CN105862873A - Construction method of underground water prevention and exterior wall structures of narrow space of deep foundation pit - Google Patents
Construction method of underground water prevention and exterior wall structures of narrow space of deep foundation pit Download PDFInfo
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- CN105862873A CN105862873A CN201610226325.0A CN201610226325A CN105862873A CN 105862873 A CN105862873 A CN 105862873A CN 201610226325 A CN201610226325 A CN 201610226325A CN 105862873 A CN105862873 A CN 105862873A
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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
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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Abstract
The invention provides a construction method of underground water prevention and exterior wall structures of narrow space of a deep foundation pit. The construction method is used for a construction project of a deep foundation pit with narrow space in an urban center, concrete of a reserved trough is poured by single-side formworks arranged outside slope protection piles, a water prevention construction operation surface with outside prevention and inside attachment is formed, and meanwhile, the problem of backfilling of the reserved trough is solved; then construction of an exterior wall structure is carried out by the single-side formworks again; the problem that construction of exterior water prevention of the exterior wall, soil backfilling of the reserved trough, underground water prevention rolls and an underground structure exterior wall cannot be carried out due to insufficient space under the special condition is solved, water prevention construction of the exterior wall of a basement can be smoothly carried out effectively, and leakage is prevented. The construction method is clear in construction sequence and good in construction water prevention effect.
Description
Technical field
The present invention relates to deep basal pit underground waterproof and external wall structure construction field, a kind of deep basal pit underground waterproof under narrow space and external wall structure construction method.
Background technology
At present, under specific condition, the construction of small space deep basal pit underground waterproof mainly faces problems with:
(1), on the premise of the maximization of building area is pursued by construction unit, there is foundation ditch area and occupy the situation of on-the-spot available construction area more than 90% in downtown area and building compact district.This type of situation is usually associated with the existence of ultra-deep foundation pit, the construction deviation of slope protection pile and design and construction face is narrow and small makes underground external wall waterproof construction become the most difficult, slope protection pile constructed after traditionally the construction of Waterproof Construction Technique advanced person behavior external wall structure carry out again existing during the technique of waterproof paving: waterproof construction personnel are unable to reach the problems such as operating surface carries out constructing, cannot set up waterproof operation shelf, waterproof construction quality should not ensure.
(2) construction technology, building solid wall between slope protection pile and outer wall of underground structure by laying bricks or stones solves some problems to a certain extent, but this method neither energy-conserving and environment-protective (solid brick has stepped in superseded material register) lost labor again (taking a lot of work when building by laying bricks or stones with plastering construction construction cost), most important one has a problem in that masonry panel exists certain risk as underground external wall one side template.
(3) even if, the backfilling working of fertile slot part is also a difficult point of later stage work after another problem underground external wall is waterproof and external wall structure has been constructed; first the selection of backfilling material; according to traditional 2:8 dirt; backfill leakiness backfill quality is unreliable; the waterproof effect one of constructional waterproofing (the 2:8 dirt still belong to) the most in a disguised form reducing exterior wall is directly toppled over according to sand; backfill according to normal concrete; owing to pouring excessive height; likely fish tail and waterproof layer or masonry panel are damaged, and then waterproof generation is destroyed.
(4) if being considered as concrete and fertile groove being backfilled in advance, then it is considered as fertile groove concrete one side formwork and installs problem, how to ensure that the flatness of fill concrete surface layer and perpendicularity are this emphasis constructed.
Therefore, a kind of can solve deep basal pit in owing to insufficient space cannot be carried out the problem of external wall waterproof construction, to be solved structure outer formwork construction problem is presently required, needs also exist for solving the method for the problem of backfill in fertile groove.
Summary of the invention
The present invention provides a kind of deep basal pit narrow space underground waterproof and external wall structure construction method, constructing operation inconvenience, waste material and the technical problem artificial, that waterproof quality is the best that small space deep basal pit underground waterproof to be solved and external wall structure construction exist, and fertile groove concrete topping flatness and perpendicularity it is difficult to ensure that technical problem.
