CN101353896A - Semi-inverse construction method of super large diameter, ultra-burial depth storage pond - Google Patents
Semi-inverse construction method of super large diameter, ultra-burial depth storage pond Download PDFInfo
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- CN101353896A CN101353896A CNA2008101241442A CN200810124144A CN101353896A CN 101353896 A CN101353896 A CN 101353896A CN A2008101241442 A CNA2008101241442 A CN A2008101241442A CN 200810124144 A CN200810124144 A CN 200810124144A CN 101353896 A CN101353896 A CN 101353896A
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Abstract
The invention relates to a semi-reverse construction method for a regulation pool with huge diameter and embedded depth, which relates to the technical field of building engineering construction, in particular to a construction method technique of a regulation pool with the diameter more than 30m and the embedded depth exceeding 7m. An SMW method pile is adopted in the retaining and protecting structure of the invention, and the manufacturing procedures are a pool top cover, an upper pool wall, a pool motherboard and a lower pool wall. The method combines the excellent performances of the bottom-up method and the reverse method, can not only realize the construction safety of the regulation pool, but also save the expenses of supporting and protecting the structure because deformation displacement in complicated surrounding environment is controlled. In addition, a construction process has little water penetration and is characterized by saving labor force and construction cost.
Description
Technical field
The present invention relates to project building construction technical field, particularly diameter surpass the storage pond of 7m greater than 30m, buried depth construction technology.
Background technology
The rainwater storage pond is the environmental protection new things of just having introduced from external; its major function is to collect road early-stage rainwater (because of having a large amount of dusts, greasy dirt rubbish etc. in the early-stage rainwater); treat day fine rain sewage house steward of damming that calls in again after interim the storage, sewage through processing up to standard after discharging again.
Storage pond is seated in business district and rivers limit mostly, general surrounding enviroment more complicated, and top cover overburden layer 2～3m is thick in the pond, and top can construction of buildings, structure or plantation greening.Its engineering structures form is underground fully buried steel concrete circular pool structure, diameter 30m～50m, pond degree of depth 7m～15m, the pond base plate all is the bottom of a pan shape, and peripheral high center is low, and with certain gradient aspect central pump hole, average 10m～the 20m of pond baseboard buried depth, central pump hole diameter 4m～8m, central pump is cheated than dark 2m～3m at the bottom of the pond, is convenient to draining-off sewage.Engineering piles adopts bored pile at the bottom of the pond.
Existing two kinds of job practicess, a kind of is along the practice, promptly face down excavation below the storage pond degree of depth of design from ground, begin upwards construction from lower floor's ground, the danger of this method infiltration greatly, not only outwards draining is constantly caved in around also easily causing, and building foundation is on every side influenced big; Second kind is contrary sequence method, promptly excavation is gone up the thickness on top earlier, to go up after the top performs, the height that excavates out the epimere pool wall all around downwards on last top, treat that the epimere pool wall forms after, excavate out the hypomere pool wall downwards, after treating that the hypomere pool wall forms, make at last at the bottom of the pond, the defective of this method is: after the hypomere pool wall forms, must increase by one steel work horizontal support, at the bottom of the pond of could constructing then.So not only waste the steel work horizontal support one, bring certain difficulty also for pond bottom application worker, the steel work horizontal support is many more, difficulty of construction below the horizontal support big more (and the base ring beam at the bottom of the semi-inverse method construction elder generation construction pond has in fact just played the supporting role of bottom construction after the construction of base ring beam is finished).
Summary of the invention
The object of the invention is to invent and a kind ofly can overcomes half reversed construction method above two kinds of job practices defectives, safe, efficient super-large diameter, super buried depth degree storage pond.
Space enclosing structure of the present invention adopts the stake of SMW worker's method, and production order is pond top cover, epimere pool wall, pond base plate, hypomere pool wall.
