CN202990170U - Shear wall structure collocating cross oblique internal prestress - Google Patents
Shear wall structure collocating cross oblique internal prestress Download PDFInfo
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- CN202990170U CN202990170U CN 201220666147 CN201220666147U CN202990170U CN 202990170 U CN202990170 U CN 202990170U CN 201220666147 CN201220666147 CN 201220666147 CN 201220666147 U CN201220666147 U CN 201220666147U CN 202990170 U CN202990170 U CN 202990170U
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Abstract
The utility model relates to a shear wall structure collocating cross oblique internal prestress. The shear wall structure comprises a shear wall body, shear-wall-body horizontal reinforcing bars and shear-wall-body vertical reinforcing bars, wherein shear-wall toothed plates are respectively arranged at the top left corner and the top right corner of the shear wall body, and prestressed tensioning end anchorages are arranged on the shear-wall toothed plates; prestressed anchoring end anchorages are respectively arranged at the bottom left corner and the bottom right corner of the shear wall body, and cross oblique prestressed steel beams and cross oblique prestressed pipes are arranged between the diagonal prestressed anchoring end anchorages and prestressed tensioning end anchorages; the cross oblique prestressed steel beams adopt high-strength prestressed steel tendons or steel strands, and the cross oblique prestressed pipes adopt metal bellows, iron sheet pipes or plastic bellows; and the prestressed anchoring end anchorages and the prestressed tensioning end anchorages adopt conical anchors, heading anchors or clamping piece anchors. The anti-seismic property of the shear wall is greatly increased.
Description
Technical field
The utility model relates to a kind of shear wall structure that configures the oblique prestressing with bond of intersection.
Background technology
Shear wall is the important component that bears vertical and horizontal loading in Concrete Structures of Tall Building, and its stress and mechanical property have directly determined supporting capacity and the structural safety of highrise building.Shear wall will produce along the principal tensile stress of Shear Walls body plane diagonal under the acting in conjunction of the horizontal loadings such as the vertical load such as dead load, Live Loads on Floors in Buildings and horizontal earthquake, wind load.Because the action direction of horizontal loading can change because of the variation of wind direction, horizontal earthquake direction, so two diagonals of principal tensile stress on wall body plane all may occur.And in existing Design of Shear-wall Structure method, shear wall inside only configures along the plain bars of wall body planar horizontal direction and vertical direction, horizontal reinforcement and vertically layout orientation and the principal tensile stress effect orientation of reinforcing bar is all inconsistent, and power transmission is not direct.The shear wall concrete very easily occurs along the diagonal crack of wall body plane diagonal under the principal tensile stress effect, and will occur along with the reciprocal variation of horizontal loads direction along the intersection diagonal crack of two diagonals in wall body plane and expansion gradually.The diagonal crack that intersects expands to the Stiffness Deterioration that to a certain degree will cause afterwards shear wall, causes the reduction of shear wall supporting capacity.Under the rarely occurred earthquake effect, diagonal crack widths increases rapidly, and sharply the intersection diagonal crack of expansion has not only seriously reduced the rigidity of shear wall, also can cause place, crack level and vertical reinforcement yielding, finally will cause shear wall to lose efficacy, badly influence the bearing safety of highrise building.For delaying appearance and the expansion of Shear Walls body concrete intersection diagonal crack, in existing shear walls design method, to the horizontal reinforcement in the Shear Walls body and vertically the equal strict regulations of reinforcing bar minimum steel ratio and maximum rebar spacing, although improved to a certain extent ductility and the anti-seismic performance of shear wall structure, but eventually can not overcome the puzzlement that larger principal tensile stress causes wall body cracking, and in the wall body, reinforcing bar is densely distributed, spacing is little, steel using amount is large, and the difficulty that can bring walls concrete to vibrate and construct.
