CN101487268A - Concrete basement structure with/without bonding prestress and its construction method - Google Patents
Concrete basement structure with/without bonding prestress and its construction method Download PDFInfo
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- CN101487268A CN101487268A CNA2009100782949A CN200910078294A CN101487268A CN 101487268 A CN101487268 A CN 101487268A CN A2009100782949 A CNA2009100782949 A CN A2009100782949A CN 200910078294 A CN200910078294 A CN 200910078294A CN 101487268 A CN101487268 A CN 101487268A
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Abstract
The invention discloses a bonded-unbonded pre-stress concrete basement structure and a corresponding construction method thereof. The construction method includes the floor-slab construction involving the steps of: separating a pile body from a soleplate, arranging a plastic plate sliding layer, applying the pre-stress; and carrying out waterproof treatment and integrating the pile body with the soleplate. The outer wall construction involving the steps of: arranging a sliding layer between the outer wall and the soleplate or the floor-slab; applying the pre-stress; carrying out the anti-corrosion treatment to the anchoring tools; carrying out the pressure grouting for the pre-embedded pipes with the bonded pre-stress and grouting the big or small pedestal foot of the outer wall of the basement after the pre-stress is applied to the outer wall of the basement. The basement structure is constructed according to the construction method and has the advantages that the load-carrying capability is better; the leakage can be avoided; the durability is strong and the earthquake resistance is good; in addition, the basement structure eliminates the temperature expansion joints, post-cast strips and expansion reinforced strips, completely avoids the leakage risk caused by the rubber waterproof strip and the like and the trouble caused by the management and maintenance, thus overcoming the various defects of the existing basement.
Description
Technical field
The invention belongs to building engineering field, particularly a kind ofly have, unbonded prestressed concrete basement structure and construction method thereof, it be utilize have, the prestressing without bondn post stretching is to the basement structure and the construction method of concrete constructions.
Background technology
Along with China's rapid economy development, the construction of building basement, underground parking is more and more.According to the present engineering structures method for designing of China, expose a lot of problems in the use.For example, by present " Code for design of concrete structures " GB50010-2002 of China, at different structure indoor or native in the requirement at one shrinkage joint just is set every 30-55m under the condition.For the bigger building of planar dimension, just must be divided into a lot of pieces, separate fully between these pieces, the middle connection with rubber fastening band carried out waterproof, traditional basement shrinkage joint way shown in Fig. 1 b, the Temperature Joint concrete at base plate, exterior wall and interior wall place disconnects fully, and the shrinkage joint width has 30～70mm approximately, be filled with flexible waterproof material 20 in the seam, the middle part is provided with rubber fastening band 30.The consequence of building with this scheme is that globality is poor, shock resistance and poor durability, and the parting place is easy to damage under seismic force effects, and the rubber fastening band place leaks easily, and long-time the use has problem of aging.
In addition, basement structure for the bigger building of planar dimension also has the ater-casting of employing or expansion reinforcing band to handle, conventional steel reinforced concrete basement shrinkage joint as shown in Figure 1a (or ater-casting, expansion reinforcing band) 10 layout schematic diagrames, for the ater-casting construction structure, after base plate, exterior wall and interior wall are in work progress and break a period of time, the fluid concrete of being expert at.Expansion reinforcing band and other concrete are together poured into a mould.The structure treatment effect of this class is general, has a lot of basements seepage to occur.
This shows that no matter the architectural plane size is big and little, the waterproof of present building basement structure generally adopts concrete self-waterproof and is coated with flexible waterproof material and solves outward.But in the basement that adopts the said method construction, have a lot of basements leakage problems to occur, the leakage problems of the basement that has can't solve, cause basement to duck in drink for a long time.
