CN105862873B - Deep basal pit narrow space underground waterproof and external wall structure construction method - Google Patents

Deep basal pit narrow space underground waterproof and external wall structure construction method Download PDF

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Publication number
CN105862873B
CN105862873B CN201610226325.0A CN201610226325A CN105862873B CN 105862873 B CN105862873 B CN 105862873B CN 201610226325 A CN201610226325 A CN 201610226325A CN 105862873 B CN105862873 B CN 105862873B
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construction
waterproof
external
deep basal
basal pit
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CN105862873A (en
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陈达非
张文亮
刘滨
杨洋
耿春余
董曦
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Beijing Fourth Construction & Engineering Co Ltd
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Beijing Fourth Construction & Engineering Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls

Abstract

A kind of deep basal pit narrow space underground waterproof and external wall structure construction method, for the project under construction of downtown area narrow field deep basal pit, fertile groove concrete is poured using the outer single side formwork of slope protection pile first, form the waterproof construction scope of operation of outer anti-interior patch while also solve fertile groove backfill problem, then external wall structure construction is carried out using single side formwork again, solve at this in particular cases because insufficient space can not carry out waterproof outside exterior wall, fertile groove backfill, the problem of underground waterproof coiled material and outer wall of underground structure are constructed, it can effectively ensure that outer wall of basement waterproof construction smoothly deploys, prevent leakage scenarios.Sequence of construction of the present invention is clear, and construction waterproof works well.