The utility model content
The utility model provides a kind of shear wall structure that configures the oblique prestressing with bond of intersection, improves the anti-seismic performance of shear wall.
in order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of shear wall structure that configures the oblique prestressing with bond of intersection, comprise the Shear Walls body, be provided with Shear Walls body horizontal direction reinforcing bar and Shear Walls body vertical direction reinforcing bar in the Shear Walls body, the upper left corner of Shear Walls body and the upper right corner arrange respectively the shear wall tooth plate, shear wall tooth plate place is provided with prestressing force pull end ground tackle, the lower left corner of Shear Walls body and the lower right corner arrange respectively prestressed anchor fixed end ground tackle, be provided with between the prestressed anchor fixed end ground tackle at diagonal angle and prestressing force pull end ground tackle and intersect oblique prestressed strand and be arranged with the oblique prestress pipe of intersection outside the oblique prestressed strand of intersection, Shear Walls stature material is concrete, Shear Walls body horizontal direction reinforcing bar, Shear Walls body vertical direction reinforcing bar material are plain bars, the oblique prestressed strand that intersects adopts high-strength prestressed steel wire bundle or steel wire bundle, the oblique prestress pipe that intersects adopts metal bellows, conduit peschel or plastic film capicitor, and prestressed anchor fixed end ground tackle, prestressing force pull end ground tackle adopt anchoring cone, bulb-end anchorage or intermediate plate anchor.
The oblique prestress pipe that intersects is retained in Shear Walls body template, by with wall body horizontal direction reinforcing bar, wall body vertical direction reinforcing bar between colligation be connected and guarantee that its riding position is accurate.
The oblique prestressed strand lashing that intersects is positioned in the oblique prestress pipe of intersection.
Prestressed anchor fixed end ground tackle is retained in Shear Walls body template, is fixed on contiguous two corner positions in Shear Walls body bottom after shear wall concreting is completed.
The shear wall tooth plate is that the size of slotted eye is complementary with the prestressing force pull end ground tackle that adopts at the slotted eye of the contiguous two corner positions place's reservations in Shear Walls body top.
Prestressing force pull end ground tackle is placed in the shear wall tooth plate, completes until shear wall concreting and carries out prestressed stretch-draw when also maintenance is to stretch-draw intensity, adopts pea gravel concreten cementation of fissures sealing off and covering anchorage after prestressed stretch-draw is completed in the shear wall tooth plate.
The beneficial effects of the utility model are:
(1) principal tensile stress in the Shear Walls body plane that reaches vertically that the horizontal loading acting in conjunction causes is born by intersecting oblique prestressing with bond steel bundle, the principal tensile stress action direction is consistent with the oblique prestressing with bond Strands Layout direction of intersection, power transmission directly, succinctly, efficiently, greatly reduce the Shear Walls body and occur intersecting the possibility of diagonal crack along diagonal, improved the anti-side rigidity of shear wall;
(2) after the oblique prestressing with bond steel bundle of configuration intersection, shear wall changes the partial prestressing reinforced concrete structure into by ordinary reinforced concrete structure, this kind structure wall body concrete under lasting design situation and frequently occurred earthquake design situation does not ftracture, shear wall rigidity is not degenerated, the shear wall supporting capacity does not reduce, and can satisfy the every designing requirement of shear wall under serviceability limit state and ultimate limit states;
(3) under the rarely occurred earthquake design situation, permission wall body concrete the crack occurs but crack width is no more than prescribed limits, the degeneration within reason of shear wall rigidity, the reduction within reason of shear wall supporting capacity can be guaranteed the bearing safety of shear wall structure under the rarely occurred earthquake effect;
The method for stretching of (4) the oblique prestressing with bond steel Shu Caiyong one end anchoring of intersection, tensioned at one end, anchored end is positioned at contiguous two corner positions in wall body bottom, stretching end is positioned at contiguous two corner positions in wall body top, after stretch-draw is completed tooth plate is carried out the end sealing off and covering anchorage, the shear wall top is a plane, can proceed the construction of last layer shear wall;
(5) the oblique prestressed strand of intersection can adopt high-strength prestressed steel wire bundle, steel wire bundle, the oblique prestress pipe that intersects can adopt metal bellows, conduit peschel, plastic film capicitor, prestressed anchor fixed end ground tackle, prestressing force pull end ground tackle can adopt anchoring cone, bulb-end anchorage, intermediate plate anchor, above accessory is the typing specification product, and construction technology is ripe, construction technology is reliable, construction quality is easy to ensure;
(6) after the oblique prestressing with bond steel bundle of configuration intersection, the plain bars of alternative a part of wall body horizontal direction and vertical direction, can reduce reinforcement ratio, the increase plain bars bar spacing of plain bars, be convenient to the concrete construction of vibrating of wall body, be conducive to improve wall body concrete construction quality.
