CN103015456B - Rapid pit-in-pit form erecting method in foundation slab of buried concrete structure - Google Patents

Rapid pit-in-pit form erecting method in foundation slab of buried concrete structure Download PDF

Info

Publication number
CN103015456B
CN103015456B CN201110280846.1A CN201110280846A CN103015456B CN 103015456 B CN103015456 B CN 103015456B CN 201110280846 A CN201110280846 A CN 201110280846A CN 103015456 B CN103015456 B CN 103015456B
Authority
CN
China
Prior art keywords
steel plate
pit
hole
plate box
box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201110280846.1A
Other languages
Chinese (zh)
Other versions
CN103015456A (en
Inventor
王亮
王治军
苏元洪
周煜源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MCC5 Group Shanghai Corp Ltd
Original Assignee
MCC5 Group Shanghai Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MCC5 Group Shanghai Corp Ltd filed Critical MCC5 Group Shanghai Corp Ltd
Priority to CN201110280846.1A priority Critical patent/CN103015456B/en
Publication of CN103015456A publication Critical patent/CN103015456A/en
Application granted granted Critical
Publication of CN103015456B publication Critical patent/CN103015456B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention relates to a rapid pit-in-pit form erecting method in a foundation slab of a buried concrete structure. The method is characterized by comprising the following steps: a, steel plate box prefabrication; b, pit digging for placing a steel plate box comprises the following steps of: (1) dewatering a foundation pit, digging to the elevation of a slab of the buried structure, and releasing a pit-in-pit normal control wire; (2) continuously digging deep to the bottom elevation of the pit-in-pit slab to form a pit for storing the steel plate box; (3) placing the steel plate box into the dug pit through a construction machinery; and (4) simultaneously pouring blinding concrete at the periphery of the steel plate box and the slab of the structure, so as to be closed as a whole and avoid inburst of muddy water and drift sand; and c, construction of pit-in-pit steel reinforced ribs and an internal temperate in the steel plate box, bonding the pit-in-pit steel reinforced ribs and the internal temperate with the steel reinforced ribs of the slab of the buried structure, and pouring concrete. The rapid pit-in-pit form erecting method in the foundation slab of the buried concrete structure has the advantages of simplifying the construction procedures, and being applicable to engineering with higher buried water level and longer rainfall period.

