CN104032832A - Post-tensioning method prestress bamboo-wood framework - Google Patents
Post-tensioning method prestress bamboo-wood framework Download PDFInfo
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- CN104032832A CN104032832A CN201410252117.9A CN201410252117A CN104032832A CN 104032832 A CN104032832 A CN 104032832A CN 201410252117 A CN201410252117 A CN 201410252117A CN 104032832 A CN104032832 A CN 104032832A
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Abstract
The invention discloses a post-tensioning method prestress bamboo-wood framework. The post-tensioning method prestress bamboo-wood framework comprises bamboo-wood structural beams and stand columns connected through joints, wherein each joint comprises a steel sleeve sleeving each stand column and L-shaped steel fixedly connected with the steel sleeve; the steel sleeves are fixed with the stand columns through bolts arranged in the four corners; the other side of each L-shaped steel is fixed with the end part of each beam through the bolts; inclined dowels are arranged at the positions of the steel sleeves of the stand columns; dowel holes are correspondingly formed in the steel sleeves; prestressed reinforcements are arranged inside the dowel holes in a penetrating manner; each of the prestressed reinforcements is tightened and fixed by anchorage devices at the joints in two opposite angles. The prestressed reinforcements can provide higher lateral rigidity when the structure suffers from an earthquake or loads with heavy wind, and further can provide a certain return action when the structure is laterally displaced slightly. The post-tensioning method prestress bamboo-wood framework can reduce the cost of the structure, obviously improves the anti-seismic performance of the structure, can be applied to structural design of the bamboo-wood framework, and can also be widely applied to reinforcing the bamboo-wood structure.
Description
Technical field
The present invention relates to building structure field, particularly a kind of post-stressed bamboo-wood structure framework.
Background technology
The primary structure form of modern wood structure has two kinds of post and beam structure system and Light Wood Frame Constructions.Light-duty wooden is due to the requirement of structure itself, although the larger rigidity of structure can be provided, the space of structure is smaller, need not too be applicable to adopting light-duty wooden compared with the building in great opening space; The claimed structure of post and beam structural system own must have enough bending rigidities and lateral deformation stiffness, and therefore, in the design of post and beam structural framing, structure lateral deformation stiffness and displacement structure are still the subject matter that design need to solve.Therefore Many researchers also starts to propose various novel beam-post wood frames.
Prestressed timber structure has obtained good utilization on wood structures design and ancient wooden building reinforce.The wooden construction of this form uses the character of steel preferably, has made up the deficiency of wooden construction Rigidity and strength.But the application of the prestressed timber structure of present stage is only confined in the reinforcement of component performance of wooden construction, having what mention reinforced bar support form is to be also applied to, in the shear wall structural form of light-duty wooden, in post and beam structure, not relate to.
A little less than the node of China's Traditional Wood structure connects, during earthquake, node not only bears horizontal force, also will bear the effect of drawing and turning round; Structure lateral resistant ability is poor, opposing horizontal loading ability variation, and sidesway is excessive; Ductility of joint is little, easily produces brittle fracture under severe earthquake action.The node of structure beam-post wood frame is key member.At present the general heavy duty metal connector that adopts carries out the connection of beam column, comprises bolt, steel plate, driffractive ring, cuts dish, bar planting and laminated wood rivet etc.This can provide very large rotational stiffness, and bolt and rivet place produce partial pressing and destroy, and even make post longitudinal splitting, implant reinforcing bar place and produce sliding phenomenon, and constructional hole also can weaken beam cross-section.The proposition of novel energy-consumption node and application are also comparatively urgent.
Summary of the invention
The problem existing for solving above-mentioned prior art, the object of this invention is to provide a kind of post-stressed bamboo-wood structure framework, for the lateral deformation stiffness deficiency of wooden construction frame construction and the problem such as energy dissipation capacity is lower, a kind of novel frame construction type has been proposed.At the lateral deformation stiffness of the longitudinal post-stressed raising wooden construction framework of framework, have certain restoring force at prestressed reinforcement under design normal operating condition, be that structure is occurring can providing return action after certain displacement simultaneously.Can reduce the lateral displacement of structure, and the displacement structure having occurred is had to certain control action.The use of novel structures with semi-rigid joints can better hysteretic energy for structure, larger raising the integral rigidity of structure.This frame form can better improve stability and safety.