Description of drawings
Fig. 1 is front view of the present utility model;
Fig. 2 is top view of the present utility model;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the B-B sectional view of Fig. 1;
Fig. 5 is the C-C sectional view of Fig. 1.
The specific embodiment
embodiment: as shown in Fig. 1-5, a kind of shear wall structure that configures the oblique prestressing with bond of intersection, comprise Shear Walls body 1, be provided with Shear Walls body horizontal direction reinforcing bar 7 and Shear Walls body vertical direction reinforcing bar 8 in Shear Walls body 1, the upper left corner of Shear Walls body 1 and the upper right corner arrange respectively shear wall tooth plate 2, shear wall tooth plate 2 places are provided with prestressing force pull end ground tackle 6, the lower left corner of Shear Walls body 1 and the lower right corner arrange respectively prestressed anchor fixed end ground tackle 5, be provided with between the prestressed anchor fixed end ground tackle 5 at diagonal angle and prestressing force pull end ground tackle 6 and intersect oblique prestressed strand 4 and be arranged with and intersect oblique prestress pipe 3 intersecting oblique prestressed strand 4 outsides, Shear Walls body 1 material is concrete, Shear Walls body horizontal direction reinforcing bar 7, Shear Walls body vertical direction reinforcing bar 8 materials are plain bars, the oblique prestressed strand 4 that intersects adopts high-strength prestressed steel wire bundle or steel wire bundle, the oblique prestress pipe 3 that intersects adopts metal bellows, conduit peschel or plastic film capicitor, and prestressed anchor fixed end ground tackle 5, prestressing force pull end ground tackle 6 adopt anchoring cone, bulb-end anchorage or intermediate plate anchor.The oblique prestress pipe 3 that intersects is retained in Shear Walls body template, by with wall body horizontal direction reinforcing bar, wall body vertical direction reinforcing bar between colligation be connected and guarantee that its riding position is accurate.Prestressed anchor fixed end ground tackle 5 is retained in Shear Walls body template, is fixed on contiguous two corner positions in Shear Walls body 1 bottom after shear wall concreting is completed.Shear wall tooth plate 2 is that the size of slotted eye is complementary with the prestressing force pull end ground tackle 6 that adopts at the slotted eye of the contiguous two corner positions place's reservations in Shear Walls body 1 top.Prestressing force pull end ground tackle 6 is placed in the shear wall tooth plate, completes until shear wall concreting and carries out prestressed stretch-draw when also maintenance is to stretch-draw intensity, adopts pea gravel concreten cementation of fissures sealing off and covering anchorage after prestressed stretch-draw is completed in the shear wall tooth plate.
A kind of job practices that configures the shear wall structure of the oblique prestressing with bond of intersection comprises following construction sequence:
(1) set up shear wall formwork, colligation wall body plain bars
Set up the shear wall concrete blinding according to design size, comprise shear wall soffit formwork, side template, cheek board and shear wall tooth plate template, lay and colligation Shear Walls body plain bars, comprise wall body horizontal direction reinforcing bar, wall body vertical direction reinforcing bar, be provided with side column as this sheet shear wall, also should lay and colligation shear wall side column reinforcing bar;
(2) the oblique prestress pipe of intersection is arranged and is installed
Arrange the oblique prestress pipe of intersection along Shear Walls body diagonal, the oblique prestress pipe that intersects adopts metal bellows, conduit peschel or plastic film capicitor, diameter and designing requirement according to the design-calculated prestressed strand, select the prestress pipe of suitable diameter, prestress pipe should be connected with the colligation of wall body plain bars, guarantee the accurate positioning of pipeline, pipeline is installed and should be guaranteed that its inside is unimpeded, linear smooth-going, joint connects closely;
(3) prestressed strand lashing, prestressed anchor are installed
carry out the prestressed strand lashing in the oblique prestress pipe of intersection, the oblique prestressed strand that intersects adopts high-strength prestressed steel wire bundle or steel wire bundle, at the oblique prestressed strand of the intersection bottom in the lower left corner of Shear Walls body and lower right corner prestressed anchored end ground tackle, at the oblique prestressed strand of the intersection top in the upper left corner of Shear Walls body and upper right corner prestressed stretching end ground tackle, prestressed anchor fixed end ground tackle, prestressing force pull end ground tackle adopts anchoring cone, bulb-end anchorage or intermediate plate anchor, the necessary position of anchorage installation is accurate, fixed, anchor plate must be mutually vertical with prestressed strand,
(4) shear wall concreting and maintenance
Build the shear wall concrete according to design grade, adopt immersion vibrator to carry out concrete vibrating, guarantee concrete compaction, guarantee the closely knit of anchor plate surrounding concrete, adopt the placement layer by layer mode when Shear Walls body is higher, adopt corresponding maintenance scheme according to the construction environment temperature and humidity after the concreting moulding;
(5) prestressed stretch-draw, pipeline pneumatic mortar, end sealing off and covering anchorage
The shear wall concrete curing is to the intensity that meets designing requirement, can carry out prestressed stretch-draw after the length of time, the prestressing force type is prestressing with bond, the prestressing force drawing process is post stretching, pre-stress stretching method is tensioned at one end, select suitable tensioning equipment according to the design-calculated degree of prestressing, intersect the synchronous grading tension of oblique prestressed strand to designing control stress for prestressing, tensioner is put Zhang Houjin line pipe road mud jacking, anchoring is carried out in stretching end prestressed strand termination, adopt at last pea gravel concreten to carry out the end sealing off and covering anchorage to the tooth plate position.
