CN102943536B - A kind of fabricated assembly overall shear wall - Google Patents
A kind of fabricated assembly overall shear wall Download PDFInfo
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- CN102943536B CN102943536B CN201210498645.3A CN201210498645A CN102943536B CN 102943536 B CN102943536 B CN 102943536B CN 201210498645 A CN201210498645 A CN 201210498645A CN 102943536 B CN102943536 B CN 102943536B
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- wall
- reserving hole
- shear wall
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Abstract
The invention discloses a kind of fabricated assembly overall shear wall, comprise upper strata body of wall and lower floor's body of wall, bottom the body of wall of upper strata, two ends are all vertically provided with columniform reserving hole, the spiral stirrup of vertical equal altitudes is provided with in reserving hole, reserving hole top is provided with the steam vent with ft connection, reserving hole bottom is provided with the grout hole with ft connection, in edge member in lower floor's body of wall, the vertical reinforcement of inner side extends lower floor's body of wall top, then divide into groups boundling, multiple reinforcing bar beams of composition insert in corresponding reserving hole respectively, until the top of reserving hole, concrete sand slurry is filled with between reinforcing bar beam and reserving hole.Present invention reduces the difficulty of construction of reinforcing bar beam overlap joint, and can operative constraint pressure zone concrete, the overlap joint that can be used in precast concrete assembled integral shear wall system between vertical reinforcement connects.
Description
Technical field
The present invention relates to a kind of Vertical bar connection technology of precast concrete assembled integral shear wall, belong to construction work precast concrete technical field.
Background technology
Shear wall structure has higher supporting capacity and lateral deformation stiffness, effectively can resist horizontal shear, has good anti-seismic performance.After introducing prefabrication and assembly construction technology, precast concrete assembled integral shear wall structure also has: be convenient to factory normalization and produce, situ wet operation is few, easy construction, alleviates surrounding environment influence, reduces the advantage such as transport resource and human resources input.Therefore, along with the current demand of China's industrialization of construction industry and housing industrialization, precast concrete assembled integral shear wall structure will have broad application prospects in China's multilayer and high residential building.
The core technology of precast concrete assembled integral shear wall structure is the connected mode between the component such as shear wall and beam, upper strata shear wall and lower floor's shear wall, and its quality directly has influence on the bearing capacity and use etc. of structure.And the Vertical bar connection technology of shear wall is one of them main contents, the other equivalent bar reinforcement of vertical applied force reinforcing bar in shear wall structure lower floor body of wall inward flange component is replaced (lower end of bar reinforcement is embedded in lower floor's body of wall) by current existing shear wall Vertical bar connection technology, and is stretched into the upper end of bar reinforcement in grout hole reserved bottom the body of wall of upper strata; Or the every root vertical reinforcement in lower floor's body of wall inward flange component is inserted respectively in reserving hole that upper strata body of wall pre-sets.
There is additional vertical reinforcement, the problems such as higher, site operation amount increasing required to field operation and construction precision in above-mentioned shear wall Vertical bar connection technology.Therefore, on the basis of existing link technique, propose a kind of fabricated assembly overall shear wall adopting the Vertical bar connection technology of improvement, the promotion and application of precast concrete assembled integral shear wall structure are had great importance.
Link technique between precast shear wall and the component such as wall, beam is the key point of precast concrete assembled integral system, how to build the Novel connection type that stress performance is good, construction measure is reasonable, construction and installation are easy, be the technological difficulties that precast concrete assembled integral shear wall structure component connects always.
Summary of the invention
Technical problem: the invention provides a kind of construction convenient, efficient, type of attachment is simple, and power transmission is direct, stressed clear and definite fabricated assembly overall shear wall.
Technical scheme: fabricated assembly overall shear wall of the present invention, comprise upper strata body of wall and lower floor's body of wall, bottom the body of wall of upper strata, two ends are all vertically provided with columniform reserving hole, the spiral stirrup of vertical equal altitudes is provided with in reserving hole, reserving hole top is provided with the steam vent with ft connection, reserving hole bottom is provided with the grout hole with ft connection, in edge member in lower floor's body of wall, the vertical reinforcement of inner side extends lower floor's body of wall top, then divide into groups boundling, multiple reinforcing bar beams of composition insert in corresponding reserving hole respectively, until the top of reserving hole, concrete sand slurry is filled with between reinforcing bar beam and reserving hole.
In the present invention, the vertical height of reserving hole meets the lap length required by structure design, and the circular outer diameter span of spiral stirrup is 0.5b
wto b
w-2c, wherein b
wfor the breadth of section of shear wall, c is thickness of concrete cover, and pre-buried spiral stirrup can operative constraint pressure zone concrete, improves its intensity, ductility and the bond stress to overlapped vertical reinforcement.
In the present invention, the inwall of reserving hole is uneven, and the difference in internal diameters of depressed area and boss is 3mm ~ 10mm, is connected to ensure between grouting material with shear wall reliable.
