CN103233537A - Heavy-load superimposed overhead terrace and construction method - Google Patents

Heavy-load superimposed overhead terrace and construction method Download PDF

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Publication number
CN103233537A
CN103233537A CN2013101538040A CN201310153804A CN103233537A CN 103233537 A CN103233537 A CN 103233537A CN 2013101538040 A CN2013101538040 A CN 2013101538040A CN 201310153804 A CN201310153804 A CN 201310153804A CN 103233537 A CN103233537 A CN 103233537A
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terrace
concrete
stilts
built
superimposed
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CN2013101538040A
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CN103233537B (en
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杨峰
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杨众
杨峰
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Priority to CN201310153804.0A priority Critical patent/CN103233537B/en
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Abstract

A heavy-load superimposed overhead terrace comprises a pile, prestressed pre-cast beams and a composite floor and is characterized in that pre-tensioning prestressed steel strands are buried in the prestressed pre-cast beams disposed on the pile, and the composite floor is composed of a closed profiled steel sheet, a steel bar truss and a concrete combination. The prestressed overlapped beam is adopted so that steel bar consumption is greatly reduced and pond residue backfilling is omitted. The large-tonnage pile is adopted so that the number of the piles is greatly reduced and total manufacture cost is low.

Description

The superimposed built on stilts terrace of heavy load and job practices
Technical field
The present invention relates to building structure field, relate in particular to built on stilts terrace structure and the construction of soft clay area.
Background technology
Soft clay area causes the fixed ground that makes of silt soil to produce sedimentation because large tracts of land is filled out pool slag, the terrace depression has a strong impact on normal use, adopts the processing method of composite foundations such as agitation pile, piling prepressing, can not thoroughly solve settlement issues, then cost is high especially to adopt the pile foundation terrace, and construction is complicated.A kind ofly need not to fill out pool slag, and the built on stilts terrace that adopts the prestressing force superposed beam and exempt from the composite floor of formwork yet there are no report.
Summary of the invention
Technical problem to be solved by this invention is in the deficiency that overcomes above-mentioned prior art, and a kind of cost province, easy construction, the superimposed built on stilts terrace of fireballing heavy load and job practices are provided.
According to the superimposed built on stilts terrace of a kind of heavy load provided by the invention, comprise stake, prestressing force precast beam and composite floor, be embedded with the pretensioned prestressing steel strand in the described prestressing force precast beam, the prestressing force precast beam is held in the stake, and described composite floor is combined by the profiled sheet of remaining silent, steel bar girder and concrete.
Also have following attached technical characterictic according to the superimposed built on stilts terrace of a kind of heavy load provided by the invention:
Described stake is pile for prestressed pipe or tube-sinking cast-in-situ pile or bored pile.
Described prestressing force precast beam is embedded with stirrup, and stirrup exposes beam upper surface certain-length, and described stirrup is trapezoidal.
The concrete of described composite floor divides secondary to water to smash, and the steel bar girder bottom is embedded in waters earlier in the concrete layer, and top is embedded in the rear pouring concrete layer.
The middle part of described composite floor is embedded with some elongated reinforcing bars perpendicular to the rib of the profiled sheet of remaining silent.
According to the job practices of the superimposed built on stilts terrace of a kind of heavy load provided by the invention, construction according to the following steps:
A, play the terrace stake;
B, construction pile cover or grade beam;
C, precast prestressed beam are installed;
D, the shop profiled sheet of remaining silent are pricked muscle at the bottom of the plate;
E, water the first floor concrete and put steel bar girder simultaneously;
F, colligation surfacing steel bar;
G, water second layer concrete and surface layer.
Steel bar girder in the described step e is laid before watering the first floor concrete.
Compared with prior art have following advantage according to the superimposed built on stilts terrace of a kind of heavy load provided by the invention and job practices:
1, adopt the prestressing force superposed beam, amount of reinforcement significantly reduces, and has saved pool quarrel backfill, adopts the large-tonnage stake, and the stake number significantly reduces, and total cost is low.
2, slab form adopts the slim profiled sheet of remaining silent, and easy construction, speed are fast.
3, floor divides secondary to water to smash, and with steel bar girder as the old and new's concrete bonding surface shearing tendon, slab form working load when watering concrete is for the first time reduced, the profiled sheet of remaining silent is stressed to be reduced, and good integrity, surface construction is convenient.
Description of drawings
Fig. 1 is composition diagram of the present invention
Fig. 2 is cross section of the present invention and arrangement of reinforcement
