CN101793075A - Semi-precast beam - Google Patents
Semi-precast beam Download PDFInfo
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- CN101793075A CN101793075A CN 201010116589 CN201010116589A CN101793075A CN 101793075 A CN101793075 A CN 101793075A CN 201010116589 CN201010116589 CN 201010116589 CN 201010116589 A CN201010116589 A CN 201010116589A CN 101793075 A CN101793075 A CN 101793075A
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- precast beam
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Abstract
The invention provides a semi-precast beam, which mainly comprises a beam body and steel bars (a general name of stressed steel bars, stirrups and tie bars), and is characterized in that: only the stressed steel bars and the stirrups on the lower part are pre-arranged in the semi-precast beam; and the beam body is exposed on a banding or welding part of the stirrups and other post-arranged stressed steel bars to prevent the steel bars on the upper part from impeding construction. The semi-precast beam has the advantages that: the steel bars of the semi-precast beam do not conflict with the steel bars of other components in the process of installation, so that the treatment of the steel bars at joints meets the requirement of a specification of a reinforced concrete structure; a beam holding component bears the construction load instead of a full scaffold by using a principle of simply supported beams; the connection of the steel bars and the banding of templates are performed on the floor, so that the safety of workers is ensured, and the construction efficiency and the construction quality are obviously improved; the amount of high-altitude operation is substantially reduced; and the post-casting of concrete is operated on the floor, and the amount of the post-cast concrete is substantially reduced, so the construction speed is substantially improved.
Description
Technical field
The present invention relates to the building unit beam.
Background technology
Quickening along with the Chinese Urbanization's process, society is urgent day by day to the demand of high residential building, and traditional building, all be construct at the scene (comprising the supporting of laid reinforcement binding, template, concrete build etc.) finish, because engineering staff's technical level is uneven, and amount of high-altitude operation is big, has template and the backing material consumption is big, efficiency of construction is low, long construction period, workmanship are not easy problems such as control.Can only satisfy corresponding precast concrete standard and water node processing after in the domestic and international existing prefabricated units form of construction work, therefore can not satisfy Chinese cast-in-situ steel reinforced concrete technical requirements, just carry out technology exploration in the design of prefabricated units problem such as aspect the installation node processing.
Summary of the invention
The object of the present invention is to provide a kind of semi-precast beam of being convenient to construct and satisfying Chinese cast-in-situ steel reinforced concrete technical requirements.
The invention provides a kind of semi-precast beam, mainly comprise beam body and reinforcing bar (general designation of steel bar stress, stirrup and lacing wire), it is characterized in that: only set bottom steel bar stress and stirrup in the described semi-precast beam in advance; The beam body is exposed at the position of stirrup and other rearmounted steel bar stress colligation or welding, in order to avoid upper reinforcement hinders construction.
Semi-precast beam provided by the invention can pre-set lacing wire in its semi-precast beam; The beam body is exposed at the position of lacing wire and other rearmounted steel bar stress colligation or welding.
Semi-precast beam provided by the invention, the gap of its stirrup and beam body will satisfy the needs that rearmounted side steel bar stress inserts.
Semi-precast beam provided by the invention, its stirrup can be an open type, so that insert other rearmounted steel bar stress.
Semi-precast beam provided by the invention, its semi-precast beam cross section can be up-narrow and down-wide, inserts the steel bar stress of side so that have living space.
Semi-precast beam provided by the invention, its semi-precast beam cross section can be inverted T-shaped.
When the construction semi-precast beam:
Earlier under the position that semi-precast beam will be installed, install haunched member, the lifting semi-precast beam is behind the precalculated position, penetrate steel bar stress 5 (see figure 5)s of semi-precast beam both sides, lacing wire 4 crotches in both sides are adjusted into 135 degree, finish PROCESS FOR TREATMENT such as laid reinforcement binding or welding in semi-precast beam two ends and the bearing simultaneously, semi-precast beam top steel bar stress 6 is penetrated U-stirrups 3, seal the U-stirrups 3 of semi-precast beam then, stirrup 3 crotches are adjusted into 135 degree and colligation (see figure 6)s.Install semi-precast beam two side templates 7 (see figure 7)s, build slightly expanded concrete.