Description

Quick template supporting method is cheated in hole in underground concrete structure base base plate
Technical field
The present invention relates to a kind of mold method of construction work underground concrete structure base base plate, specifically, is cheat quick template supporting method in the hole in a kind of underground concrete structure base base plate.
Background technology
The usual buried depth of underground concrete structure is-4m ~-7m, what have even reaches-9m, as metallurgical industry underground cable tunnel, piping lane etc., these underground structures are generally all designed with sump, to solve drainage problem, the sump degree of depth is at more than 1200mm, and size is about 2000x2000mm, because sump is nested in base plate foundation ditch, so be commonly called as " cheating in hole ".When the foundation excavation of underground structure is to floor level, also need the sump excavated wherein, because underflow springs up, " cheat " difficulty of construction in hole larger, after carrying out precipitation process, though the degree of depth of " cheating in hole " can be excavated, in the rainfall multiple phase, amount of rainfall is concentrated, foundation trench steeps in water soon, if in chiltern soil layer area, more cause quicksand phenomenon, slope protection pile is also easily washed upside down, and " cheating in hole " fills quicksand.
Adopt traditional formwork (or brick fetal membrane) method must wait for that water level is down to below design elevation, precipitation, desilting need 7 ~ 10 day time, template is propped up and is torn (or laying bricks) open and also take day, if period be can't stop quicksand or meets heavy rain, very easily producing water burst causes secondary to construct, and working-day claims can be longer.
Chinese patent CN100572686C discloses the construction technology of cheating support system in a kind of hole on March 13rd, 2008, wherein support system makes and sets up and adopts open caisson manufacture and erection, utilizes open caisson barrel to double as outside loose tool as the support system in hole in hole.Although this construction method has it to save the advantages such as template consumption, but it still belongs to a tradition modular category, still there is loaded down with trivial details working procedure and the problem of long construction period, more be not suitable for that groundwater table is higher, cycle in precipitation is longer or engineering is in rainy season and the duration is nervous, require to assault the engineering of trying to meet the deadline for the project.
The formwork construction method of cheating support system in therefore known hole also exists above-mentioned all inconvenience and problem.
Summary of the invention
Object of the present invention, is to propose the loaded down with trivial details working procedure of a kind of simplification, shortens cycle in precipitation, save in the hole in the underground concrete structure base base plate of precipitation One-Shift Costs and cheat quick template supporting method.
Another object of the present invention, is to propose one and is applicable to that groundwater table is higher, cycle in precipitation is longer or engineering is in rainy season and the duration is nervous, require to cheat quick template supporting method in the hole in the underground concrete structure base base plate of the engineering that assault is tried to meet the deadline for the project.
For achieving the above object, technical solution of the present invention is:
Cheat a quick template supporting method in hole in underground concrete structure base base plate, it is characterized in that comprising the following steps:
A, prefabricated " steel plate box "
Described steel plate box is a uncovered steel beam column become with base plate steel plate vertical welding by surrounding sidewall steel plate, the design drawing size (only growing) that the length and width of steel plate box equal to cheat in hole respectively adds 2 times of mixed earth thickness (wall thickness), highly equal the degree of depth in hole in cheating and add the surplus of about 200mm, sidewall steel plate and Bottom Board Steel plate thickness are 3mm;
B, placement of digging pit " steel plate box ", comprise following steps:
(1) foundation pit dewatering, be excavated to the floor level of underground structure, release the normal control wire in hole in hole;
(2) continue to deep-cut the elevation of bottom of cheating base plate in hole, form the hole of placing " steel plate box ";
(3) with construction machinery " steel plate box " put in the hole dug;
(4) in " steel plate box " surrounding and pour into a mould blinding concrete with structure base plate simultaneously, make it to close and be linked to be entirety, avoid pouring in of muddy water, quicksand;
C, the reinforcing bar of cheating in construction hole in " steel plate box " and inner formword, make it integral with underground structure base plate steel bar binding, simultaneously fluid concrete.
Cheat quick template supporting method in hole in underground concrete structure base base plate of the present invention can also be further achieved by the following technical measures.
Aforesaid method, is welded with twice angle stiffener outside the box wall of wherein said steel plate box up and down.
Aforesaid method, wherein said step b(3) in, in cheating, have infiltration very soon, buoyancy of water makes, and " steel plate box " is floating, now can be pressed into sand pocket in steel plate box and make it firm.
After adopting technique scheme, cheat quick template supporting method in the hole in underground concrete structure base base plate of the present invention and have the following advantages:
1, simplify loaded down with trivial details working procedure, shorten cycle in precipitation, precipitation One-Shift Costs can be saved;
2, be specially adapted to that groundwater table is higher, cycle in precipitation is longer or engineering is in rainy season and the duration is nervous, require to assault the engineering of trying to meet the deadline for the project.
Accompanying drawing explanation
Fig. 1 is the floor map of the steel plate box of the embodiment of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1.
In figure: 1 steel plate box length, 2 steel plate box width, 3 steel plate box height, 4 angle steel.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is illustrated further.
Embodiment 1
Cheat quick template supporting method in hole in underground concrete structure base base plate of the present invention, comprise the following steps:
Now please see Figure 1 ~ Fig. 3, Fig. 1 is the floor map of the steel plate box of the embodiment of the present invention, and Fig. 2 is the A-A sectional view of Fig. 1, and Fig. 3 is the B-B sectional view of Fig. 1.
1, make " steel plate box " in advance, because of the exterior sheathing that " steel plate box " is as " cheating in hole ", so the design drawing size (only growing) that the length and width of " steel plate box " equal " cheating in hole " respectively adds 2 times of mixed earth thickness (wall thickness), the degree of depth highly equaling " cheating in hole " adds the surplus of about 200mm (because of underground structure bottom cushion thickness 100mm, also need separately to add altitude margin for flowing into cement mortar when preventing from beating bed course), the wide * height of * as long in " cheating in hole " is: 2000*2000*1000mm, R.C. wall board thickness is 200mm, the wide * of long * high (L*D*H) manufactured size of " steel plate box " is respectively: 2400*2400*1200mm.Steel plate thickness 3mm welding fabrication, and twice angle stiffener is welded up and down outside box wall, the effect of reinforcing rib has 2 points:
(1) thin-walled part is yielding in the processes such as welding, transport, lifting, and even weld seam is by drawing crack, and reinforcing rib increases the integral rigidity of " steel plate box ";
(2) making that " steel plate box " is floating is difficult to firm position because cheating interior collection buoyancy of water, outside box wall surrounding, having had reinforcing rib, can be combined with the concrete of packing layer immediately and form anchored force.
2, foundation pit dewatering, be excavated to the floor level of underground structure, then release the normal control wire of " cheating in hole ", continue the elevation of bottom deep-cutting " cheating in hole " base plate, use immediately crane " steel plate box " put in the hole dug.Infiltration is had very soon in cheating, buoyancy of water makes, and " steel plate box " is floating, at this moment can be pressed into sand pocket firm in box, and rapidly in " steel plate box " surrounding and pour into a mould blinding concrete with structure base plate simultaneously, make it to close and be linked to be entirety, avoid pouring in of muddy water, quicksand.
3, to construct in " steel plate box " reinforcing bar of " cheating in hole " and inner formword, make it integral with underground structure base plate steel bar binding, fluid concrete simultaneously.
Cheat quick template supporting method in hole in underground concrete structure base base plate of the present invention and move steel two cold-rolled orientation silicon steel project in Tangshan, build terrace, river, genus Xisha, place, sand, flour sand geological condition.Groundwater type is diving, and aquifer is mainly layer of sand, and soil excavation is just locating the rainfall multiple phase, and amount of rainfall is concentrated, underground cable tunnel floor absolute altitude-4.7m ~-5.9m, sump floor level-6.9m ~-7.2m.
Dig in soil excavation process and occur infiltration to-4.7m, arrange dewatering construction, the open fire produced is carried out to fluting is outer leads simultaneously, guide to the outer darker sump of foundation trench, and guide to plant area's sewer pipe with water pump in time and arrange outward.The principle that sump takes first precipitation to excavate again is constructed.
Precipitation just after effective fruit, then in the second time excavation carried out, is also failed to dig design elevation and is just occurred drift sand, and in digging process, to dig foundation ditch sectional area increasing under the effect of drift sand.Increase water pump and carry out bright draining, local drift sand phenomenon aggravation, slope protection pile is washed upside down, the foundation trench shambles excavated.
Adopt in the hole in underground concrete structure base base plate of the present invention and cheat quick template supporting method and made " steel plate box ", very good through onsite application effect, solve bottleneck problem, reseize the duration.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or change.Therefore, all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.