The present invention has gathered the superior function of the suitable practice and contrary sequence method, also overcome two kinds of methods defective separately simultaneously, through tentative, the present invention not only can realize the safety of storage pond engineering, deformation displacement is controlled under the surrounding enviroment of complexity, has also saved the expense of supporting and protection structure simultaneously.And the engineering process infiltration is few, and the duration, above two kinds of methods were all saved, and has the advantages that to save the labour, save engineering funds.The present invention is applicable to fully buried underground reinforced concrete sump body structure, the agent structure concrete self-waterproof, the contiguous soft foundation that river or rich groundwater are arranged, periphery closes on building, structure, critical facility (as operating subway etc.) and intensive all kinds of underground utilities and the environment very responsive to sedimentation and deformation.
The present invention is carrying out epimere pool wall when construction, with ring beam structure, castinplace pile and the steel lattice column of pond top cover as foundation pit support system.
Before back, the construction of pond base plate were finished in epimere pool wall construction, sequentially built steel work middle part was supported and the support of base ring beam.
The present invention with pond top cover ring beam structure, castinplace pile and steel lattice column as foundation pit support system, after treating that pond cap structure system forms, carry out the construction of epimere pool wall earlier, do the steel work middle part then and support, carry out the base ring beam at last and support construction (hypomere pool wall and part pond base plate).
The superiority that the present invention has is embodied in:
1, space enclosing structure adopts the stake of SMW worker's method, is precondition of the present invention, and this method speed of application is fast, and stagnant water effect is good, and expense is low.
2, under the situation that foundation ditch does not excavate, the steel in the pond body structure composite steel concrete column of constructing earlier is the structure post scrupulously and respectfully, as utilizing the vertical support that supports in the pond body lamina tecti replacement level.
3, utilize pond body lamina tecti structure, support in the level at reverse construction, replacement foundation ditch top, saved and supported the expense of constructing and removing in the level.
4, at the bottom of adverse construction method epimere pool wall, hypomere pool wall and the part pond, further reduce the distortion of fender post, guaranteed the safe excavation of middle cubsoil in the pond.
5, the semi-inverse method construction has guaranteed that SMW worker's method enclosure wall deformation displacement is little, i.e. foundation pit supporting construction maximum distortion displacement≤15mm, and the satisfied protection requirement that closes on subway and building.
Description of drawings
Fig. 1 is a kind of construction process figure of the present invention.
The specific embodiment
One, general thought:
Space enclosing structure adopts the stake of SMW worker's method, production order: pond top cover, epimere pool wall, pond base plate, hypomere pool wall.
Carrying out epimere pool wall when construction, with ring beam structure, castinplace pile and the steel lattice column of pond top cover as foundation pit support system.
After the construction of epimere pool wall is finished, before the construction of pond base plate, sequentially built steel work middle part is supported and the base ring beam supports.
Two, construction process:
See Fig. 1.
Three, main points of operation:
1, pond cap structure construction
At the bottom of soil excavation at the bottom of the cap structure of pond is brace summer, adopt brick barricade and concrete cushion topotype in the construction.
Pond lid structure is only constructed top cover center annular beam slab and emitting shape braced structures girder system and part pond top board earlier as the construction operation platform that is unearthed, and all the other ponds lid structure roof are stayed the construction hole as giving.Form of structure sees accompanying drawing one for details.
2, steel lattice column construction
All on body structure load-bearing pillar position, pond, insert when Structural Engineering stake (castinplace pile) construct simultaneously the lower end for steel lattice column location, and the upper end is fixed in the lid structural beams of pond, and the steel lattice column need not remove, and all pours into and substitute the part reinforcing bar in the permanent structure post.Require steel lattice column accurate positioning, vertical vertical in the construction.
3, the contrary epimere pool wall of doing is constructed
Around foundation pit walls, dig out the wide ring-type geosyncline of 3.5m earlier, former foundation pit earth adds the rubble compacting in the pool wall bottom, pouring concrete basis and basic stress reinforcing bar and H shaped steel welded again, the cracking in case pool wall malformation is sunk, treat to cut off when remove on the basis basic welded reinforcement on the H shaped steel, the smooth brushing anti-friction agent that polishes flat guarantees that fender post H shaped steel can pull out smoothly.
