st time earth excavation → 1st time earthwork is opened
→ the 1 lining construction → maintenance is dug to 100% intensity → 2nd time earth excavation → 2nd time lining construction → maintenance to 80%
Earth excavation → the 3-6 times lining construction → the 3-6 times of intensity → the 3-6 times conserves to 80% intensity → 7th time earth excavation
→ the 7 lining construction.
4# works 13.50 meters of well construction overall height, and points seven sections from top to bottom with cutting the earth and carry out liner structure construction.
First time shoveling absolute altitude from 3.870 to 2.170, shoveling 1.7m → pour collar tie beam, lining cutting etc., lining cutting bottom absolute altitude
2.570 → second shoveling absolute altitudes are from 2.170m to -1.000m, shoveling 3.17m → pour high 3.170m → precipitation → the of building lining
Shoveling absolute altitude is from -1.000m to -3.000m three times, shoveling 2.0m → pour building lining high 2.0m → four time shoveling absolute altitude from -
3.000m to -5.000m, shoveling 2.0m → pour building lining high 2.0m → five time shoveling absolute altitude from -5.000m to -7.000m,
Shoveling 2.0m → pour building lining high 2.0m → six time shoveling absolute altitude is from -7.000m to -9.000m, shoveling 2.0m → seven time
Shoveling absolute altitude from -9.000m to substrate → pour bed course, pour bottom plate, lining cutting etc..
Main points of operation:
1 goes along with sb. to guard him construction
The design parameter of building enclosure is as shown in the table:
1 4# active well of table goes along with sb. to guard him way table
It is as shown in Figure 1 that 4# active well goes along with sb. to guard him construction plan.
2 earth excavations and lining cutting are inverse to build construction
4# push pipe work well cutting depth 14.6m, earth volume is about are as follows: 2200m3, active well reversed Construction Method, with digging with system
Make armored concrete liner.Soil layer in influence of foundation excavation depth bounds have 1., 3., 4., 5. 1-1,5. 1-2,5. 2-1,
5. 2-2,5. layer 2-3, when shoveling: second of shoveling can be carried out when collar tie beam, lining cutting concrete strength reach 100% design strength；
Third time shoveling can be carried out when second of lining cutting concrete strength reaches 80% design strength for the inverse hole 4# for building construction, with
This analogizes, and can carry out the 7th shoveling for the 5th time when lining cutting concrete strength reaches 100% design strength, and live earth excavation is total
7 excavations are divided into,
First time earth excavation is excavated at absolute altitude 2.170m, and earth excavation depth about 1.7m, earth volume is about
246.82m3, lining cutting, lining cutting bottom absolute altitude 2.570 are carried out after the completion of the earthwork；Duration is 1 day, as shown in Figure 2.
Second of earth excavation is carried out when first time lining cutting concrete strength reaches 100% design strength, is excavated to absolute altitude-
At 1.000m, earth excavation depth about 3.170m, total earth volume about 460.26m3, second of lining cutting of progress, work after the earthwork has been dug
Phase is 1 day, as shown in Figure 3.
Third time earth excavation is carried out when second of lining cutting concrete strength reaches 80% design strength, is excavated to absolute altitude-
At 3.000m, earth excavation depth about 2.0m, earth volume about 290.38m3.Duration is 1 day, as shown in Fig. 4.
The 4th earth excavation is carried out when third time lining cutting concrete strength reaches 80% design strength, the 4th earthwork is opened
It digs, is excavated at absolute altitude 5.000m, earth excavation depth about 2.0m, earth volume about 290.38m3, the duration is 1 day, such as Fig. 5 institute
Show.
The 5th earth excavation is carried out when the 4th lining cutting concrete strength reaches 80% design strength, the 5th earthwork is opened
It digs, is excavated to the place absolute altitude -7.000m, earth excavation depth about 2.0m, earth volume about 290.38m3, the duration is 1 day, such as Fig. 6 institute
Show.
The 6th earth excavation is carried out when the 5th lining cutting concrete strength reaches 80% design strength, the 6th earthwork is opened
It digs, is excavated to the place absolute altitude -9.000m, earth excavation depth about 2.0m, earth volume about 290.38m3, the duration is 1 day, such as Fig. 7 institute
Show.
When the 5th lining cutting concrete strength reaches 100% design strength, the 6th lining cutting concrete strength reaches 80% design strength
When, the 7th earth excavation is carried out, the 7th earth excavation is excavated to the place absolute altitude -10.400m, and earth excavation depth is about
1.2m, earth volume about 174.23m3, the duration is 1 day, as shown in Figure 8.
Bed course is completed in 2h after the completion of the last layer earth excavation to pour, interior underplate concrete of completing pours for 24 hours,
Middle walls concrete is poured to the 30cm absolute altitude of bottom plate top, welds steel plate for sealing water.
3 lining cutting reinforcing bars
Steel bar meter answers straightening before bending, and surface grease stain, cement slurry and outer skin iron rust etc. should all be removed completely；Add
Rebar surface after work should not have the scar for weakening steel area；Align elongation using cold drawing method: I grade of reinforcing bar must not surpass
2% is crossed, II grade of reinforcing bar must not exceed 1%.
4 lining shutterings
Lining shuttering uses combined steel formwork and small punching block lining cutting, the disposable whole pouring construction of concrete.