Description

Deep basal pit narrow space underground waterproof and external wall structure construction method
Technical field
The present invention relates to deep basal pit underground waterproof and external wall structure construction field, particularly a kind of depth under narrow space Foundation ditch underground waterproof and external wall structure construction method.
Background technology
At present, the construction of small space deep basal pit underground waterproof mainly faces problems with specific condition:
(1), on the premise of the maximization of building area is pursued by construction unit, downtown area and building are intensive Area has that foundation ditch area occupies scene and can use construction area more than 90%.Such situation is usually associated with ultra-deep foundation pit In the presence of, the construction deviation of slope protection pile and design and construction face is narrow and small so that underground external wall waterproof construction becomes very difficult, slope protection pile Traditionally the advanced behavior external wall structure construction of Waterproof Construction Technique carries out existing during the technique of waterproof paving again after the completion of construction: Waterproof construction personnel are unable to reach operating surface and are constructed, can not set up waterproof operation shelf, waterproof construction quality and should not ensure Etc. problems.
(2), the construction technology of between slope protection pile and outer wall of underground structure building solid wall by laying bricks or stones solves to a certain extent Some problems, but the neither energy-conserving and environment-protective of this method(Solid brick has been stepped into superseded material register)People is wasted again Work(Build by laying bricks or stones time consuming with plastering construction construction), a most important problem is masonry panel as the side form of underground external wall one Certain risk be present in plate.
(3)Even if, another problem be exactly underground external wall waterproof and external wall structure construction after the completion of fertile slot part backfill Work and a difficult point of later stage work, the selection of backfilling material first, according to traditional 2:8 dirt, backfill leakiness It is unreliable to backfill quality, the waterproof effect for also in a disguised form reducing exterior wall is directly toppled over according to sand(2:8 dirt still belong to construct One kind of waterproof), backfilled according to normal concrete, due to pouring excessive height, it is possible to fish tail and waterproof layer or masonry wall Body damages, and then produces destruction to waterproof.
(4)If, be considered as concrete fertile groove backfilled in advance, be considered as fertile groove concrete one side formwork and install Problem, how to ensure the flatness of fill concrete surface layer and perpendicularity be this construction emphasis.
Therefore, a kind of can solve in deep basal pit because insufficient space can not carry out asking for external wall waterproof construction is needed at present Topic, will also solve the problems, such as structure outer formwork construction, the method for needing also exist for solving the problems, such as backfill in fertile groove.
The content of the invention
The present invention provides a kind of deep basal pit narrow space underground waterproof and external wall structure construction method, to solve small space Constructing operation inconvenience existing for deep basal pit underground waterproof and external wall structure construction, waste of materials and it is artificial, waterproof quality is bad Technical problem, 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 are as follows:
Step 1, one side mould is installed on the outside of the fertile groove first between slope protection pile and structure outer, from base in slope protection pile Hole bottom surface is spaced punching upwards, is implanted into bar planting bolt in hole, horizontal elongated setting angle steel at bar planting between slope protection pile, angle steel and It is welded to connect between bar planting bolt, interval welding through-wall bolt, the through-wall bolt other end pass through small punching block and fixation on angle steel;
Step 2, fertile groove concrete is poured in the one side mould inboard installed;
Step 3, when fertile groove concrete construction is completed highly to be higher than this Rotating fields exterior wall every time, suspend fertile groove coagulation soil application Work, paving waterproof layer and fish tail and waterproof layer successively on fertile groove concrete;
Step 4, carrying out this Rotating fields exterior wall and structure roof construction, the construction of structure outer includes:Structure outer reinforcing bar Colligation, structure outer one side formwork install and structure outer concreting;
Step 5, the outer concrete of last layer slope protection pile and waterproof construction are carried out, goes round and begins again and successively constructs.
The step 1, away from first hole is made a call at the 350mm of foundation ditch bottom surface in slope protection pile, it is spaced upwards by first hole Second hole is made a call at 650mm~750mm.
The step 1, the bar planting bolt angle being implanted into slope protection pile is 30 degree, and bar planting depth is 200mm~300mm, is planted Slope protection pile 200mm~400mm is stretched out on the outside of muscle bolt.
The step 1, the horizontal spacing between through-wall bolt are 700mm~800mm, through-wall bolt length be 600mm~ 1000mm。
The step 1, the lap-joint between angle steel are not less than 100mm using welding and the lap of splice.
The step 2, the thickness of fertile groove concrete is 500mm~700mm, pours height every time and is no more than 1400mm.
The step 2, double operation shelf should be set up during fertile groove concreting at bed course or floor, operate shelf Set up using steel pipe and fastener.
The step 3, waterproof layer are waterproof roll, and it is more moist such as to run into bank protection side slope, does not possess SBS waterproof rolls During execution conditions, from polyethylene polypropylene fiber waterproof coiled material;The fish tail and waterproof layer is extruded sheet.
The step 4, structure outer one side formwork are unilateral steel joist plank sheathing band triangular form support of shaping.
The step 4, when agent structure intensity meets design requirement, remove the prestressed anchor in this layer of slope protection pile And girder steel.
The features of the present invention and have the beneficial effect that:
The present invention is directed to the project under construction of downtown area narrow field deep basal pit, successively using the side of single side formwork twice Formula.Single side formwork carries out fertile groove concrete construction first, while creates the outer water-proof sticking basic unit of underground external wall, solves waterproof and prevents Water conservation layer is constructed no operatton space problem, then carries out the reinforcing bar colligation of vertical structure, single side formwork, concreting etc. again The construction of outer wall of underground structure, at the same preferably solve deep basal pit small space underground external wall waterproof, structure construction process and The problem of exterior wall fertilizer groove backfill construction.
The paving of waterproof layer and fish tail and waterproof layer of the present invention, it is in structure to be different from traditional external wall waterproof paving construction face Waterproof layer and fish tail and waterproof layer are pasted onto on fertile groove concrete by the mode on the outside of exterior wall, the present invention, and fish tail and waterproof layer construction exists Destroyed on the inside of waterproof roll, during for protecting waterproof roll not constructed by the colligation of exterior wall reinforcing bar.
Compared with prior art, this construction method it is a technical advantage that:
1st, the construction method can ensure the operability of deep basal pit small space waterproof construction simultaneously, solve this situation again Lower fertile groove backfill problem, constructs applied to the waterproof construction in deep basal pit small space and external wall structure, can preferably protect The construction quality of external wall waterproof coiled material is demonstrate,proved, further strengthens underground external wall integral waterproofing effect.
2nd, whole construction method construction orderliness understand, construction procedure clearly, wider, the relatively conventional settling mode of application surface Can save it is artificial, improve efficiency of construction, reduce cost, while obtain good waterproof construction effect.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the use condition schematic diagram of the present invention.
Fig. 2 is the top view of the fertile groove concrete support construction of the present invention.
Fig. 3 is the elevation of the fertile groove concrete support construction of the present invention.
Fig. 4 is the side view of the fertile groove concrete support construction of the present invention.
Fig. 5 is the schematic diagram that the present invention pastes waterproof layer and fish tail and waterproof layer on fertile groove concrete.
Fig. 6 is the schematic diagram of progress structure outer single side formwork after invention waterproof and protective layer construction.
Reference:1- slope protection piles, 2- prestressed anchors and girder steel, 3- structure outers, 4- structure roofs, 5- bases bottom The small punching block of plate, 6-, 71- bar plantings bolt, 72- through-wall bolts, 8- angle steel, 9- waterproof layers and fish tail and waterproof layer, 11- fertilizer groove coagulations Soil, 12- structure outer one side formworks.
Embodiment
Embodiment this deep basal pit narrow space underground waterproof and external wall structure construction method, is constructed referring to shown in Fig. 1-6 Step is as follows:
Referring to shown in Fig. 1-4, step 1, one side is installed on the outside of the fertile groove first between slope protection pile 1 and structure outer 3 Mould.Away from first hole is made a call at the 350mm of foundation ditch bottom surface in slope protection pile 1, being spaced 700mm upwards by first hole makes a call to second Hole.Bar planting bolt 71 is implanted into hole, the angle of bar planting bolt 71 being implanted into slope protection pile 1 is 30 degree, and bar planting depth is 200mm, Slope protection pile 200mm~400mm is stretched out in the outside of bar planting bolt 71.It is laterally elongated at bar planting between slope protection pile 1 that angle steel 8, angle steel 8 are set It is welded to connect between bar planting bolt 71, the lap-joint between angle steel 8 is not less than 100mm using welding and the lap of splice.At angle Welding through-wall bolt 72 in interval on steel 8, the other end of through-wall bolt 72 is through small punching block 6 and fixes.Horizontal stroke between through-wall bolt 72 It is 750mm to spacing, through-wall bolt length is 600mm~1000mm.
It is shown in Figure 5, step 2, fertile groove concrete 11 is poured in the one side mould inboard installed.Fertile groove concrete 11 C20 P8 concrete can be used, thickness 600mm, height is poured every time and is no more than 1400mm.Should when fertile groove concrete 11 pours Double operation shelf is set up at bed course or floor, operation shelf is set up using steel pipe and fastener.
It is shown in Figure 5, step 3, when the fertile construction of groove concrete 11 is completed highly to be higher than this Rotating fields exterior wall 3 every time, temporarily Stop fertile groove concrete construction, paving waterproof layer and fish tail and waterproof layer 9 successively on fertile groove concrete 11.The basic unit of waterproof layer should jail , must not dusting, hollowing, loosening and decortication phenomenon Gu basal plane should be clean, smooth.Waterproof layer should be firmly bonded, it is tight to seal, take Connect full size, surfacing, must not fold, alice and hollowing.Waterproof layer uses waterproof roll, and it is more damp such as to run into bank protection side slope It is wet, when not possessing SBS waterproof coiled material construction conditions, from polyethylene polypropylene fiber waterproof coiled material.The fish tail and waterproof layer uses extrusion molding Plate.
Shown in Figure 6, step 4, carries out this Rotating fields exterior wall 3 and structure roof 4 is constructed, the construction bag of structure outer 3 Include:The colligation of structure outer reinforcing bar, structure outer one side formwork 12 install and structure outer concreting.Structure outer one side mould Plate 12 is unilateral steel joist plank sheathing band triangular form support of shaping.
It is shown in Figure 1, when agent structure intensity meets design requirement, remove the prestressed anchor in this layer of slope protection pile 1 Bar and girder steel 2.Must not once it remove two layers and above prestressed anchor and girder steel.
Referring to shown in Fig. 1-6, step 5, the outer concrete of last layer slope protection pile and waterproof construction are carried out, is gone round and begun again successively Construction.