The single face side form of pool wall utilizes bottom welding lacing wire to be connected with steel pipe with the joint bar that top is reserved.
4, steel work encloses purlin and steel pipe support construction
During construction steel is enclosed the support of purlin and steel pipe and be divided into the even number section, every section steel encloses 2 steel pipes supports in the purlin, two sections supports (totally 4 supports) by symmetry form one group again, and utilize space enclosing structure H steel welding triangle bracket to shelve a little as enclosing purlin, key is to be the unit with the group, dug one group of earthwork and finished one group of support rapidly, symmetry applies axial stress simultaneously, accomplishes symmetry, continuous, rapid construction.See accompanying drawing two.
5, base ring beam construction
The storage pond base plate is the bottom of a pan shape, and it is motionless to keep the center soil body in the construction, only excavates the foundation ditch earthwork all around.Wide base plate of pot oral area 3.5m and hypomere pool wall primary concreting form the support of base ring beam at the bottom of the storage pond.The pool wall mounted split pattern support to be to utilize steel work to enclose purlin to give that the vertical support of burying fixes, prevent the template deformation displacement.
6, soil excavation
Soil excavation should be according to the requirement of shoveling flow chart, and layer and section is determined the methods of soil excavation, and Chi Ding adopts an extension arm digging machine, adopts 1 digging machine to cut the earth in the foundation ditch, and 1 digging machine turns over fortune transmission.
The shoveling flow process:
6,1 adopt for the first time the open flume type earth excavation at the bottom of the brace summer
6,2 adopt around in the foundation ditch for the second time island formula earth excavation to contrary make pool wall at the bottom of
6, central island and the benzvalene form excavation that combines is adopted in the 3 foundation ditch core earthwork for the third time, is convenient to center support and constructs
6,4 the 4th soil excavations are the pond periphery soil body, adopt open flume type shoveling mode, by the requirement of steel support construction technology, accomplish segmentation, symmetry excavation
6,5 the 5th soil excavations adopt the island formula to dig to pond base plate absolute altitude around foundation ditch again, require layering, balance, quick
6, adopt for 6 the 6th times central island to cut the earth and the benzvalene form mode is excavated center, the bottom of a pan and pump is cheated all cubic metres of earth.
7, the reinforcing bar of semi-inverse method constuction joint connects and the antiseepage processing
Vertical main muscle connection has adopted novel construction process SA level rolling straight thread connector to connect, and reaches the equal strength total cross-section and uses.The horizontal construction joint that epimere pool wall reverse construction produces is handled: adopted bell-mouthed feeding manner in the construction, and required the concreting face of construction sealing to exceed more than the constuction joint 200mm, to guarantee constuction joint concrete joint face certain lateral pressure has been arranged; The SM water-swellable fluid sealant that has adopted import simultaneously is as sealing defence line, first road, the second road waterproof measure is to give at the pool wall middle part burying Grouting Pipe, after treating that concrete reaches certain intensity, cut the concrete horn mouth of protrusion earlier, adopt the high strength slurries to carry out mortar depositing construction again, obtain filling in the slit of constuction joint owing to the generation of reasons such as contraction thereby make between the new-old concrete, accomplished the leakproof phenomenon.
Claims (3)
1, half reversed construction method of super-large diameter, super buried depth degree storage pond is characterized in that space enclosing structure adopts the stake of SMW worker's method, and production order is pond top cover, epimere pool wall, pond base plate, hypomere pool wall.
2, according to half reversed construction method of the described super-large diameter of claim 2, super buried depth degree storage pond, it is characterized in that carrying out epimere pool wall when construction, with ring beam structure, castinplace pile and the steel lattice column of pond top cover as foundation pit support system.
3,, it is characterized in that before back, the construction of pond base plate were finished in epimere pool wall construction, sequentially built steel work middle part was supported and the support of base ring beam according to half reversed construction method of the described super-large diameter of claim 2, super buried depth degree storage pond.