Fig. 3 is precast beam stereogram of the present invention
Fig. 4 is the floor support plate stereogram of remaining silent of the present invention
Fig. 5 is steel bar girder stereogram of the present invention
The specific embodiment
Referring to Fig. 1 to Fig. 5, the superimposed built on stilts terrace 1 of a kind of heavy load that provides in the present invention comprises stake, prestressing force precast beam 2 and composite floor 3, be embedded with pretensioned prestressing steel strand 22 in the described prestressing force precast beam 2, prestressing force precast beam 2 is held in the stake 1, and described composite floor 3 is combined by the profiled sheet 31 of remaining silent, steel bar girder 32 and concrete 33.In soft clay area, bearing capacity of foundation soil is poor, for making the heavy load terrace not produce sedimentation, must drive piles, born the load of terrace by stake, the prestressing force precast beam is made in factory with pre-tensioning system, and adopt intensity far above the steel strand of plain bars as main muscle, amount of reinforcement significantly reduces, and beam deflection is little, and deck-molding can reduce, the prestressing force precast beam can directly be shelved in the stake, also can be shelved on the pile cover, also can be held in case of necessity on the grade beam that is coupled to the stake top, little because making somebody a mere figurehead the terrace headroom, be difficult to formwork and form removal, therefore adopt permanent profiled sheet as template, it is for fear of spillage that profiled sheet adopts closed type, and on the floor longitudinally steel bar girder be the old and new's concrete drawknot and surface of shear shearing resistance needs when dividing secondary to water to smash for the floor concrete.
Referring to Fig. 1, Fig. 2, in above-described embodiment that the present invention provides, described stake 1 is pile for prestressed pipe or tube-sinking cast-in-situ pile or bored pile, according to different areas and geological conditions, selects suitable stake type, but convenient construction reduces cost.
Referring to Fig. 1, Fig. 3, in above-described embodiment that the present invention provides, described prestressing force precast beam 2 is embedded with stirrup 21, stirrup 21 exposes beam upper surface certain-length, described stirrup 21 is trapezoidal, the precast beam stirrup exposes beam upper surface certain-length, imbed in the floor concrete, can make beam become superposed beam, increase the height of beam operational phase, increase bending resistance, stirrup is as the superposed surfaces shear reinforcement of the old and new's concrete bonding surface, improve the globality of superposed beam, and stirrup being made big trapezoidal of the little bottom in top, is to be held on shelving length on the beam in order to increase the profiled sheet of remaining silent.
Referring to Fig. 1, Fig. 2, in above-described embodiment that the present invention provides, 33 fens secondaries of the concrete of described composite floor 3 water to be smash, steel bar girder 32 bottoms are embedded in waters earlier in the concrete layer, top is embedded in the rear pouring concrete layer, floor divides secondary to water to smash, for the thickness of slab of the profiled sheet that reduces to remain silent with improve the construction quality of terrace surface layer, the first floor concrete waters when smashing, its all working load are born by the profiled sheet of remaining silent, the thickness of first floor concrete is more thin, profiled sheet stressed more little, and thickness just can be more thin, and second layer concrete waters when smashing, the working load on its top is mainly born by the steel bar concrete thin plate that waters that reaches certain intensity, and the continuity reinforcement(bar) truss also can share a part of load, and profiled sheet can not participate in work.Can reduce the permanent formwork cost greatly like this, steel bar girder winds up and lower edge is embedded in respectively in the old and new's concrete, can guarantee plate the old and new concrete in conjunction with closely, good integrity, and can be used as the support horse of surfacing steel bar, guarantee that reinforcement location is accurate.
Referring to Fig. 1, Fig. 2; in above-described embodiment that the present invention provides; the middle part of described composite floor 3 is embedded with some elongated reinforcing bars 34 perpendicular to the rib of the profiled sheet of remaining silent; laterally place elongated reinforcing bar in plate span centre portion; can make the plate bidirectional stress, though the topping of this reinforcing bar is bigger, the moment of flexure that can guarantee to be caused by the load that acts on the floor is to horizontal diffusion; make plate load enlarged areas, reduce equivalent uniform load.
Referring to Fig. 1, Fig. 2, in above-described embodiment that the present invention provides, steel bar girder in the described step e is laid before watering the first floor concrete, steel bar girder is after watering the first floor concrete but do not reach initial set and regularly place, can reduce concrete and water the difficulty of smashing, avoid concrete heap height and increase working load, can also avoid simultaneously exposing the bond stress that is bonded with cement paste on the steel bar girder of first floor concrete and reduces reinforcing bar and concrete, certainly water at the first floor concrete as steel bar girder and smash preceding placement, construction organization is convenient also little to quality influence.

Claims (7)