The technical solution adopted for the present invention to solve the technical problems is:
This deep basal pit narrow space underground waterproof and external wall structure construction method, construction procedure is as follows:
Step one, first one side mould is installed outside the fertile groove between slope protection pile and structure outer, slope protection pile is upwards spaced punching from foundation ditch bottom surface, bar planting bolt it is implanted in hole, the most elongated at bar planting between slope protection pile angle steel is set, being welded to connect between angle steel and bar planting bolt, interval welding through-wall bolt on angle steel, the through-wall bolt other end is through little punching block and fixes；
Step 2, pours fertile groove concrete in the one side mould inboard installed；
Step 3, when every time fertile groove concrete construction completes height higher than this Rotating fields exterior wall, suspends fertile groove concrete construction, paving waterproof layer and fish tail and waterproof layer successively on fertile groove concrete；
Step 4, carries out this Rotating fields exterior wall and structure roof construction, and the construction of structure outer includes: structure outer reinforcing bar binding, structure outer one side formwork install and structure outer concreting；
Step 5, carries out the outer concrete of last layer slope protection pile and waterproof construction, goes round and begins again and successively construct.
Described step one, makes a call to first hole in slope protection pile at the 350mm of foundation ditch bottom surface, first hole is upwards spaced 650mm～750mm and makes a call to second hole.
Described step one, the bar planting bolt angle implanted in slope protection pile is 30 degree, and the bar planting degree of depth is 200mm～300mm, stretches out slope protection pile 200mm～400mm outside bar planting bolt.
Described step one, the horizontal spacing between through-wall bolt is 700mm～800mm, a length of 600mm～1000mm of through-wall bolt.
Described step one, the lap-joint between angle steel uses welding and the lap of splice not less than 100mm.
Described step 2, the thickness of fertile groove concrete is 500mm～700mm, pours height less than 1400mm every time.
Described step 2, should set up double operation shelf at bed course or floor during fertile groove concreting, operation shelf uses steel pipe and fastener to set up.
Described step 3, waterproof layer is waterproof roll, as the moistest in run into bank protection side slope, when not possessing SBS waterproof coiled material construction condition, selects polyethylene polypropylene fiber waterproof coiled material；Described fish tail and waterproof layer is extruded sheet.
Described step 4, structure outer one side formwork is the unilateral steel joist wooden model strip triangular form support of sizing.
Described step 4, until agent structure intensity meet design require time, remove the prestressed anchor in this layer of slope protection pile and girder steel.
The feature of the present invention and having the beneficial effect that:
The present invention is directed to the project under construction of downtown area narrow field deep basal pit, successively use the mode of twice single side formwork.First single side formwork carries out fertile groove concrete construction; create the outer water-proof sticking basic unit of underground external wall simultaneously; solve waterproof and fish tail and waterproof layer construction no operatton space problem; carry out the construction of the outer wall of underground structure such as the reinforcing bar binding of vertical structure, single side formwork, concreting the most again, preferably solve that deep basal pit small space underground external wall is waterproof, structure construction operation and the problem of exterior wall fertilizer groove backfill construction simultaneously.
Waterproof layer of the present invention and the paving of fish tail and waterproof layer; being different from traditional external wall waterproof paving construction face is the mode outside structure outer; waterproof layer and fish tail and waterproof layer are pasted onto on fertile groove concrete by the present invention; fish tail and waterproof layer is constructed inside waterproof roll, is used for protecting waterproof roll to destroy when not constructed by exterior wall reinforcing bar binding.
Compared with prior art, this construction method it is a technical advantage that:
1, this construction method can ensure the operability of deep basal pit small space waterproof construction simultaneously, fertile groove backfill problem in the case of solving again this, it is applied to the waterproof construction in deep basal pit small space and external wall structure construction, can preferably ensure the construction quality of external wall waterproof coiled material, further strengthen underground external wall integral waterproofing effect.
2, whole construction method construction orderliness understands, construction procedure is clear and definite, application surface is relatively wide, and relatively conventional settling mode can be saved manually, improves efficiency of construction, reduce cost, obtains good waterproof construction effect simultaneously.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the use condition schematic diagram of the present invention.
Fig. 2 is the top view of fertilizer groove concrete support of the present invention construction.
Fig. 3 is the elevation of fertilizer groove concrete support of the present invention construction.
Fig. 4 is the side view of fertilizer groove concrete support of the present invention construction.