Lining cutting punching block must have enough intensity, rigidity and stability.
It is firm that template installation must consolidate, and seam is tight, must not spillage.
Template surface wants smooth, must clean out with the contact surface of concrete and brushing interleaving agent.
5 concretings
Concrete self-template mouth pours into, should be symmetrical to be layered from bottom to top, inclines and falls free height no more than 2.0m.In concrete placings mistake
The case where Cheng Zhong, observation template, bracket, reinforcing bar, built-in fitting and reserving hole, should adopt in time when discovery has deformation, displacement
Take reinforcement measure.When in construction such as discovery pumping concrete slump deficiency, self-watering must not be arrogated to oneself, it should timely notification technique personnel
It is solved under its guidance with the method for additional water-reducing agent.
Concreting should be carried out continuously.When interval for some reason, when the intermittent time should be less than the initial set of preceding layer concrete
Between or the time that can remold.When being more than allows the intermittent time, by joint treatment, lining cutting concrete seam crossing must be carried out at dabbing
Reason.Vertical, circular construction joint according to design requirement be arranged in buried rubber fastening band.
Concreting lift height (referring to thickness after tamping) is preferably 1.25 times of vibrator effect partial length, but most
Big paving thickness is not preferably greater than 60cm.Newly pour pour novel concrete again in the lower-layer concrete of completion when, should be mixed in lower layer
It coagulates soil initial set or pours the upper layer concrete of completion before capable of remolding.
When casting concrete, concrete construction record should be filled in.
6 demouldings and maintenance
(1) secondary lining striking time should be met the following requirements:
Support Deformation is constructed after stablizing in the early stage, and secondary lining concrete strength should reach 8.0MPa or more.Initial stage branch
Shield is not stable, and concrete strength should reach 100% of design strength or more when secondary lining is constructed in advance.In special circumstances, it answers
Striking time is determined according to test and monitoring measurement result.
(2) start to conserve concrete within 12 hours after concreting, be conserved in time after stamping die,
Curing time is no less than 14 days.
It is above specific application example of the invention, there are other embodiments of the invention, all to use equivalent replacement
Or the technical solution that equivalent transformation is formed, it all falls within protection scope of the presently claimed invention.
Claims (2)
1. a kind of upper pipe working well is inverse to build construction, it is characterised in that: first dig round-seal reservoir；Using three axis cement mixing columns
Water-stop curtain forms building enclosure；Active well makes pile block collar beam on fender post, carries active well dead load using collar tie beam,
Guarantee that active well overcomes self weight, build construction to subinverse section by section, with digging with production armored concrete liner；It is formed using self structure
Arch as horizontally-supported, keep out soil lateral pressure, guarantee the safety of well.
2. upper pipe working well according to claim 1 is inverse to build construction, it is characterised in that this method comprises the following steps:
Step 1: surveying setting-out；
Step 2: going along with sb. to guard him construction；
Step 3: precipitation；
Step 4: the 1st earth excavation；
Step 5: the 1st lining construction；
Step 6: maintenance to 100% intensity；
Step 7: the 2nd earth excavation；
Step 8: the 2nd lining construction；
Step 9: maintenance to 80% intensity；
Step 10: the 3-6 times earth excavation；
Step 11: the 3-6 times lining construction；
Step 12: the 3-6 times maintenance to 80% intensity；
Step 13: the 7th earth excavation；
Step 14: the 7th lining construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358975.XA CN109306712A (en) | 2018-04-20 | 2018-04-20 | Upper pipe working well is inverse to build construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358975.XA CN109306712A (en) | 2018-04-20 | 2018-04-20 | Upper pipe working well is inverse to build construction |
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| Publication Number | Publication Date |
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| CN109306712A true CN109306712A (en) | 2019-02-05 |
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| CN201810358975.XA Pending CN109306712A (en) | 2018-04-20 | 2018-04-20 | Upper pipe working well is inverse to build construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412472A (en) * | 2020-11-09 | 2021-02-26 | 安徽省新路建设工程集团有限责任公司 | Pipe-jacking working well wall reverse-acting system in soft soil area and construction method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203160254U (en) * | 2012-11-15 | 2013-08-28 | 上海市政工程设计研究总院（集团）有限公司 | Pit support structure |
| CN106759383A (en) * | 2016-12-28 | 2017-05-31 | 郑倩 | A kind of reverse construction short section borehole wall pouring structure and construction method |
-
2018
- 2018-04-20 CN CN201810358975.XA patent/CN109306712A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203160254U (en) * | 2012-11-15 | 2013-08-28 | 上海市政工程设计研究总院（集团）有限公司 | Pit support structure |
| CN106759383A (en) * | 2016-12-28 | 2017-05-31 | 郑倩 | A kind of reverse construction short section borehole wall pouring structure and construction method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412472A (en) * | 2020-11-09 | 2021-02-26 | 安徽省新路建设工程集团有限责任公司 | Pipe-jacking working well wall reverse-acting system in soft soil area and construction method and application thereof |
| CN112412472B (en) * | 2020-11-09 | 2022-11-18 | 安徽省新路建设工程集团有限责任公司 | Pipe-jacking working well wall reverse-acting system in soft soil area and construction method and application thereof |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190205 |
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| RJ01 | Rejection of invention patent application after publication |