Beneficial effect: compared with prior art, the present invention has the following advantages:
(1) vertical reinforcement in the upper and lower layer body of wall of shear wall adopts boundling, the indirectly mode of overlap joint to connect, avoid in existing Vertical bar connection technology and need every root reinforcing bar to insert in each self-corresponding reserved reserving hole, and reserved reserving hole is larger, be convenient to the overlap joint of vertical reinforcement, solve in existing Vertical bar connection technology problems such as needing accurate location, reduce difficulty of construction, make site operation convenient, efficient.
(2), after the vertical reinforcement grouping boundling that lower floor's body of wall top is stretched out, stretch to the reserving hole top that upper strata body of wall is corresponding respectively, the indirect overlap joint realizing vertical reinforcement connects, and avoids and additionally adds connecting reinforcement.
(3) vertical reinforcement after connecting is scattered in the edge of reserving hole, for shear wall provides certain out-of-plane bearing capacity.
(4) spiral stirrup that hole inwall is pre-buried can retrain pressure zone concrete effectively, improves its intensity and the bond stress to overlapped vertical reinforcement, and adds the concrete area in pressure zone.
(5) under the prerequisite ensureing structural entity stress performance, this type of attachment is simple, and power transmission is direct, clearly stressed.
Accompanying drawing explanation
Fig. 1 is the Vertical bar connection schematic diagram of precast concrete assembled integral shear wall upper strata body of wall of the present invention and lower floor's body of wall.
Fig. 2 is the A-A sectional drawing of shear wall upper strata body of wall in Fig. 1.
Fig. 3 is the schematic diagram of shear wall upper strata body of wall or lower floor's body of wall before Vertical bar connection.
Fig. 4 is the B-B sectional drawing of body of wall in Fig. 3.
Wherein: 1 is upper strata body of wall, 2 is lower floor's body of wall, and 3 is reserving hole, 4 is spiral stirrup, and 5 is steam vent, and 6 is vertical reinforcement, wherein 601-606 is respectively the vertical reinforcement that 1-6 root stretches into relevant position in the body of wall reserving hole of upper strata, and 7 is edge member, and 8 is grout hole.
Detailed description of the invention
Below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described further:
Fig. 1 is the Vertical bar connection schematic diagram of fabricated assembly overall shear wall upper strata of the present invention body of wall 1 and lower floor's body of wall 2, and Fig. 2 correspond to the A-A sectional drawing of shear wall upper strata body of wall 1 in Fig. 1.As shown in Figure 1 and Figure 2, a kind of fabricated assembly overall shear wall, its chief component comprises: shear wall structure upper strata body of wall 1, lower floor's body of wall 2, reserving hole 3, spiral stirrup 4, and vertical reinforcement 6.The vertical applied force reinforcing bar 6 that lower floor's body of wall 2 top is stretched out divides into groups after boundling, stretches in a reserving hole 3 pre-setting bottom upper strata body of wall 1 respectively, wherein, at the spiral stirrup 4 of the inwall vertically pre-buried equal altitudes with it of reserving hole 3.
Fig. 3 is upper strata body of wall 1 or the body of wall schematic diagram of lower floor's body of wall 2 before Vertical bar connection.Composition graphs 2, Fig. 3, two cylindrical reserving holes 3 are vertically reserved respectively in the two ends bottom shear wall of the present invention, and reserving hole 3 vertical height need meet the lap length required by design; The round diameter span of reserving hole 3 is 0.5b
w~ b
w-2c-2d, wherein b
wfor the breadth of section of shear wall upper strata body of wall 1, c is the thickness of concrete cover of upper strata body of wall 1, and d is the diameter of edge member 9.And along shear wall's thickness direction, each reserving hole 3 is designed with and is attached thereto logical steam vent 5 and grout hole 8, wherein steam vent 5 is connected to the top of hole 3, and grout hole 8 is positioned at the bottom of hole 3.
The spiral stirrup 4 of vertical pre-buried equal altitudes in reserving hole 3, as shown in Figure 2, the circular outer diameter span of pre-buried spiral stirrup 4 is 0.5b
w~ b
w-2c, circular outer diameter refers to that helix that vertically pre-buried spiral stirrup 4 coils projects the external diameter of the circular geometry formed in the horizontal plane, instead of refers to the cross sectional area of spiral stirrup 4.Meanwhile, the inwall of reserving hole 3 should be designed to roughness, and wherein the difference in internal diameters of depressed area and boss is 3mm ~ 10mm, is connected to ensure between grouting material with shear wall upper strata body of wall 1 reliable.
In fabricated assembly overall shear wall of the present invention, without the need to setting up connecting reinforcement, but being one group by every three of the vertical reinforcement 6 stretched out in lower floor's body of wall 2 top component 7, respectively after boundling, extending into accordingly in the reserved reserving hole 3 of upper strata body of wall 1.Vertical reinforcement 6 need stretch out shear wall lower floor body of wall 2 top certain distance, and during to guarantee to be connected with upper strata body of wall 1, all vertical reinforcements 6 arrive the top of hole 3 just.For vertical reinforcement 601-606, before not connecting, as shown in Figure 3, Figure 4, vertical reinforcement 601-606 to lay respectively at inside confining part 7 and coupled, and contact with edge member is tangent, edge member 9, for being arranged on the edge of shear wall, plays the effect improving stress performance, and the concrete setting of edge member 9 and requirement can consult existing specification, book information.After being connected with upper strata body of wall 1, as shown in Figure 1 and Figure 2, vertical reinforcement 601-603 boundling is one group, stretches in the outermost reserving hole 3 of upper strata body of wall 1, and vertical reinforcement 604-606 boundling is stretch to after another group in the hole contiguous with reserving hole 3.