Fig. 5 is that the present invention pastes waterproof layer and the schematic diagram of fish tail and waterproof layer on fertile groove concrete.
Fig. 6 is the schematic diagram carrying out structure outer single side formwork after invention waterproof and protective layer construction.
Reference: 1-slope protection pile, 2-prestressed anchor and girder steel, 3-structure outer, 4-structure roof, 5-sole plate, the little punching block of 6-, 71-bar planting bolt, 72-through-wall bolt, 8-angle steel, 9-waterproof layer and fish tail and waterproof layer, 10-fertilizer groove, 11-fertilizer groove concrete, 12-structure outer one side formwork.
Detailed description of the invention
Embodiment sees shown in Fig. 1-6, this deep basal pit narrow space underground waterproof and external wall structure construction method, and construction procedure is as follows:
See shown in Fig. 1-4, outside step one, the first fertile groove 10 between slope protection pile 1 and structure outer 3, install one side mould.Slope protection pile 1 is made a call at the 350mm of foundation ditch bottom surface first hole, first hole is upwards spaced 700mm and makes a call to second hole.Be implanted into bar planting bolt 71 in hole, bar planting bolt 71 angle implanted in slope protection pile 1 is 30 degree, and the bar planting degree of depth is 200mm, stretches out slope protection pile 200mm～400mm outside bar planting bolt 71.Between slope protection pile 1, the most elongated angle steel 8 that arranges at bar planting, is welded to connect between angle steel 8 and bar planting bolt 71, and the lap-joint between angle steel 8 uses welding and the lap of splice not less than 100mm.Interval welding through-wall bolt 72 on angle steel 8, through-wall bolt 72 other end is through little punching block 6 and fixes.Horizontal spacing between through-wall bolt 72 is 750mm, a length of 600mm～1000mm of through-wall bolt.
Shown in Figure 5, step 2, fertile groove concrete 11 is poured in the one side mould inboard installed.Fertile groove concrete 11 can use C20 P8 concrete, and thickness is 600mm, pours height less than 1400mm every time.Fertile groove concrete 11 should set up double operation shelf at bed course or floor when pouring, operation shelf uses steel pipe and fastener to set up.
Shown in Figure 5, step 3, every time fertile groove concrete 11 construct height higher than this Rotating fields exterior wall 3 time, suspend fertile groove concrete construction, paving waterproof layer and fish tail and waterproof layer 9 successively on fertilizer groove concrete 11.The basic unit of waterproof layer should be firm, and basal plane should be clean, smooth, must not dusting, hollowing, loosening and decortication phenomenon.Waterproof layer should be firmly bonded, seal tight, overlap joint full size, surfacing, must not fold, alice and hollowing.Waterproof layer uses waterproof roll, as the moistest in run into bank protection side slope, when not possessing SBS waterproof coiled material construction condition, selects polyethylene polypropylene fiber waterproof coiled material.Described fish tail and waterproof layer uses extruded sheet.
Shown in Figure 6, step 4, carries out this Rotating fields exterior wall 3 and structure roof 4 is constructed, and the construction of structure outer 3 includes: structure outer reinforcing bar binding, structure outer one side formwork 12 install and structure outer concreting.Structure outer one side formwork 12 is the unilateral steel joist wooden model strip triangular form support of sizing.
Shown in Figure 1, until agent structure intensity meet design require time, remove the prestressed anchor in this layer of slope protection pile 1 and girder steel 2.Must not once remove two-layer and above prestressed anchor and girder steel.
See shown in Fig. 1-6, step 5, carry out the outer concrete of last layer slope protection pile and waterproof construction, go round and begin again and successively construct.
Claims (10)
1. a deep basal pit narrow space underground waterproof and external wall structure construction method, it is characterised in that construction procedure is as follows:
Step one, first fertile groove (10) outside between slope protection pile (1) and structure outer (3) installs one side mould, slope protection pile (1) is upwards spaced punching from foundation ditch bottom surface, bar planting bolt (71) it is implanted in hole, the most elongated at bar planting between slope protection pile (1) angle steel (8) is set, being welded to connect between angle steel (8) and bar planting bolt (71), upper interval welding through-wall bolt (72) of angle steel (8), through-wall bolt (72) other end is through little punching block (6) and fixes；
Step 2, pours fertile groove concrete (11) in the one side mould inboard installed；
Step 3, every time fertile groove concrete (11) construct height higher than this Rotating fields exterior wall (3) time, suspend fertile groove concrete construction, paving waterproof layer and fish tail and waterproof layer (9) successively on fertilizer groove concrete (11)；
Step 4, carries out this Rotating fields exterior wall (3) and structure roof (4) construction, and the construction of structure outer (3) including: structure outer reinforcing bar binding, structure outer one side formwork (12) install and structure outer concreting；
Step 5, carries out the outer concrete of last layer slope protection pile and waterproof construction, goes round and begins again and successively construct.