The utility model is in the wall body of traditional common shear wall structure, two diagonals along wall body plane, each configures one group of prestressing with bond steel bundle, these two groups of prestressing with bond steel bundles are diagonal and intersect oblique layout orientation in wall body plane, can directly bear and transmit the principal tensile stress in vertical and wall body that the horizontal loading acting in conjunction causes.Intersect the existence of oblique prestressing with bond steel bundle, make shear wall change the partial prestressing reinforced concrete structure into by ordinary reinforced concrete structure, by applying suitable prestressing force, make wall body concrete be in all the time pressured state under lasting design situation and frequently occurred earthquake design situation, can guarantee that wall body concrete does not ftracture under wind load and fortification intensity geological process; Under the rarely occurred earthquake effect, because principal tensile stress is mainly born by the oblique prestressing with bond steel bundle of intersection, therefore even wall body concrete the crack occurs but crack width can not surpass the limit value of regulation, guarantee the degeneration within reason of shear wall rigidity thereby play, the effect of load-carrying properties reduction within reason has ensured the bearing safety of highrise building under the rarely occurred earthquake effect.Intersect the existence of oblique prestressing with bond steel bundle, also can reduce in the wall body horizontal reinforcement and the vertical reinforcement ratio of reinforcing bar, reduce the vibrate difficulty of construction of walls concrete, improved the construction quality of walls concrete.
Claims (5)
1. one kind configures and intersects the shear wall structure of oblique prestressing with bond, it is characterized in that: comprise the Shear Walls body, be provided with Shear Walls body horizontal direction reinforcing bar and Shear Walls body vertical direction reinforcing bar in the Shear Walls body, the upper left corner of Shear Walls body and the upper right corner arrange respectively the shear wall tooth plate, shear wall tooth plate place is provided with prestressing force pull end ground tackle, the lower left corner of Shear Walls body and the lower right corner arrange respectively prestressed anchor fixed end ground tackle, be provided with between the prestressed anchor fixed end ground tackle at diagonal angle and prestressing force pull end ground tackle and intersect oblique prestressed strand and be arranged with the oblique prestress pipe of intersection outside the oblique prestressed strand of intersection, Shear Walls stature material is concrete, Shear Walls body horizontal direction reinforcing bar, Shear Walls body vertical direction reinforcing bar material are plain bars, the oblique prestressed strand that intersects adopts high-strength prestressed steel wire bundle or steel wire bundle, the oblique prestress pipe that intersects adopts metal bellows, conduit peschel or plastic film capicitor, and prestressed anchor fixed end ground tackle, prestressing force pull end ground tackle adopt anchoring cone, bulb-end anchorage or intermediate plate anchor.
2. configuration according to claim 1 intersects the shear wall structure of oblique prestressing with bond, it is characterized in that: the oblique prestress pipe that intersects is retained in Shear Walls body template, by with wall body horizontal direction reinforcing bar, wall body vertical direction reinforcing bar between colligation be connected and guarantee that its riding position is accurate.
3. configuration according to claim 2 intersects the shear wall structure of oblique prestressing with bond, it is characterized in that: prestressed anchor fixed end ground tackle is retained in Shear Walls body template, is fixed on contiguous two corner positions in Shear Walls body bottom after shear wall concreting is completed.