At these a series of problems new thinking has been proposed for personnel in the industry, through lot of experiments, proposed to adopt a kind ofly new have, Non-cohesive Prestressing Force Technology is to the integral constructing method of base plate, floor, exterior wall.According to different place statistics, have, the unbonded prestressed concrete basement saves cost and is approximately 9%-20% than traditional parting (or handle with ater-casting, expansion reinforcing band) basement, main is will thoroughly solve the leakage problems of basement with this method.We still do not have a design precedent at what this patent content was mentioned to now, have, unbonded prestressed concrete basement structure and construction method carried out the research of novelty, and a kind of new structure and construction method be provided.So-called unbonded prestressed concrete job practices is: prestressed reinforcement and plain bars are laid simultaneously, and then concreting, carry out the stretch-draw of prestressed reinforcement when concrete reaches certain intensity again, carry out the shutoff of ground tackle after stretch-draw is finished.So-called bonded prestress concrete construction method is: prestressed reinforcement is laid or penetrated to prestressed reinforcement and plain bars simultaneously before stretch-draw, but prestressed reinforcement will be placed in metal or the plastic pipe, and then concreting, when concrete reaches certain intensity, carry out the stretch-draw of prestressed reinforcement again, be in the milk after stretch-draw is finished, the ground tackle shutoff.
Summary of the invention
The objective of the invention is defective at above-mentioned prior art, provide a kind of and had, unbonded prestressed concrete basement structure and construction method thereof, use that the basement of this method and structure building has that shock resistance is good, good endurance and better leak resistance.
The technical scheme taked of the present invention is to achieve these goals: a kind ofly have, the construction method of unbonded prestressed concrete basement, operate according to following steps:
A) combine closely between pile body and the plain concrete cushion layer, and pile body and basement bottom board are thrown off;
B) the plastic plate sliding layer is set between plain concrete cushion layer and basement bottom board;
C) the basement bottom board level to both direction stretch-draw steel strand, apply prestressing force;
D) carry out waterproofing work between pile body and the basement bottom board, make pile body and basement bottom board form integral body then;
E) the plastic plate sliding layer is set between outer wall of basement and basement bottom board;
F) apply prestressing force in the outer wall of basement horizontal direction, also outer wall of basement is applied vertical prestressing during exterior wall height 〉=3 meter, the outer wall of basement level is arranged on the outer wall of basement to prestressing force pull end or anchored end, wherein, outer wall of basement and pillar are thrown off before exterior wall stretch-draw, and exterior wall and pillar link together after exterior wall stretch-draw;
G) ground tackle stretch-draw end and fixed end are carried out preservative treatment;
J) to adopting the concrete pre-pipe laying of bonded prestress to carry out pressure grouting;
K) outer wall of basement be applied in pour into a mould outer wall of basement behind the prestressing force again put pin for a short time, wherein, the also available pedestal foot in basement bottom board and outer wall of basement place, floor is general with putting pin for a short time with being connected of exterior wall; The pillar that connects mutually when outer wall of basement and its forms fixed end and then adopts pedestal foot, and the pillar that connects mutually when outer wall of basement and its forms hinged point and then adopts and put pin for a short time;
H) repeat above-mentioned steps c) and e)-k), and the basement bottom board in the described step replaced to the basement floor, to building complete basement; Wherein, the step e) of execution also is included in the step that the bearing that elastomeric material makes is set between outer wall of basement and the floor.
Described basement construction method, wherein, the flat shape of described outer wall of basement is rectangle or closed curve.
Described basement construction method, wherein, described outer wall of basement flat shape be closed curve, at described closed curve and straight wall line segment intersection counterfort is set.
Described basement construction method, wherein, described outer wall of basement level can also be arranged on the counterfort of outer wall of basement to prestressing force pull end or anchored end.
Described basement construction method, wherein, described floor be have, unbonded prestressed concrete constitutes or reinforced concrete flat slab floor constitutes beam and slab structure.
A kind of according to having, the basement structure that the construction method of unbonded prestressed concrete basement is made, described basement is at least one deck, comprise base plate, pillar, exterior wall and floor, wherein between base plate and the pile body, be equipped with the plastics sliding layer between exterior wall and the base plate and between exterior wall and the floor, also be provided with elastic cushion block between exterior wall and base plate or the floor, base plate, be provided with the horizontal direction prestress wire in floor and the exterior wall, the stretch-draw end or the anchored end of steel strand are arranged on the exterior wall, exterior wall and back plate connections are provided with greatly or put for a short time pin, and exterior wall and floor junction are provided with puts pin for a short time.
Described basement structure, wherein, the flat shape of described outer wall of basement is rectangle or closed curve.
Described basement structure, wherein, described outer wall of basement flat shape be closed curve, at described closed curve and straight wall line segment intersection counterfort is set.
Described basement structure, wherein, described outer wall of basement level can also be arranged on the counterfort of outer wall of basement to prestressing force pull end or anchored end.