When construction semi-precast beam primary and secondary girder connection:
Use lower plate 8,9 with (see figure 8) after partly prefabricated main cable and girder puts in place, remove half prefabricated girder train wheel bridge 8, hoisting prefabricated secondary beam, as shown in Figure 9, insert half prefabricated primary and secondary beam both sides steel bar stress 5, and lacing wire 4 crotches of both sides steel bar stress 5 are adjusted into 135 degree, half prefabricated primary and secondary beam top steel bar stress 6 is inserted in the untight stirrup 3 of semi-precast beam, sealing semi-precast beam stirrup 3 is adjusted stirrup 3 crotches to 135 degree and colligation.Install semi-precast beam two side templates 7, build slightly expanded concrete.
When construction semi-precast beam right-angled intersection node:
The semi-precast beam that lower plate 8,9 is housed of directions X is lifted the back (see figure 8) that puts in place, remove train wheel bridge 8, when the semi-precast beam of lifting Y direction, its lower plate 9 is in the lower rebar 2 near the directions X semi-precast beam, as shown in Figures 9 and 10, with haunched member Y direction semi-precast beam is held up, the lower plate 9 with Y direction semi-precast beam removes then, regulates the semi-precast beam beam body 1 of Y direction to setting height with the thread regulator on the haunched member (being commonly called as leading screw) again.Insert the steel bar stress 5 of two semi-precast beam both sides, and lacing wire 4 crotches of steel bar stress are adjusted into 135 degree, top steel bar stress 6 is inserted in the untight stirrup 3 of semi-precast beam, sealing semi-precast beam stirrup 3 is adjusted stirrup 3 crotches to 135 degree and colligation.Install semi-precast beam two side templates 7, build slightly expanded concrete.
When construction semi-precast beam and floor node:
After semi-precast beam lifting put in place, remove train wheel bridge 8, insert the steel bar stress 5 of semi-precast beam both sides, and lacing wire 4 crotches of steel bar stress are adjusted into 135 degree, lay cast-in-situ floor reinforcing bar or hoisting prefabricated floor on supporting plate member 12 and i iron 13, the colligation floor stretches into the reinforcing bar 10 (seeing Figure 11) in semi-precast beam stirrup 3 scopes, to top steel bar stress 6 is inserted in the untight stirrup 3 of semi-precast beam, sealing semi-precast beam stirrup 3 is adjusted stirrup 3 crotches to 135 degree and colligation.Install semi-precast beam two side templates 7, build slightly expanded concrete.
When construction semi-precast beam and support node:
Under the position that semi-precast beam will be installed, install earlier haunched member 11, the lifting semi-precast beam (is seen Figure 12) behind the precalculated position, in steel bar stress 5 that penetrates the semi-precast beam both sides and top steel bar stress 6, the stirrup 15 (seeing Figure 13) of colligation bearing place vertical reinforcement 14, lacing wire 4 crotches in both sides are adjusted into 135 degree, the U-stirrups 3 of sealing semi-precast beam is adjusted into 135 degree and colligations with stirrup 3 crotches.Install semi-precast beam two side templates 7, build slightly expanded concrete.
Semi-precast beam provided by the invention, its advantage is:
1 because the semi-precast beam reinforcing bar does not conflict with other member reinforcing bar in installation process, can make the reinforcing bar at node places such as beam column, beam slab, Liang Qiang handle the code requirement that satisfies reinforced concrete structure;
2 is prerequisite with existing designing institute conventional design method, need not carry out specialized designs;
3 utilize the simply supported beam principle, are equipped with haunched member and bear working load, the load of floor can be delivered on the semi-precast beam by some members, replace full hall scaffold;
The connection of 4 reinforcing bars, the colligation of template all are to carry out at the flooring place, and when guaranteeing safety of workers, efficiency of construction and construction quality significantly improve;
5 semi-precast beams are ground or prefabrication at the construction field (site), and amount of high-altitude operation significantly reduces;
6 after-pouring concrete are in the flooring operation, and afterwards the pouring concrete amount significantly reduces, and speed of application significantly improves.
Description of drawings
Fig. 1 is the structural representation of trapezoid cross section semi-precast beam;
Fig. 2 is the structural representation of platform tee section semi-precast beam;
Fig. 3 is the structural representation of square-section semi-precast beam;
Fig. 4 is the structural representation of inverted T-shaped cross section semi-precast beam;
Fig. 5 lays the steel bar stress schematic diagram for semi-precast beam;
Fig. 6 is a semi-precast beam colligation steel bar stress schematic diagram;
Fig. 7 is a semi-precast beam colligation template schematic diagram;
Fig. 8 is semi-precast beam and clamping plate schematic diagram;
Fig. 9 is a semi-precast beam primary and secondary girder connection schematic diagram;
Figure 10 is semi-precast beam primary and secondary girder connection and clamping plate schematic diagram;
Figure 11 is semi-precast beam and floor node schematic diagram;
Figure 12 is semi-precast beam and bearing schematic diagram;
Figure 13 is semi-precast beam and support node schematic diagram.