For achieving the above object, technical scheme of the present invention is:
A kind of post-stressed bamboo-wood structure framework, comprise the bamboo-wood structure crossbeam and the column that by node, connect, described node comprises the steel bushing that is enclosed within on column and the L-type steel affixed with steel bushing, steel bushing is fixed by being arranged on its bolt of four jiaos and column, L-type steel another side is fixed by bolt and beam-end, described column steel bushing position is provided with oblique pin, on steel bushing, correspondence has pin hole, in pin hole, be installed with prestressed reinforcement, prestressed reinforcement is strained and fixed by ground tackle at two pairs of corner nodes.
Further, described node is chosen T-shaped or crisscross joint according to actual needs.
Further, described steel bushing and L-type steel are logical is connected to welding, and Type of Welding is four limit weld all arounds.
Further, described ground tackle comprises the anchor plate that has corresponding reinforced hole, and with the tubaeform anchor slab of anchor plate socket, in anchor slab, corresponding reinforced hole is provided with for clamping the fixture of reinforcing bar.
Further, described ground tackle meets < < use for tendon ground tackle, fixture and connector application technology rules > > (JGJ85-2002) requirement.
Further, described prestressed reinforcement stretch-draw scope is no more than 30% of prestressed reinforcement maximum flexibility displacement.
With respect to prior art, beneficial effect of the present invention is: the present invention appends in the middle of beam-post wood frame framework using prestressed reinforcement as cross support, by pin, ground tackle and connector, prestressed reinforcement is connected with left and right sides post, each uses two prestressed reinforcements, cross-reference across framework.When frame construction is when producing lateral displacement, prestressed reinforcement also can produce stretching accordingly, displacement is larger, the pulling force producing in prestressed reinforcement is just larger, the rigidity providing is also just thereupon larger, and the restoring force of reinforcing bar can make displacement structure recover rapidly, thereby increased the structural stability of this framework.With existing wooden frame system, cost of the present invention is low, and easy construction has solved the less problem of the anti-side rigidity of post and beam framework, and improved the energy efficiency of structure under earthquake and wind action, has improved the security performance of structure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is tee T node structure schematic diagram.
Fig. 3 is cross node structure schematic diagram.
Fig. 4 is node prestressed reinforcement perforation place structural texture schematic diagram.
Fig. 5 fixture schematic diagram of the present invention.
Fig. 6 is anchor plate top view.
Wherein, 1-node, 11-steel bushing, 12-L shaped steel, 13-bolt, 2-crossbeam, 3-column, 4-pin, 5-prestressed reinforcement, 6-ground tackle, 61-anchor plate, 62-is tubaeform anchor slab, 63-fixture.
The specific embodiment
Below in conjunction with the drawings and the specific embodiments, the present invention program is described in further details: below in conjunction with accompanying drawing, to of the present invention, be described in detail:
As shown in Figure 1, a kind of post-stressed bamboo-wood structure framework, comprise the bamboo-wood structure crossbeam 2 and the column 3 that by node 1, connect, described node 1 comprises the steel bushing 11 that is enclosed within on column 3 and the L-type steel 12 affixed with steel bushing 11, steel bushing 11 is fixing with column 3 by being arranged on its bolt of four jiaos 13, L-type steel 12 another sides are fixed by bolt 13 and crossbeam 2 ends, as shown in Figure 4, described column steel bushing 11 positions are provided with oblique pin 4, on steel bushing 11, correspondence has pin hole, in pin hole, be installed with prestressed reinforcement 5, prestressed reinforcement 5 is strained and fixed by ground tackle 6 at two pairs of corner nodes 1.
Further, described node 1 is chosen T-shaped or crisscross joint as shown in Figure 3 as shown in Figure 2 according to actual needs.
Further, described steel bushing 11 is connected to welding with L-type steel 12, and Type of Welding is four limit weld all arounds.
Further, as shown in Figure 5, described ground tackle 6 comprises as shown in Figure 6, has the anchor plate 61 of corresponding reinforced hole, and with the tubaeform anchor slab 62 of anchor plate 61 sockets, the interior corresponding reinforced hole of anchor slab 62 is provided with for clamping the fixture 63 of reinforcing bar.
Further, described ground tackle meets < < use for tendon ground tackle, fixture and connector application technology rules > > (JGJ85-2002) requirement.
Further, described prestressed reinforcement stretch-draw scope is no more than 30% of prestressed reinforcement maximum flexibility displacement.
Operating principle of the present invention is:
The present invention, by post and beam wood frame construction is transformed, by additional prestressing reinforcing bar in framework, increases the rigidity of framework integral body, has increased the stability of structure, has solved the less shortcoming of beam-post wood frame framework lateral deformation stiffness.Belfry form is as Fig. 1, and frame joint form is as Fig. 2.The reserved hole (concrete form and angle are determined according to frame size) of wearing prestressed reinforcement and pin of post and node steel bushing.