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| CNB2008101241442A CN100510281C (en) | 2008-06-25 | 2008-06-25 | Semi-inverse construction method of super large diameter, ultra-burial depth storage pond |
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| CNB2008101241442A CN100510281C (en) | 2008-06-25 | 2008-06-25 | Semi-inverse construction method of super large diameter, ultra-burial depth storage pond |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031785A (en) * | 2009-09-24 | 2011-04-27 | 上海市第一建筑有限公司 | Foundation pit supporting technique for replacing temporary enclosing purlin by using plate belt of permanent structure |
| CN102296616A (en) * | 2011-07-05 | 2011-12-28 | 中冶天工上海十三冶建设有限公司 | Semi-underground retaining and protecting method for constructing cylindrical underground tank |
| CN102561402A (en) * | 2010-12-22 | 2012-07-11 | 中国二十冶集团有限公司 | Treatment method for construction joint between top plate and wall of individual underground civil air defense project constructed by covered top-down excavation method |
| CN102704495A (en) * | 2012-07-02 | 2012-10-03 | 上海建工集团股份有限公司 | Island-basin combination excavation method for consequent operation of a major-diameter round no-inner support deep foundation pit |
| CN101929343B (en) * | 2009-09-21 | 2013-03-13 | 中铁隧道集团二处有限公司 | Profile steel pulling and grouting method of SMW (Soil Mixing Wall) process |
| CN107675928A (en) * | 2017-07-26 | 2018-02-09 | 喻天宝 | Well formula underground parking garage |
| CN108149922A (en) * | 2017-12-29 | 2018-06-12 | 上海市机械施工集团有限公司 | It is a kind of suitable for reverse construction structure roof without row's template construction method |
| CN113266017A (en) * | 2021-06-15 | 2021-08-17 | 中铁四局集团第一工程有限公司 | Regulation and storage tank construction method based on 'permanent-face integrated' inner support structure of deep foundation pit |
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| CN110939303B (en) * | 2019-11-22 | 2021-03-26 | 上海宝冶集团有限公司 | Semi-reverse construction method of cyclone pool |
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2008
- 2008-06-25 CN CNB2008101241442A patent/CN100510281C/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929343B (en) * | 2009-09-21 | 2013-03-13 | 中铁隧道集团二处有限公司 | Profile steel pulling and grouting method of SMW (Soil Mixing Wall) process |
| CN102031785A (en) * | 2009-09-24 | 2011-04-27 | 上海市第一建筑有限公司 | Foundation pit supporting technique for replacing temporary enclosing purlin by using plate belt of permanent structure |
| CN102561402A (en) * | 2010-12-22 | 2012-07-11 | 中国二十冶集团有限公司 | Treatment method for construction joint between top plate and wall of individual underground civil air defense project constructed by covered top-down excavation method |
| CN102561402B (en) * | 2010-12-22 | 2014-06-25 | 中国二十冶集团有限公司 | Treatment method for construction joint between top plate and wall of individual underground civil air defense project constructed by covered top-down excavation method |
| CN102296616A (en) * | 2011-07-05 | 2011-12-28 | 中冶天工上海十三冶建设有限公司 | Semi-underground retaining and protecting method for constructing cylindrical underground tank |
| CN102704495A (en) * | 2012-07-02 | 2012-10-03 | 上海建工集团股份有限公司 | Island-basin combination excavation method for consequent operation of a major-diameter round no-inner support deep foundation pit |
| CN107675928A (en) * | 2017-07-26 | 2018-02-09 | 喻天宝 | Well formula underground parking garage |
| CN108149922A (en) * | 2017-12-29 | 2018-06-12 | 上海市机械施工集团有限公司 | It is a kind of suitable for reverse construction structure roof without row's template construction method |
| CN113266017A (en) * | 2021-06-15 | 2021-08-17 | 中铁四局集团第一工程有限公司 | Regulation and storage tank construction method based on 'permanent-face integrated' inner support structure of deep foundation pit |
| CN113266017B (en) * | 2021-06-15 | 2022-05-17 | 中铁四局集团第一工程有限公司 | Regulation and storage tank construction method based on 'permanent-face integrated' inner support structure of deep foundation pit |
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| CN100510281C (en) | 2009-07-08 |
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