Claims (3)

1. cheat a quick template supporting method in the hole in underground concrete structure base base plate, it is characterized in that comprising the following steps:
A, prefabricated " steel plate box "
Described steel plate box is a uncovered steel beam column become with base plate steel plate vertical welding by surrounding sidewall steel plate, the design drawing size that the length and width of steel plate box equal to cheat in hole respectively adds 2 times of concrete wall thickness, highly equal the degree of depth in hole in cheating and add the surplus of 200mm, sidewall steel plate and Bottom Board Steel plate thickness are 3mm;
B, placement of digging pit " steel plate box ", comprise following steps:
(1) foundation pit dewatering, be excavated to the floor level of underground structure, release the normal control wire in hole in hole;
(2) continue to deep-cut the elevation of bottom of cheating base plate in hole, form the hole of placing " steel plate box ";
(3) with construction machinery " steel plate box " put in the hole dug;
(4) in " steel plate box " surrounding and pour into a mould blinding concrete with structure base plate simultaneously, make it to close and be linked to be entirety, avoid pouring in of muddy water, quicksand;
C, the reinforcing bar of cheating in construction hole in " steel plate box " and inner formword, make it integral with underground structure base plate steel bar binding, simultaneously fluid concrete.
2. cheat quick template supporting method in the hole in underground concrete structure base base plate as claimed in claim 1, it is characterized in that, outside the box wall of described steel plate box, be welded with twice angle stiffener up and down.
3. cheat quick template supporting method in the hole in underground concrete structure base base plate as claimed in claim 1, it is characterized in that, described step b(3) in, sand pocket can be pressed in steel plate box and make it firm.
CN201110280846.1A 2011-09-21 2011-09-21 Rapid pit-in-pit form erecting method in foundation slab of buried concrete structure Active CN103015456B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110280846.1A CN103015456B (en) 2011-09-21 2011-09-21 Rapid pit-in-pit form erecting method in foundation slab of buried concrete structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110280846.1A CN103015456B (en) 2011-09-21 2011-09-21 Rapid pit-in-pit form erecting method in foundation slab of buried concrete structure

Publications (2)

Publication Number Publication Date
CN103015456A CN103015456A (en) 2013-04-03
CN103015456B true CN103015456B (en) 2015-05-06

Family

ID=47964518

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110280846.1A Active CN103015456B (en) 2011-09-21 2011-09-21 Rapid pit-in-pit form erecting method in foundation slab of buried concrete structure