4. according to claim 1-3 described configurations of any one intersect the shear wall structure of oblique prestressing with bond, it is characterized in that: the shear wall tooth plate is the slotted eye in the contiguous two corner positions place's reservations in Shear Walls body top, and the size of slotted eye is complementary with the prestressing force pull end ground tackle that adopts.
5. configuration according to claim 4 intersects the shear wall structure of oblique prestressing with bond, it is characterized in that: prestressing force pull end ground tackle is placed in the shear wall tooth plate, complete until shear wall concreting and carry out prestressed stretch-draw when also maintenance is to stretch-draw intensity, adopt pea gravel concreten cementation of fissures sealing off and covering anchorage after prestressed stretch-draw is completed in the shear wall tooth plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220666147 CN202990170U (en) | 2012-12-06 | 2012-12-06 | Shear wall structure collocating cross oblique internal prestress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220666147 CN202990170U (en) | 2012-12-06 | 2012-12-06 | Shear wall structure collocating cross oblique internal prestress |
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| CN202990170U true CN202990170U (en) | 2013-06-12 |
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| CN 201220666147 Withdrawn - After Issue CN202990170U (en) | 2012-12-06 | 2012-12-06 | Shear wall structure collocating cross oblique internal prestress |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979221A (en) * | 2012-12-06 | 2013-03-20 | 郑州大学 | Shear wall structure configured with crossed slant internal prestress and construction method of shear wall structure |
| CN103741842A (en) * | 2014-01-22 | 2014-04-23 | 天津大学建筑设计研究院 | Lightweight fabricated shear wall structure |
| CN104005494A (en) * | 2014-06-10 | 2014-08-27 | 东南大学 | Prefabricated shear wall dry-wet mixed vertical connecting joint structure |
| CN106930436A (en) * | 2017-04-26 | 2017-07-07 | 广西大学 | A kind of reinforced concrete shear wall of built-in prestress steel diagonal brace |
| CN106930437A (en) * | 2017-04-26 | 2017-07-07 | 广西大学 | A kind of reinforced concrete shear wall of built-in horizontal diagonal brace |
| CN109281410A (en) * | 2018-10-24 | 2019-01-29 | 江苏中南建筑产业集团有限责任公司 | A kind of connection structure and its construction method of precast wall body |
| WO2019205336A1 (en) * | 2018-04-28 | 2019-10-31 | 郑州大学 | Energy-dissipating reinforced concrete shear wall having recovery function and construction method therefor |
-
2012
- 2012-12-06 CN CN 201220666147 patent/CN202990170U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979221A (en) * | 2012-12-06 | 2013-03-20 | 郑州大学 | Shear wall structure configured with crossed slant internal prestress and construction method of shear wall structure |
| CN102979221B (en) * | 2012-12-06 | 2015-03-25 | 郑州大学 | Shear wall structure configured with crossed slant internal prestress and construction method of shear wall structure |
| CN103741842A (en) * | 2014-01-22 | 2014-04-23 | 天津大学建筑设计研究院 | Lightweight fabricated shear wall structure |
| CN104005494A (en) * | 2014-06-10 | 2014-08-27 | 东南大学 | Prefabricated shear wall dry-wet mixed vertical connecting joint structure |
| CN104005494B (en) * | 2014-06-10 | 2016-04-06 | 东南大学 | A kind of precast shear wall does-wet mixing type vertical connection nodes structure |
| CN106930436A (en) * | 2017-04-26 | 2017-07-07 | 广西大学 | A kind of reinforced concrete shear wall of built-in prestress steel diagonal brace |
| CN106930437A (en) * | 2017-04-26 | 2017-07-07 | 广西大学 | A kind of reinforced concrete shear wall of built-in horizontal diagonal brace |
| CN106930436B (en) * | 2017-04-26 | 2023-06-13 | 广西大学 | Reinforced concrete shear wall with built-in prestressed steel diagonal bracing |
| WO2019205336A1 (en) * | 2018-04-28 | 2019-10-31 | 郑州大学 | Energy-dissipating reinforced concrete shear wall having recovery function and construction method therefor |
| CN109281410A (en) * | 2018-10-24 | 2019-01-29 | 江苏中南建筑产业集团有限责任公司 | A kind of connection structure and its construction method of precast wall body |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20130612 Effective date of abandoning: 20150325 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130612 Effective date of abandoning: 20150325 |
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