Described basement structure, wherein, described floor be have, unbonded prestressed concrete constitutes or reinforced concrete flat slab floor constitutes beam and slab structure.
The invention has the beneficial effects as follows: compared to existing technology, according to the basement class formation that basement construction method of the present invention is built out, its stress performance is good, leakproof, and durability is strong, the advantage that anti-seismic performance is good; And described basement structure has been cancelled Temperature Joint, ater-casting or expansion reinforcing band, the trouble of leaking hidden danger and bringing for later management maintenance of thoroughly avoiding rubber fastening band etc. to cause, thus overcome all drawbacks of existing basement.
Have, the unbonded prestressed concrete basement structure, employed concrete grade is C20 or more than the C20, Concrete Crack Control is at 0～0.25mm in construction for this method, and the present concrete of basement crack of China generally is controlled at 0.1～0.25mm.
Description of drawings
Fig. 1 a is conventional steel reinforced concrete basement shrinkage joint, ater-casting or expansion reinforcing band layout schematic diagram;
Fig. 1 b is traditional basement shrinkage joint way schematic diagram;
Fig. 2 be of the present inventionly have, the schematic diagram of unbonded prestressed concrete basement structure;
Fig. 3 be of the present inventionly have, the sectional drawing of the fixed end of unbonded prestressed concrete basement structure;
Fig. 4 be of the present inventionly have, the sectional drawing of the hinged point of unbonded prestressed concrete basement structure;
Fig. 5 be of the present inventionly have, the floor map of unbonded prestressed concrete basement structure.
Among the figure: 10 shrinkage joint, ater-casting or expansion reinforcing band, 20 are that flexible waterproof material, 30 is rubber fastening band;
1 sliding layer, 2 horizontal direction prestress wires, 3 vertical direction prestress wires, 4 base plates, 5 floors, 6 exterior walls, 7 pedestal foots, 8 are put pin, 9 counterforts, 11 pile foundations, 12 pillars, 13 beams, 14 elastic cushion blocks for a short time.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
A kind ofly have, the construction method of unbonded prestressed concrete basement, operate according to following steps:
A) combine closely between pile body and the plain concrete cushion layer, and pile body and basement bottom board are thrown off; Adopt pile foundation when the ground bearing capacity can not satisfy, be married this moment between pile foundation and the bed course, but pile body and base plate are thrown off;
B) plastic plate sliding layer, the material that the preferred friction factor of plastic plate is little are set between plain concrete cushion layer and basement bottom board;
C) the basement bottom board level to both direction stretch-draw steel strand, apply prestressing force;
D) carry out waterproofing work between pile body and the basement bottom board, make pile body and basement bottom board form integral body then;
E) the plastic plate sliding layer is set between outer wall of basement and basement bottom board;
F) apply prestressing force in the outer wall of basement horizontal direction, also outer wall of basement is applied vertical prestressing during exterior wall height 〉=3 meter, the outer wall of basement level to the prestressing force pull end anchored end is arranged on the outer wall of basement or the counterfort of outer wall of basement on, wherein, the flat shape of described outer wall of basement is rectangle or closed curve.When described outer wall of basement flat shape be closed curve, at described closed curve and straight wall line segment intersection counterfort is set.Outer wall of basement and pillar are thrown off before exterior wall stretch-draw, and exterior wall and pillar link together after exterior wall stretch-draw;
G) ground tackle stretch-draw end and fixed end are carried out preservative treatment;
J) to adopting the concrete pre-pipe laying of bonded prestress to carry out pressure grouting;
K) outer wall of basement be applied in pour into a mould outer wall of basement behind the prestressing force again put pin for a short time, wherein, the also available pedestal foot in basement bottom board and outer wall of basement place, floor is general with putting pin for a short time with being connected of exterior wall; The pillar that connects mutually when outer wall of basement and its forms fixed end and then adopts pedestal foot, and the pillar that connects mutually when outer wall of basement and its forms hinged point and then adopts and put pin for a short time;
H) repeat above-mentioned steps c) and e)-k), and the basement bottom board in the described step replaced to the basement floor, to building complete basement; Wherein, the step e) of execution also is included in the step that the bearing that elastomeric material makes is set between outer wall of basement and the floor, elastic support preferred rubber bearing.