The specific embodiment
Trapezoid cross section semi-precast beam, its structure comprise trapezoid cross section beam body 1 and steel bar stress 2 as shown in Figure 1,3 of steel bar stress 2 one rows are distributed in the bottom of beam body 1 and stretch out outside the beam body 1, stretch out above the beam body at beam body 1 upper shed formula stirrup 3, laterally lacing wire 4, the side of stretching out the beam body.
2 tee section semi-precast beams of embodiment
Platform tee section semi-precast beam, its structure comprise platform tee section beam body 1 and bottom two row's steel bar stresses 2 as shown in Figure 2,3 of steel bar stress 2 every rows are distributed in the bottom of beam body 1 and stretch out outside the beam body 1, stretch out above the beam body at beam body 1 open type stirrup 3, laterally lacing wire 4, the side of stretching out the beam body.
Square-section semi-precast beam, its structure comprise rectangular cross section beam body 1 and steel bar stress 2 as shown in Figure 3, and two of steel bar stress 2 one rows are distributed in the bottom of beam body 1 and stretch out outside the beam body 1, stretch out above the beam body at beam body 1 open type stirrup 3.
Inverted T-shaped cross section semi-precast beam, its structure as shown in Figure 4, comprise inverted T-shaped cut section bar body 1 and bottom steel bar stress 2,3 of steel bar stress 2 one rows are distributed in the bottom of beam body 1 and stretch out outside the beam body 1, and the beam body is inverted T-shaped, stretch out above the wide portion of beam body at beam body 1 open type stirrup 3, stirrup is bigger 2 centimetres than the diameter of rearmounted side steel bar stress with the gap of beam body side surface, laterally lacing wire 4, the side of stretching out the beam body.
Claims (9)
1. a semi-precast beam mainly comprises beam body and reinforcing bar, it is characterized in that: only set bottom steel bar stress and stirrup in the described semi-precast beam in advance; The beam body is exposed at the position of stirrup and other rearmounted steel bar stress colligation or welding.
2. according to the described semi-precast beam of claim 1, it is characterized in that: pre-set lacing wire in the described semi-precast beam; The beam body is exposed at the position of lacing wire and other rearmounted steel bar stress colligation or welding.
3. according to the described semi-precast beam of claim 1, it is characterized in that: the needs that rearmounted side steel bar stress inserts will be satisfied in the gap of described stirrup and beam body.
4. according to the described semi-precast beam of claim 2, it is characterized in that: the needs that rearmounted side steel bar stress inserts will be satisfied in the gap of described stirrup and beam body.
5. according to the described semi-precast beam of one of claim 1～4, it is characterized in that: described stirrup is an open type.
6. according to the described semi-precast beam of one of claim 1～4, it is characterized in that: described semi-precast beam cross section is up-narrow and down-wide.
7. according to the described semi-precast beam of claim 5, it is characterized in that: described semi-precast beam cross section is up-narrow and down-wide.
8. according to the described semi-precast beam of claim 5, it is characterized in that: described semi-precast beam cross section is an inverted T-shaped.