1. superimposed built on stilts terrace of heavy load, comprise stake, prestressing force precast beam and composite floor, it is characterized in that being embedded with the pretensioned prestressing steel strand in the described prestressing force precast beam, the prestressing force precast beam is held in the stake, and described composite floor is combined by the profiled sheet of remaining silent, steel bar girder and concrete.
2. as the superimposed built on stilts terrace of claims 1 described heavy load, it is characterized in that described stake is pile for prestressed pipe or tube-sinking cast-in-situ pile or bored pile.
3. as the superimposed built on stilts terrace of claims 1 described heavy load, it is characterized in that described prestressing force precast beam is embedded with stirrup, stirrup exposes beam upper surface certain-length, and described stirrup is trapezoidal.
4. as the superimposed built on stilts terrace of claims 1 described heavy load, the concrete that it is characterized in that described composite floor divides secondary to water to smash, and the steel bar girder bottom is embedded in waters earlier in the concrete layer, and top is embedded in the rear pouring concrete layer.
5. as the superimposed built on stilts terrace of claims 1 described heavy load, the middle part that it is characterized in that described composite floor is embedded with some elongated reinforcing bars perpendicular to the rib of the profiled sheet of remaining silent.
6. the job practices of the superimposed built on stilts terrace of heavy load may further comprise the steps:
A, play the terrace stake;
B, construction pile cover or grade beam;
C, precast prestressed beam are installed;
D, the shop profiled sheet of remaining silent are pricked muscle at the bottom of the plate;
E, water the first floor concrete and put steel bar girder simultaneously;
F, colligation surfacing steel bar;
G, water second layer concrete and surface layer.
7. as the job practices of the superimposed built on stilts terrace of claims 6 described heavy loads, it is characterized in that the steel bar girder in the described step e is laid before watering the first floor concrete.
CN201310153804.0A 2013-04-27 2013-04-27 Heavy load overlapping overhead terrace and construction method Active CN103233537B (en)

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CN103233537B CN103233537B (en) 2016-12-28

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103924612A (en) * 2014-04-22 2014-07-16 杨众 Soft soil foundation single-story workshop compensation foundation
CN105317039A (en) * 2014-06-26 2016-02-10 中国二十冶集团有限公司 Pile sinking method for controlling pile group floating
CN109113042A (en) * 2018-08-01 2019-01-01 五冶集团上海有限公司 Subgrade floor construction concrete overhead fetal membrane and construction method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10273918A (en) * 1997-03-31 1998-10-13 Yoshikazu Nishiyama Earthquake resistant bearing pile
KR20070052109A (en) * 2005-11-16 2007-05-21 금동성 Down-ward construction method of the underground slabs and retaining walls by the slim-type composit floor system consisted of the architectural conposit deep deck and unsymmetric h-beam without preliminary wall-attached support beams and sub-beams of the floor
CN101839033A (en) * 2010-06-22 2010-09-22 中国建筑第二工程局有限公司 Closed-section profiled steel sheet-concrete combined floor and construction method thereof
CN101871272A (en) * 2009-04-21 2010-10-27 朱乃盛 Building method of earthquake-resistant house and integral terrace house
CN102134907A (en) * 2010-12-31 2011-07-27 中铁二局股份有限公司 Construction method of steel bar truss floor support plate
CN102418402A (en) * 2010-09-28 2012-04-18 杨峰 Pre-tensioned prestressed reinforced concrete precast beam
CN102747741A (en) * 2012-07-12 2012-10-24 苏州工业园区设计研究院股份有限公司 Novel floor pile and pile cap connecting structure
CN102877582A (en) * 2012-10-16 2013-01-16 北京工业大学 Composite floor with steel bar trusses, profiled steel plate and regenerated concrete, and manufacturing method for composite floor
CN203270890U (en) * 2013-04-27 2013-11-06 杨众 Heavy-load superposed overhead terrace

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10273918A (en) * 1997-03-31 1998-10-13 Yoshikazu Nishiyama Earthquake resistant bearing pile
KR20070052109A (en) * 2005-11-16 2007-05-21 금동성 Down-ward construction method of the underground slabs and retaining walls by the slim-type composit floor system consisted of the architectural conposit deep deck and unsymmetric h-beam without preliminary wall-attached support beams and sub-beams of the floor
CN101871272A (en) * 2009-04-21 2010-10-27 朱乃盛 Building method of earthquake-resistant house and integral terrace house
CN101839033A (en) * 2010-06-22 2010-09-22 中国建筑第二工程局有限公司 Closed-section profiled steel sheet-concrete combined floor and construction method thereof
CN102418402A (en) * 2010-09-28 2012-04-18 杨峰 Pre-tensioned prestressed reinforced concrete precast beam
CN102134907A (en) * 2010-12-31 2011-07-27 中铁二局股份有限公司 Construction method of steel bar truss floor support plate
CN102747741A (en) * 2012-07-12 2012-10-24 苏州工业园区设计研究院股份有限公司 Novel floor pile and pile cap connecting structure
CN102877582A (en) * 2012-10-16 2013-01-16 北京工业大学 Composite floor with steel bar trusses, profiled steel plate and regenerated concrete, and manufacturing method for composite floor
CN203270890U (en) * 2013-04-27 2013-11-06 杨众 Heavy-load superposed overhead terrace

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103924612A (en) * 2014-04-22 2014-07-16 杨众 Soft soil foundation single-story workshop compensation foundation
CN105317039A (en) * 2014-06-26 2016-02-10 中国二十冶集团有限公司 Pile sinking method for controlling pile group floating
CN109113042A (en) * 2018-08-01 2019-01-01 五冶集团上海有限公司 Subgrade floor construction concrete overhead fetal membrane and construction method

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