Described basement construction method, wherein, described floor be have, unbonded prestressed concrete constitutes or reinforced concrete flat slab floor constitutes beam and slab structure.
Having as shown in Figure 2, unbonded prestressed concrete basement structure are arranged on the pile foundation 11, are three layer construction, comprise base plate 4, pillar 12, exterior wall 6 and floor 5.Between the pile body of base plate 4 and pile foundation 11, between exterior wall 6 and the base plate 4 and be equipped with plastics sliding layer 1 between exterior wall 6 and the floor 5.Also be provided with elastic cushion block 14 between exterior wall 6 and base plate 4 or the floor 5, to form hinged point.Be equipped with horizontal direction prestress wire 2 in base plate 4, floor 5 and the exterior wall 6, highly 〉=3 also be provided with vertical direction prestress wire 3 in meter the exterior wall 6.The flat shape of outer wall of basement 6 is rectangle or closed curve.As shown in Figure 5, described outer wall of basement 6 flat shape be closed curve, wherein counterfort 9 can be set in fillet both sides and curvilinear motion place.The stretch-draw end of steel strand or anchored end are arranged on the exterior wall 6 or on the sustaining wall.Shown in Fig. 2-4, exterior wall 6 is provided with greatly or puts for a short time pin 8 with base plate 4 junctions.Exterior wall 6 is provided with floor 5 junctions and puts pin 8 for a short time.As shown in Figure 3, the pillar 12 that connects mutually when outer wall of basement 6 and its forms fixed end and then adopts pedestal foot 7.Shown in Fig. 2 and 4, the pillar 12 that connects mutually when outer wall of basement 6 and its forms hinged point and then adopts and put pin 8 for a short time.Described floor 5 is arranged on the beam 13, and floor 5 is the beam and slab structure that has, unbonded prestressed concrete constitutes or reinforced concrete flat slab floor constitutes.
According to the basement class formation that basement construction method of the present invention is built out, its stress performance is good, leakproof, and durability is strong, the advantage that anti-seismic performance is good; And described basement structure has been cancelled Temperature Joint, ater-casting or expansion reinforcing band, the trouble of leaking hidden danger and bringing for later management maintenance of thoroughly avoiding rubber fastening band etc. to cause, thus overcome all drawbacks of existing basement.
Above-described embodiment, the present invention specific embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacing all should be included in protection scope of the present invention.
Claims (10)
- One kind have, the construction method of unbonded prestressed concrete basement, it is characterized in that: operate according to following steps:A) combine closely between pile body and the plain concrete cushion layer, and pile body and basement bottom board are thrown off;B) the plastic plate sliding layer is set between plain concrete cushion layer and basement bottom board;C) the basement bottom board level to both direction stretch-draw steel strand, apply prestressing force;D) carry out waterproofing work between pile body and the basement bottom board, make pile body and basement bottom board form integral body then;E) the plastic plate sliding layer is set between outer wall of basement and basement bottom board;F) apply prestressing force in the outer wall of basement horizontal direction, also outer wall of basement is applied vertical prestressing during exterior wall height 〉=3 meter, the outer wall of basement level is arranged on the outer wall of basement to prestressing force pull end or anchored end, wherein, outer wall of basement and pillar are thrown off before exterior wall stretch-draw, and exterior wall and pillar link together after exterior wall stretch-draw;G) ground tackle stretch-draw end and fixed end are carried out preservative treatment;J) to adopting the concrete pre-pipe laying of bonded prestress to carry out pressure grouting;K) outer wall of basement be applied in pour into a mould outer wall of basement behind the prestressing force again put pin for a short time, wherein, the also available pedestal foot in basement bottom board and outer wall of basement place, floor is general with putting pin for a short time with being connected of exterior wall; The pillar that connects mutually when outer wall of basement and its forms fixed end and then adopts pedestal foot, and the pillar that connects mutually when outer wall of basement and its forms hinged point and then adopts and put pin for a short time;H) repeat above-mentioned steps c) and e)-k), and the basement bottom board in the described step replaced to the basement floor, to building complete basement; Wherein, the step e) of execution also is included in the step that the bearing that elastomeric material makes is set between outer wall of basement and the floor.
- 2. according to claim 1ly have, the construction method of unbonded prestressed concrete basement, it is characterized in that: the flat shape of described outer wall of basement is rectangle or closed curve.