In practical structures, first structure is assembled to design structures with semi-rigid joints; By the levels frame joint center prestressed reinforcement arranged in a crossed manner of mounted structure, as the form identifying in Fig. 1.The reserved hole of wearing prestressed reinforcement and pin in post, requires prestressed reinforcement should pass the center of node in advance; Use post stretching technology to carry out stretch-draw to prestressed reinforcement; Stretch-draw is fixed and finally completes installation with ground tackle and fixture after target length.
The lateral displacement that structure produces under seismic load and wind action, it is that relative storey displacement angle is 1/30 that Code for design of timber structures requires the large lower moulding stage of shake.The height of supposing framework is H, and span is L, and the sidesway that framework produces is H/30.The design maximum tensile elongation that calculates prestressed reinforcement is
the internal force size producing while determining generation H/30 according to material, size and the size of selecting wooden construction, selects suitable prestressed reinforcement type and the area of reinforcement; Adopt post stretching to carry out stretch-draw to prestressed reinforcement.
According to the story height H of framework and span L, pre-establish wooden construction beam, post, L-type steel and steel bushing, with and particular location and the size in upper reserved bolt hole and prestressed reinforcement hole, determine required prestressed reinforcement, pin (; According to ground tackle, fixture and the bolt in < < use for tendon ground tackle, fixture and connector application technology rules > > (JGJ85-2002).
Nodes of the present invention, L-type plate and steel bushing be linked as welding, Type of Welding is four limit weld all arounds, and in strict accordance with code requirement, welds during welding; The present invention can assemble beam column and node in actual use according to joint form in Fig. 2 and Fig. 3, be finally assembled into the frame form of Fig. 1.The framework assembling uses post stretching to apply prestressing force, and anchoring is good.
The present invention is by arranging in the general bamboo-wood structure framework that the steel general-wooden combined joint connects that applying prestressed prestress wire supports, and has improved the lateral deformation stiffness of structure.When structure is externally when seismic load or wind action, there is certain lateral displacement in structure, makes prestressed reinforcement produce certain stretching at its elastic stage, makes prestressing force increase the restoring force that produces a certain size, is structure reinstatement rapidly; And under the effect of energy dissipation node, be that Structural Energy Dissipation ability increases, the repeated action of additional restoring force, has improved the energy efficiency of structure, and structure can better be played a role under earthquake or wind action.
The invention discloses a kind of novel beam-post wood frame frame form, comprise a kind of energy dissipating structures with semi-rigid joints, wooden construction beam column, prestressed reinforcement and ground tackle and fixture.It is characterized in that, by design bean column node form, described wooden construction beam column being linked; By the Covered with Angles sleeve at wooden construction post and described node, bore a hole, make prestressed reinforcement be applied in described framework and fix, post stretching applies a certain size prestressing force to prestressed reinforcement, with described ground tackle and fixture, reinforcing bar is fixed, and guarantees the stability of framework after integral installation.The framework cost of this form is low, superior performance, easy construction, and solved the less problem of general wooden construction framework lateral resisting, increased significantly lateral deformation stiffness, also after making framework produce certain relative storey displacement, under prestressed effect, can recover rapidly original-pack, strengthen the stability of structure simultaneously.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (5)
1. a post-stressed bamboo-wood structure framework, comprise the bamboo-wood structure crossbeam and the column that by node, connect, it is characterized in that, described node comprises the steel bushing that is enclosed within on column and the L-type steel affixed with steel bushing, steel bushing is fixed by being arranged on its bolt of four jiaos and column, L-type steel another side is fixed by bolt and beam-end, described column steel bushing position is provided with oblique pin, on steel bushing, correspondence has pin hole, in pin hole, be installed with prestressed reinforcement, prestressed reinforcement is strained and fixed by ground tackle at two pairs of corner nodes.
2. post-stressed bamboo-wood structure framework according to claim 1, is characterized in that, described node is chosen T-shaped or crisscross joint according to actual needs.
3. post-stressed bamboo-wood structure framework according to claim 1, is characterized in that, described ground tackle comprises the anchor plate that has corresponding reinforced hole, and with the tubaeform anchor slab of anchor plate socket, in anchor slab, corresponding reinforced hole is provided with for clamping the fixture of reinforcing bar.
4. post-stressed bamboo-wood structure framework according to claim 1, is characterized in that, described prestressed reinforcement stretch-draw scope is no more than 30% of prestressed reinforcement maximum flexibility displacement.