In the present invention, after all vertical reinforcements 6 have connected, carry out slip casing by pressure from bottom to top by grout hole 8 to reserving hole 3, also maintenance is shaping to carry out sealing subsequently.Because the pre-buried spiral stirrup 4 with large circular outer diameter of reserving hole 3 inwall can operative constraint grouting material, improve its intensity and the bond stress to overlapped vertical reinforcement 6, and add the concrete area in pressure zone, thus ensure the globality of reliability and the structure connected, make shear wall upper strata body of wall 1, lower floor's body of wall 2 co-operation.
Below schematically the present invention and embodiment thereof are described, this description is not restricted, accompanying drawing 1---just one of embodiments of the present invention shown in Fig. 4, mainly for wall limb depth of section and the ratio of thickness be 5 ~ 8 precast concrete short-limb shear wall provided.When connected mode disclosed in the present invention be applied to wall limb depth of section be greater than the general shear wall of 8 with the ratio of thickness time, a reserving hole can be set up at the middle part of shear wall bottom surface according to actual needs, and at the pre-buried spiral stirrup of the inwall of hole.Therefore, if others skilled in the art are not when departing from the invention aim, adopt the means of structural connection similar to this technical scheme and embodiment, all should protection scope of the present invention be belonged to.
Claims (3)
1. a fabricated assembly overall shear wall, it is characterized in that, this shear wall comprises upper strata body of wall (1) and lower floor's body of wall (2), two ends, bottom, described upper strata body of wall (1) are all vertically provided with columniform reserving hole (3), the spiral stirrup (4) of vertical equal altitudes is provided with in described reserving hole (3), reserving hole (3) top is provided with and the steam vent of ft connection (5), and reserving hole (3) bottom is provided with and the grout hole of ft connection (8)
In edge member (7) in described lower floor body of wall (2), the vertical reinforcement (6) of inner side extends lower floor's body of wall (2) top, then divide into groups boundling, multiple reinforcing bar beams of composition insert in corresponding reserving hole (3) respectively, until the top of reserving hole (3), between described reinforcing bar beam and reserving hole (3), be filled with concrete sand slurry.
2. fabricated assembly overall shear wall according to claim 1, is characterized in that, the vertical height of described reserving hole (3) meets the lap length required by structure design, and the circular outer diameter span of described spiral stirrup (4) is 0.5b
wto b
w-2c, wherein b
wfor the breadth of section of upper strata body of wall (1), c is the thickness of concrete cover of upper strata body of wall (1).
3. fabricated assembly overall shear wall according to claim 1 and 2, is characterized in that, the inwall of described reserving hole (3) is uneven, and the difference in internal diameters of depressed area and boss is 3mm ~ 10mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210498645.3A CN102943536B (en) | 2012-11-29 | 2012-11-29 | A kind of fabricated assembly overall shear wall |
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| CN201210498645.3A CN102943536B (en) | 2012-11-29 | 2012-11-29 | A kind of fabricated assembly overall shear wall |
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| CN102943536A CN102943536A (en) | 2013-02-27 |
| CN102943536B true CN102943536B (en) | 2015-09-16 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929279B (en) * | 2015-06-26 | 2017-05-24 | 东南大学 | Pre-cast shear wall vertical rebar centralized restraint lap joint construction |
| CN104929278A (en) * | 2015-07-06 | 2015-09-23 | 沈阳建筑大学 | Assembly type dense column hollow shear wall structure |
| CN106639040B (en) * | 2016-10-13 | 2019-02-19 | 哈尔滨工业大学 | Elongated hole precast shear wall and its construction method is perfused after vertical muscle boundling |
| CN109853848A (en) * | 2019-02-01 | 2019-06-07 | 广州建筑产业研究院有限公司 | The connection structure of prefabricated column |
| CN111321807B (en) * | 2020-02-28 | 2021-11-02 | 南京工程学院 | Assembled frame construction post-post bundling reinforcing bar connection structure |
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| JPH094118A (en) * | 1995-06-15 | 1997-01-07 | Supankuriito Corp:Kk | Precast concrete plate |
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| CN102691365B (en) * | 2012-05-31 | 2014-04-02 | 东南大学 | Connecting structure for assembly type concrete shear wall edge member |
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| JPH094118A (en) * | 1995-06-15 | 1997-01-07 | Supankuriito Corp:Kk | Precast concrete plate |
| CN2893023Y (en) * | 2006-03-27 | 2007-04-25 | 扬州大学 | Steel reinforced concrete assembling frame-shear wall construction structural body |
| CN201217847Y (en) * | 2008-06-05 | 2009-04-08 | 黑龙江宇辉新型建筑材料有限公司 | Plug-in type preformed hole grouting reinforcement lapping connection component |
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