- 3. according to claim 2ly have, the construction method of unbonded prestressed concrete basement, it is characterized in that: described outer wall of basement flat shape be closed curve, at described closed curve and straight wall line segment intersection counterfort is set.
- 4. according to claim 3ly have, the construction method of unbonded prestressed concrete basement, it is characterized in that: described outer wall of basement level can also be arranged on the counterfort of outer wall of basement to prestressing force pull end or anchored end.
- According to the arbitrary claim of claim 1-4 describedly have, the construction method of unbonded prestressed concrete basement, it is characterized in that: described floor be have, unbonded prestressed concrete constitutes or reinforced concrete flat slab floor constitutes beam and slab structure.
- 6. the basement structure that construction method according to claim 1 is made, it is characterized in that: described basement is at least one deck, comprise base plate, pillar, exterior wall and floor, wherein between base plate and the pile body, be equipped with the plastics sliding layer between exterior wall and the base plate and between exterior wall and the floor, also be provided with elastic cushion block between exterior wall and base plate or the floor, base plate, be provided with the horizontal direction prestress wire in floor and the exterior wall, the stretch-draw end or the anchored end of steel strand are arranged on the exterior wall, exterior wall and back plate connections are provided with greatly or put for a short time pin, and exterior wall and floor junction are provided with puts pin for a short time.
- 7. basement structure according to claim 6 is characterized in that: the flat shape of described outer wall of basement is rectangle or closed curve.
- 8. basement structure according to claim 7 is characterized in that: described outer wall of basement flat shape be closed curve, at described closed curve and straight wall line segment intersection counterfort is set.
- 9. basement structure according to claim 8 is characterized in that: described outer wall of basement level can also be arranged on the counterfort of outer wall of basement to prestressing force pull end or anchored end.
- 10. according to the described basement structure of the arbitrary claim of claim 6-9, it is characterized in that: described floor be have, unbonded prestressed concrete constitutes or reinforced concrete flat slab floor constitutes beam and slab structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100782949A CN101487268A (en) | 2009-02-24 | 2009-02-24 | Concrete basement structure with/without bonding prestress and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100782949A CN101487268A (en) | 2009-02-24 | 2009-02-24 | Concrete basement structure with/without bonding prestress and its construction method |
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| CN101487268A true CN101487268A (en) | 2009-07-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314103A (en) * | 2014-05-26 | 2015-01-28 | 江苏开来预应力工程有限公司 | Method for designing and constructing waterproof plate for underground garage by post-tensioning bonded prestressed construction process |
| CN106351343A (en) * | 2016-11-10 | 2017-01-25 | 成都市第八建筑工程公司 | Basement outer wall waterproof protection structure capable of realizing synchronous crossing construction and construction method thereof |
| CN106400985A (en) * | 2016-11-10 | 2017-02-15 | 成都市第八建筑工程公司 | Basement outer wall waterproof protection structure and construction method |
| CN107190849A (en) * | 2017-06-28 | 2017-09-22 | 中国华西企业股份有限公司 | The shear wall of floor prestressed stretch-draw effect of constraint value can be eliminated |
-
2009
- 2009-02-24 CN CNA2009100782949A patent/CN101487268A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314103A (en) * | 2014-05-26 | 2015-01-28 | 江苏开来预应力工程有限公司 | Method for designing and constructing waterproof plate for underground garage by post-tensioning bonded prestressed construction process |
| CN106351343A (en) * | 2016-11-10 | 2017-01-25 | 成都市第八建筑工程公司 | Basement outer wall waterproof protection structure capable of realizing synchronous crossing construction and construction method thereof |
| CN106400985A (en) * | 2016-11-10 | 2017-02-15 | 成都市第八建筑工程公司 | Basement outer wall waterproof protection structure and construction method |
| CN106400985B (en) * | 2016-11-10 | 2020-01-31 | 成都市第八建筑工程公司 | basement exterior wall waterproof protection structure and construction method |
| CN107190849A (en) * | 2017-06-28 | 2017-09-22 | 中国华西企业股份有限公司 | The shear wall of floor prestressed stretch-draw effect of constraint value can be eliminated |
| CN107190849B (en) * | 2017-06-28 | 2019-07-19 | 中国华西企业股份有限公司 | The shear wall of floor prestressed stretch-draw effect of constraint value can be eliminated |
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Open date: 20090722 |