Deep basal pit narrow space underground waterproof the most according to claim 1 and external wall structure construction method, it is characterized in that: described step one, slope protection pile (1) is made a call at the 350mm of foundation ditch bottom surface first hole, first hole is upwards spaced 650mm～750mm and makes a call to second hole.
Deep basal pit narrow space underground waterproof the most according to claim 1 and external wall structure construction method, it is characterized in that: described step one, bar planting bolt (71) angle implanted in slope protection pile (1) is 30 degree, the bar planting degree of depth is 200～300mm, and slope protection pile 200mm～400mm are stretched out in bar planting bolt (71) outside.
Deep basal pit narrow space underground waterproof the most according to claim 1 and external wall structure construction method, it is characterised in that: described step one, the horizontal spacing between through-wall bolt (72) is 700mm～800mm, a length of 600mm～1000mm of through-wall bolt.
Deep basal pit narrow space underground waterproof the most according to claim 1 and external wall structure construction method, it is characterised in that: described step one, the lap-joint between angle steel (8) uses welding and the lap of splice not less than 100mm.
Deep basal pit narrow space underground waterproof the most according to claim 1 and external wall structure construction method, it is characterised in that: described step 2, the thickness of fertile groove concrete (11) is 500mm～700mm, pours height less than 1400mm every time.
Deep basal pit narrow space underground waterproof the most according to claim 1 and external wall structure construction method, it is characterized in that: described step 2, fertile groove concrete (11) should set up double operation shelf at bed course or floor when pouring, operation shelf uses steel pipe and fastener to set up.
Deep basal pit narrow space underground waterproof the most according to claim 1 and external wall structure construction method, it is characterized in that: described step 3, waterproof layer is waterproof roll, as the moistest in run into bank protection side slope, when not possessing SBS waterproof coiled material construction condition, select polyethylene polypropylene fiber waterproof coiled material；Described fish tail and waterproof layer is extruded sheet.
Deep basal pit narrow space underground waterproof the most according to claim 1 and external wall structure construction method, it is characterised in that: described step 4, structure outer one side formwork (12) is the unilateral steel joist wooden model strip triangular form support of sizing.
Deep basal pit narrow space underground waterproof the most according to claim 1 and external wall structure construction method, it is characterised in that: described step 4, until agent structure intensity meet design require time, remove the prestressed anchor in this layer of slope protection pile (1) and girder steel (2).