9. according to the described semi-precast beam of claim 6, it is characterized in that: described semi-precast beam cross section is an inverted T-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010116589 CN101793075A (en) | 2010-03-03 | 2010-03-03 | Semi-precast beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010116589 CN101793075A (en) | 2010-03-03 | 2010-03-03 | Semi-precast beam |
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| CN101793075A true CN101793075A (en) | 2010-08-04 |
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| CN 201010116589 Pending CN101793075A (en) | 2010-03-03 | 2010-03-03 | Semi-precast beam |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481165A (en) * | 2014-12-09 | 2015-04-01 | 卜良桃 | Pressurizing and fixing device and reinforcing method for adhered steel plate of reinforced concrete beam |
| CN106437026A (en) * | 2016-10-21 | 2017-02-22 | 季兆桐 | One-step formed multispan prefabricated beam and construction method thereof |
| CN107599152A (en) * | 2017-11-06 | 2018-01-19 | 韩城伟力远大建筑工业有限公司 | Prefabricated bodies, prefabricated components and its construction method |
| CN107762067A (en) * | 2017-10-27 | 2018-03-06 | 广东省建筑科学研究院集团股份有限公司 | A kind of assembly concrete girder construction |
| CN109594717A (en) * | 2018-11-06 | 2019-04-09 | 安徽水利开发股份有限公司 | Assembled steel reinforced concrete column construction technology based on prefabricated standard assembly piece |
| CN110027108A (en) * | 2019-04-18 | 2019-07-19 | 江苏广兴集团建筑装配科技有限公司 | A kind of composite beam and its production procedure |
| CN110863608A (en) * | 2019-11-20 | 2020-03-06 | 中国十七冶集团有限公司 | Construction method of large-span space section beam |
| CN112096071A (en) * | 2020-08-11 | 2020-12-18 | 广州倬林工程技术服务有限公司 | Composite assembly type building construction method for sinking type reclaimed water plant |
| CN113265949A (en) * | 2021-05-17 | 2021-08-17 | 中电建十一局工程有限公司 | Construction method of support-free concrete beam |
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| US20030019177A1 (en) * | 2001-07-30 | 2003-01-30 | Kwon Heug Jin | Combination light-weight deck form, with connectors |
| CN2633992Y (en) * | 2003-09-09 | 2004-08-18 | 吴方伯 | Steel bar concrete prefabricated member for compound girder |
| CN2641169Y (en) * | 2003-09-26 | 2004-09-15 | 吴方伯 | Steel bar reinforced concret prefabricate structure members used for overlaid beam |
| US20080245022A1 (en) * | 2005-01-29 | 2008-10-09 | Choi Chong-Hak | Framework System For Truss Deck Using Construction Mold Assembly |
| CN201209290Y (en) * | 2008-04-25 | 2009-03-18 | 万科企业股份有限公司 | Precast concrete beam |
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2010
- 2010-03-03 CN CN 201010116589 patent/CN101793075A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030019177A1 (en) * | 2001-07-30 | 2003-01-30 | Kwon Heug Jin | Combination light-weight deck form, with connectors |
| CN2633992Y (en) * | 2003-09-09 | 2004-08-18 | 吴方伯 | Steel bar concrete prefabricated member for compound girder |
| CN2641169Y (en) * | 2003-09-26 | 2004-09-15 | 吴方伯 | Steel bar reinforced concret prefabricate structure members used for overlaid beam |
| US20080245022A1 (en) * | 2005-01-29 | 2008-10-09 | Choi Chong-Hak | Framework System For Truss Deck Using Construction Mold Assembly |
| CN201209290Y (en) * | 2008-04-25 | 2009-03-18 | 万科企业股份有限公司 | Precast concrete beam |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481165A (en) * | 2014-12-09 | 2015-04-01 | 卜良桃 | Pressurizing and fixing device and reinforcing method for adhered steel plate of reinforced concrete beam |
| CN104481165B (en) * | 2014-12-09 | 2017-03-15 | 卜良桃 | Reinforced beam affixing steel plate pressurization fixing device and reinforcement means |
| CN106437026A (en) * | 2016-10-21 | 2017-02-22 | 季兆桐 | One-step formed multispan prefabricated beam and construction method thereof |
| CN107762067A (en) * | 2017-10-27 | 2018-03-06 | 广东省建筑科学研究院集团股份有限公司 | A kind of assembly concrete girder construction |
| CN107599152A (en) * | 2017-11-06 | 2018-01-19 | 韩城伟力远大建筑工业有限公司 | Prefabricated bodies, prefabricated components and its construction method |
| CN109594717A (en) * | 2018-11-06 | 2019-04-09 | 安徽水利开发股份有限公司 | Assembled steel reinforced concrete column construction technology based on prefabricated standard assembly piece |
| CN110027108A (en) * | 2019-04-18 | 2019-07-19 | 江苏广兴集团建筑装配科技有限公司 | A kind of composite beam and its production procedure |
| CN110863608A (en) * | 2019-11-20 | 2020-03-06 | 中国十七冶集团有限公司 | Construction method of large-span space section beam |
| CN112096071A (en) * | 2020-08-11 | 2020-12-18 | 广州倬林工程技术服务有限公司 | Composite assembly type building construction method for sinking type reclaimed water plant |
| CN113265949A (en) * | 2021-05-17 | 2021-08-17 | 中电建十一局工程有限公司 | Construction method of support-free concrete beam |
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Application publication date: 20100804 |