CN201372441Y - Bonded and unbonded prestressed concrete basement structure - Google Patents
Bonded and unbonded prestressed concrete basement structure Download PDFInfo
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- CN201372441Y CN201372441Y CN200920105549U CN200920105549U CN201372441Y CN 201372441 Y CN201372441 Y CN 201372441Y CN 200920105549 U CN200920105549 U CN 200920105549U CN 200920105549 U CN200920105549 U CN 200920105549U CN 201372441 Y CN201372441 Y CN 201372441Y
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Abstract
The utility model provides a bonded and unbonded prestressed concrete basement structure, the basement is one layer at least and comprises a bottom plate, a pillar, an outer wall and a floor plate, wherein sliding layers are respectively arranged between the bottom plate and a pile body, between the outer wall and the bottom plate and between the outer wall and the floor plate, an elastic padding block is further arranged between the outer wall and the bottom plate or the floor plate, horizontal prestressed steel wire strands are arranged in the bottom plate, the floor plate and the outer wall, the tension ends or the anchor ends of the steel wire strands are arranged on the outer wall, a big spread footing or a small spread footing is arranged at the junction of the outer wall and the bottom plate, and the small spread footing is arranged at the junction of the outer wall and the floor plate. The basement structure has the advantages of good stress performance, no leakage, strong durability and good seismic performance, cancels a temperature stretch seam, a post pouring strip or an expansion reinforcing band, thoroughly avoids the hidden trouble of water leakage caused by a rubber watertight strip and the caused subsequent troubles in management and maintenance and further overcomes a variety of shortcomings of the prior basement.
Description
Technical field
The utility model belongs to building engineering field, particularly a kind ofly have, the unbonded prestressed concrete basement structure, it be utilize have, the prestressing without bondn post stretching is to the basement structure 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 " GB 50010-2002 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 purpose of this utility model is the defective at above-mentioned prior art, provides a kind of and has, the unbonded prestressed concrete basement structure, and this basement structure has that shock resistance is good, good endurance and better leak resistance.
The technical scheme taked of the utility model is to achieve these goals: a kind of have, the structure of unbonded prestressed concrete basement, 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 beneficial effects of the utility model are: compared to existing technology, basement structure described in the utility model, stress performance is good, leakproof, 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 described in the utility modelly have, the schematic diagram of unbonded prestressed concrete basement structure;
Fig. 3 be described in the utility modelly have, the sectional drawing of the fixed end of unbonded prestressed concrete basement structure;
Fig. 4 be described in the utility modelly have, the sectional drawing of the hinged point of unbonded prestressed concrete basement structure;
Fig. 5 be described in the utility modelly 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 utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
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.
Make describedly have, the construction method of unbonded prestressed concrete basement structure, 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.
According to the basement class formation that described basement construction method 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 utility model specific embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.
Claims (5)
- One kind have, the unbonded prestressed concrete basement structure, 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, be provided with the horizontal direction prestress wire in base plate, 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.
- 2. basement structure according to claim 1 is characterized in that: the flat shape of described outer wall of basement is rectangle or closed curve.
- 3. basement structure according to claim 2 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. basement structure according to claim 3 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.
- 5. according to the described basement structure of the arbitrary claim of claim 1-4, it is characterized in that: described floor be have, unbonded prestressed concrete constitutes or reinforced concrete flat slab floor constitutes beam and slab structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920105549U CN201372441Y (en) | 2009-02-24 | 2009-02-24 | Bonded and unbonded prestressed concrete basement structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920105549U CN201372441Y (en) | 2009-02-24 | 2009-02-24 | Bonded and unbonded prestressed concrete basement structure |
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| CN201372441Y true CN201372441Y (en) | 2009-12-30 |
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| CN200920105549U Expired - Lifetime CN201372441Y (en) | 2009-02-24 | 2009-02-24 | Bonded and unbonded prestressed concrete basement structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535861A (en) * | 2011-12-29 | 2012-07-04 | 中国一冶集团有限公司 | Tensioning method for bonded and unbonded combination prestress concrete beams at post-cast strip |
| CN103104097A (en) * | 2012-12-17 | 2013-05-15 | 中国建筑第八工程局有限公司 | Recursive flowing water construction method of canceling temperature post-cast strip by overlength concrete base plate structure |
| CN104790550A (en) * | 2015-03-26 | 2015-07-22 | 河南五方合创建筑设计有限公司 | Seismic design method adopted when height difference exists between external expansion basement and main building |
| CN106049661A (en) * | 2016-05-30 | 2016-10-26 | 建研地基基础工程有限责任公司 | Non-column large-span repairable prestressed cable-arch combined structure of open-cut subway station |
| CN106121035A (en) * | 2016-08-12 | 2016-11-16 | 长沙远大住宅工业集团股份有限公司 | A kind of overlapping assembled integral basement of flat slab system |
-
2009
- 2009-02-24 CN CN200920105549U patent/CN201372441Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535861A (en) * | 2011-12-29 | 2012-07-04 | 中国一冶集团有限公司 | Tensioning method for bonded and unbonded combination prestress concrete beams at post-cast strip |
| CN102535861B (en) * | 2011-12-29 | 2014-09-17 | 中国一冶集团有限公司 | Tensioning method for bonded and unbonded combination prestress concrete beams at post-cast strip |
| CN103104097A (en) * | 2012-12-17 | 2013-05-15 | 中国建筑第八工程局有限公司 | Recursive flowing water construction method of canceling temperature post-cast strip by overlength concrete base plate structure |
| CN103104097B (en) * | 2012-12-17 | 2016-01-06 | 中国建筑第八工程局有限公司 | Ultra-long concrete base arrangement cancels the recursion cross construction method of temperature post-cast strip |
| CN104790550A (en) * | 2015-03-26 | 2015-07-22 | 河南五方合创建筑设计有限公司 | Seismic design method adopted when height difference exists between external expansion basement and main building |
| CN106049661A (en) * | 2016-05-30 | 2016-10-26 | 建研地基基础工程有限责任公司 | Non-column large-span repairable prestressed cable-arch combined structure of open-cut subway station |
| CN106049661B (en) * | 2016-05-30 | 2019-04-09 | 建研地基基础工程有限责任公司 | Open cut of subway station can repair prestressed cable-arch co-ordinative construction without column large span |
| CN106121035A (en) * | 2016-08-12 | 2016-11-16 | 长沙远大住宅工业集团股份有限公司 | A kind of overlapping assembled integral basement of flat slab system |
| WO2018028042A1 (en) * | 2016-08-12 | 2018-02-15 | 长沙远大住宅工业集团股份有限公司 | Overlaying assembly integral basement of beamless floor system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091230 |
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| CX01 | Expiry of patent term |