Claims (10)

1. a kind of deep basal pit narrow space underground waterproof and external wall structure construction method, it is characterised in that construction procedure is as follows:
Step 1, first in slope protection pile(1)And structure outer(3)Between fertile groove on the outside of install one side mould, in slope protection pile(1)On Punching is spaced upwards from foundation ditch bottom surface, and bar planting bolt is implanted into hole(71), slope protection pile(1)Between laterally elongated setting at bar planting Angle steel(8), angle steel(8)With bar planting bolt(71)Between be welded to connect, in angle steel(8)Upper interval welding through-wall bolt(72), wear Wall screw(72)The other end passes through small punching block(6)It is and fixed;
Step 2, fertile groove concrete is poured in the one side mould inboard installed(11);
Step 3, each fertile groove concrete(11)Construction completes height and is higher than this Rotating fields exterior wall(3)When, suspend fertile groove concrete Construction, in fertile groove concrete(11)On paving waterproof layer and fish tail and waterproof layer successively(9);
Step 4, carry out this Rotating fields exterior wall(3)And structure roof(4)Construction, structure outer(3)Construction include:Outside structure The colligation of wall reinforcing bar, structure outer one side formwork(12)Install and structure outer concreting;
Step 5, the outer concrete of last layer slope protection pile and waterproof construction are carried out, goes round and begins again and successively constructs.
2. deep basal pit narrow space underground waterproof according to claim 1 and external wall structure construction method, it is characterised in that: The step 1, in slope protection pile(1)On away from making a call to first hole at the 350mm of foundation ditch bottom surface, by first hole be spaced upwards 650mm~ Second hole is made a call at 750mm.
3. deep basal pit narrow space underground waterproof according to claim 1 and external wall structure construction method, it is characterised in that: The step 1, it is implanted into slope protection pile(1)Interior bar planting bolt(71)Angle is 30 degree, and bar planting depth is 200~300mm, bar planting Bolt(71)Slope protection pile 200mm~400mm is stretched out in outside.
4. deep basal pit narrow space underground waterproof according to claim 1 and external wall structure construction method, it is characterised in that: The step 1, through-wall bolt(72)Between horizontal spacing be 700mm~800mm, through-wall bolt length be 600mm~ 1000mm。
5. deep basal pit narrow space underground waterproof according to claim 1 and external wall structure construction method, it is characterised in that: The step 1, angle steel(8)Between lap-joint using welding and the lap of splice be not less than 100mm.
6. deep basal pit narrow space underground waterproof according to claim 1 and external wall structure construction method, it is characterised in that: The step 2, fertile groove concrete(11)Thickness be 500mm~700mm, pour every time height be no more than 1400mm.
7. deep basal pit narrow space underground waterproof according to claim 1 and external wall structure construction method, it is characterised in that: The step 2, fertile groove concrete(11)Double operation shelf should be set up when pouring at bed course or floor, operation shelf uses Steel pipe and fastener are set up.
8. deep basal pit narrow space underground waterproof according to claim 1 and external wall structure construction method, it is characterised in that: The step 3, waterproof layer are waterproof roll, and it is more moist such as to run into bank protection side slope, does not possess SBS waterproof coiled material construction conditions When, from polyethylene polypropylene fiber waterproof coiled material;The fish tail and waterproof layer is extruded sheet.
9. deep basal pit narrow space underground waterproof according to claim 1 and external wall structure construction method, it is characterised in that: The step 4, structure outer one side formwork(12)For unilateral steel joist plank sheathing band triangular form support of shaping.
10. deep basal pit narrow space underground waterproof according to claim 1 and external wall structure construction method, its feature exist In:The step 4, when agent structure intensity meets design requirement, remove this layer of slope protection pile(1)On prestressed anchor and Girder steel(2).
CN201610226325.0A 2016-04-13 2016-04-13 Deep basal pit narrow space underground waterproof and external wall structure construction method Active CN105862873B (en)

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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
CN107130631B (en) * 2017-05-22 2019-03-29 中冶建工集团有限公司 A kind of basement Retaining wall method based on concreting moulding wall
CN108411950B (en) * 2018-03-28 2020-11-10 中铁十一局集团第二工程有限公司 Underground waterproof construction method
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

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JPH11141126A (en) * 1997-11-05 1999-05-25 Fujita Corp Processing method of driving joining part in reversely driving method
CN103485365A (en) * 2013-09-16 2014-01-01 中冶天工上海十三冶建设有限公司 Installation method of underground concrete wall formwork of row pile supporting structure
CN204000936U (en) * 2014-08-28 2014-12-10 陕西建工第五建设集团有限公司 Outer wall of basement single surface formwork system based on fastener type steel pipe earth anchor truss
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