5. post-stressed bamboo-wood structure framework according to claim 1, is characterized in that, described steel bushing and L-type steel are logical is connected to welding, and Type of Welding is four limit weld all arounds.
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| CN201410252117.9A CN104032832B (en) | 2014-06-09 | 2014-06-09 | A kind of post-stressed bamboo-wood structure framework |
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| CN201410252117.9A CN104032832B (en) | 2014-06-09 | 2014-06-09 | A kind of post-stressed bamboo-wood structure framework |
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| CN104032832B CN104032832B (en) | 2016-04-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631644A (en) * | 2015-01-09 | 2015-05-20 | 上海大学 | Novel connection node structure |
| WO2016122302A1 (en) * | 2015-01-28 | 2016-08-04 | Kaltia Consultoria Y Proyectos, S.A. De C.V. | Prefabricated system for floor slabs and roofs with structural bamboo |
| CN106320735A (en) * | 2016-10-28 | 2017-01-11 | 福州大学 | Prestress anti-offset reinforcement structure applied to wooden frame and construction method of prestress anti-offset reinforcement structure |
| CN106988421A (en) * | 2017-05-23 | 2017-07-28 | 同济大学建筑设计研究院(集团)有限公司 | A kind of timber structure connecting node |
| CN110644619A (en) * | 2019-09-21 | 2020-01-03 | 青岛理工大学 | Assembly type limiting reinforced steel-wood frosted sleeve combined node |
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| JPH10237950A (en) * | 1997-02-27 | 1998-09-08 | Kenjiro Ogata | Wooden brace |
| JPH10299085A (en) * | 1997-04-26 | 1998-11-10 | Takeyoshi Hirano | Frame construction in wooden structure |
| JP2004239038A (en) * | 2003-02-05 | 2004-08-26 | Kawanaka Ryotaro | Earthquake resistant reinforcing construction method of wooden house |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631644A (en) * | 2015-01-09 | 2015-05-20 | 上海大学 | Novel connection node structure |
| WO2016122302A1 (en) * | 2015-01-28 | 2016-08-04 | Kaltia Consultoria Y Proyectos, S.A. De C.V. | Prefabricated system for floor slabs and roofs with structural bamboo |
| US10787811B2 (en) | 2015-01-28 | 2020-09-29 | Kaltia Consultoria Proyectos, S.A. De C.V. | Prefabricated structural bamboo system for slabs and roofs |
| CN106320735A (en) * | 2016-10-28 | 2017-01-11 | 福州大学 | Prestress anti-offset reinforcement structure applied to wooden frame and construction method of prestress anti-offset reinforcement structure |
| CN106988421A (en) * | 2017-05-23 | 2017-07-28 | 同济大学建筑设计研究院(集团)有限公司 | A kind of timber structure connecting node |
| CN110644619A (en) * | 2019-09-21 | 2020-01-03 | 青岛理工大学 | Assembly type limiting reinforced steel-wood frosted sleeve combined node |
| US10876282B1 (en) | 2019-09-21 | 2020-12-29 | Qingdao university of technology | Fabricated limiting-reinforced steel-wood frosted sleeve composite joint |
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| CN104032832B (en) | 2016-04-20 |
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Application publication date: 20140910 Assignee: JIANGSU FORCESET VIBRATION CONTROL TECHNOLOGY CO., LTD. Assignor: Nanjing Forestry University Contract record no.: 2018320000425 Denomination of invention: Post-tensioning method prestress bamboo-wood framework Granted publication date: 20160420 License type: Common License Record date: 20181221 Application publication date: 20140910 Assignee: Nanjing 100 seath Construction Technology Co Ltd Assignor: Nanjing Forestry University Contract record no.: 2018320000424 Denomination of invention: Post-tensioning method prestress bamboo-wood framework Granted publication date: 20160420 License type: Common License Record date: 20181221 |
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Application publication date: 20140910 Assignee: Nanjing Boke New Material Industry Research Institute Co., Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000283 Denomination of invention: Post-tensioning method prestress bamboo-wood framework Granted publication date: 20160420 License type: Common License Record date: 20191119 |
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Effective date of registration: 20200630 Address after: Room 603, building 4, dadihaoting community, No.117, Shimenkan, Qinhuai District, Nanjing City, Jiangsu Province, 210000 Patentee after: Lu Fengyong Address before: Longpan road Xuanwu District of Nanjing city of Jiangsu Province, No. 159 221000 Patentee before: NANJING FORESTRY University |