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592754A (en) * | 2016-12-27 | 2017-04-26 | 中建四局第五建筑工程有限公司 | Method for guaranteeing waterproof construction quality of deep foundation pit basement |
| CN106759843A (en) * | 2016-12-27 | 2017-05-31 | 宁波二十冶建设有限公司 | A kind of outer wall of basement waterproof construction and its construction method |
| CN107119695A (en) * | 2017-06-27 | 2017-09-01 | 中国建筑第二工程局有限公司 | A kind of operation support body and construction method for cancelling outer wall of basement backfill |
| CN107130631A (en) * | 2017-05-22 | 2017-09-05 | 中冶建工集团有限公司 | A kind of basement Retaining wall method based on concreting moulding wall |
| CN108411950A (en) * | 2018-03-28 | 2018-08-17 | 中铁十局集团第二工程有限公司 | A kind of underground waterproof construction method |
| CN109441099A (en) * | 2018-12-05 | 2019-03-08 | 中建局集团建设发展有限公司 | Basement single side formwork system and the method for utilizing its outer wall of basement of constructing |
| CN111608185A (en) * | 2020-04-28 | 2020-09-01 | 中国二十冶集团有限公司 | Waterproof construction method for main body structure of narrow space of deep foundation pit |
| CN112482555A (en) * | 2020-11-06 | 2021-03-12 | 云南建投第六建设有限公司 | Shear wall structure and construction method of shear wall |
| CN112962663A (en) * | 2021-01-07 | 2021-06-15 | 司顺生 | Construction method for narrow outer enclosure space of deep foundation |
| CN112982445A (en) * | 2021-02-24 | 2021-06-18 | 中建八局轨道交通建设有限公司 | Backfill method for common-structure fertilizer grooves of underground road with pipe gallery penetrating through underground |
| CN113622431A (en) * | 2021-08-02 | 2021-11-09 | 江苏东合南岩土科技股份有限公司 | Underground structure with foam light soil isolation wall and construction method thereof |
| CN113802722A (en) * | 2021-09-23 | 2021-12-17 | 武汉建工集团股份有限公司 | Construction method for recyclable deep foundation pit and outer wall integrated structure |
| CN113832986A (en) * | 2021-10-15 | 2021-12-24 | 中国二十二冶集团有限公司 | Waterproof construction method for underground outer wall in limited space in foundation pit supported by slope protection piles |
| CN115059290A (en) * | 2022-07-04 | 2022-09-16 | 中国建筑第二工程局有限公司 | Reverse construction method for underground outer wall of narrow fertilizer groove |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759843A (en) * | 2016-12-27 | 2017-05-31 | 宁波二十冶建设有限公司 | A kind of outer wall of basement waterproof construction and its construction method |
| CN106592754A (en) * | 2016-12-27 | 2017-04-26 | 中建四局第五建筑工程有限公司 | Method for guaranteeing waterproof construction quality of deep foundation pit basement |
| CN107130631A (en) * | 2017-05-22 | 2017-09-05 | 中冶建工集团有限公司 | A kind of basement Retaining wall method based on concreting moulding wall |
| CN107119695A (en) * | 2017-06-27 | 2017-09-01 | 中国建筑第二工程局有限公司 | A kind of operation support body and construction method for cancelling outer wall of basement backfill |
| CN108411950A (en) * | 2018-03-28 | 2018-08-17 | 中铁十局集团第二工程有限公司 | A kind of underground waterproof construction method |
| CN109441099B (en) * | 2018-12-05 | 2024-01-23 | 中建一局集团建设发展有限公司 | Basement unilateral formwork supporting system and method for constructing basement outer wall by utilizing same |
| CN109441099A (en) * | 2018-12-05 | 2019-03-08 | 中建局集团建设发展有限公司 | Basement single side formwork system and the method for utilizing its outer wall of basement of constructing |
| CN111608185A (en) * | 2020-04-28 | 2020-09-01 | 中国二十冶集团有限公司 | Waterproof construction method for main body structure of narrow space of deep foundation pit |
| CN112482555A (en) * | 2020-11-06 | 2021-03-12 | 云南建投第六建设有限公司 | Shear wall structure and construction method of shear wall |
| CN112962663A (en) * | 2021-01-07 | 2021-06-15 | 司顺生 | Construction method for narrow outer enclosure space of deep foundation |
| CN112982445A (en) * | 2021-02-24 | 2021-06-18 | 中建八局轨道交通建设有限公司 | Backfill method for common-structure fertilizer grooves of underground road with pipe gallery penetrating through underground |
| CN113622431A (en) * | 2021-08-02 | 2021-11-09 | 江苏东合南岩土科技股份有限公司 | Underground structure with foam light soil isolation wall and construction method thereof |
| CN113802722A (en) * | 2021-09-23 | 2021-12-17 | 武汉建工集团股份有限公司 | Construction method for recyclable deep foundation pit and outer wall integrated structure |
| CN113802722B (en) * | 2021-09-23 | 2022-09-06 | 武汉建工集团股份有限公司 | Construction method for recyclable deep foundation pit and outer wall integrated structure |
| CN113832986A (en) * | 2021-10-15 | 2021-12-24 | 中国二十二冶集团有限公司 | Waterproof construction method for underground outer wall in limited space in foundation pit supported by slope protection piles |
| CN115059290A (en) * | 2022-07-04 | 2022-09-16 | 中国建筑第二工程局有限公司 | Reverse construction method for underground outer wall of narrow fertilizer groove |
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