Country Status (1)

Country Link
CN (1) CN103015456B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103938635A (en) * 2014-03-27 2014-07-23 巨匠建设集团有限公司 Method for conducting foundation pit bevel bed course construction by adopting inverted trapezoidal template
CN104947677B (en) * 2014-03-28 2017-04-19 中国二十冶集团有限公司 Rapid cofferdam filling construction method for pit in pit
CN107542157A (en) * 2016-06-28 2018-01-05 五冶集团上海有限公司 A kind of rapid shaping construction method of underground catch pit
CN107780418A (en) * 2016-08-29 2018-03-09 中国二十冶集团有限公司 The rapid constructing method cheated in Deep Foundation Pit
CN106759372A (en) * 2016-11-12 2017-05-31 中国二十二冶集团有限公司 Deep basal pit bank protection, the construction method of precipitation integrated construction nearer apart from side slope
CN107288156B (en) * 2017-07-27 2020-12-22 平湖市开元混凝土股份有限公司 Construction method of underground special-shaped water pool
CN107938681A (en) * 2017-11-26 2018-04-20 上海宝冶集团有限公司 Way after concrete sump
CN108708384A (en) * 2018-04-13 2018-10-26 五冶集团上海有限公司 A kind of construction method for building sump brick mold using precast frame template

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100805967B1 (en) * 2006-12-01 2008-02-25 박옥교 Combination structure of sump
CN101245602A (en) * 2008-03-13 2008-08-20 王形 Construction technique for pits in foundation-pit support system
KR20090000365A (en) * 2007-06-28 2009-01-07 엄기형 Connecting structure of sump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100805967B1 (en) * 2006-12-01 2008-02-25 박옥교 Combination structure of sump
KR20090000365A (en) * 2007-06-28 2009-01-07 엄기형 Connecting structure of sump
CN101245602A (en) * 2008-03-13 2008-08-20 王形 Construction technique for pits in foundation-pit support system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
农村户用沼气池地下水的处理;司马义江;《农村科技》;20090331(第3期);89 *
竹仙洞水库供水隧洞沙梨沟检修竖井的施工设计;张勇等;《广西交通科技》;20010330(第1期);55-56 *

Also Published As

Publication number Publication date
CN103015456A (en) 2013-04-03

Similar Documents

Publication Publication Date Title
CN104612162B (en) A kind of Deep Foundation Pit of Metro Stations excavation construction method
CN103741714B (en) Underground engineering full sheltered reverse excavation construction method
US9567720B2 (en) Offshore platform for a marine environment
CN103590425B (en) A kind of Peaty soft soil stratum subway station construction technology
CN103981898B (en) A kind of inverse underground engineering construction method done of overall open cut node
CN102094425B (en) Foundation pit construction method adopting shallow buried depth Larsen steel plate pile as protective cofferdam
CN105002913B (en) A kind of highly permeable stratum deep basal pit back cover water sealing structure and its construction method
CN105089061B (en) Ultra-deep foundation pit supporting method
CN105386408B (en) Deep-water bridge pile foundation construction method
CN102454167B (en) The construction method of especially big & deep open caisson
CN105003270B (en) Underwater tunnel construction method suitable for ultra-shallow earthing conditions
CN101139838B (en) Construction method for high artesian area ultra-deep foundation pit
CN101914925B (en) Basement by using optimized composite prefabricated arch wall as external wall
CN104675403A (en) Underground space construction method and supporting structure
CN103195076B (en) Muddy Bottoms deep-excavation tower crane foundation construction method
CN100387785C (en) Hydraulic sheeting and use method thereof
CN101148890B (en) Bridge caisson composite pile foundation and reverse construction method thereof
CN103882881B (en) Go deep into rock construction method under water
CN105672348A (en) Construction method for cropping bridge pile foundation at sandy gravel stratum of abyssal region
CN203947484U (en) A kind of drainage of foundation pit and circulating water utilization system
CN101691751B (en) Construction method for making ultra-long artificial excavating pile penetrate cave and ultra-long pile penetrating cave
CN103321241B (en) Deep water open type combination foundation harbour and construction method thereof
CN100455731C (en) Guide pit type manual pot holing pile reinforing and underpinning method for building foundation and composite supporting pile
CN102828520A (en) Ring-shaped inner supporting structure used in deep peat soil deep foundation pit
CN108442382B (en) In-situ protection and enclosure soil-retaining structure for pressure pipeline crossing deep foundation pit and construction method

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model