CN105155854B - Cast-in-place unbonded prestressed concrete floor slabs two dimension prestressing muscle laying method - Google Patents
Cast-in-place unbonded prestressed concrete floor slabs two dimension prestressing muscle laying method Download PDFInfo
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- CN105155854B CN105155854B CN201510536842.3A CN201510536842A CN105155854B CN 105155854 B CN105155854 B CN 105155854B CN 201510536842 A CN201510536842 A CN 201510536842A CN 105155854 B CN105155854 B CN 105155854B
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Abstract
A kind of cast-in-place unbonded prestressed concrete floor slabs two dimension prestressing muscle laying method, the characteristics of according to unbonded prestressing tendon in floor being in space hyperbolic rope network arrangements, the presstressed reinforcing steel of regulation a direction is first spread, then the spatial relation of intersection two dimension prestressing muscle is calculated, and two dimension prestressing muscle point of intersection is indicated in plane lay figure, Hou Pu directions presstressed reinforcing steel passes through below the presstressed reinforcing steel of Xian Pu directions at this point during lay, after the completion of two dimension prestressing muscle plane is laid, it is in place according still further to the curve shape of design requirement, and with support reinforcing bar fixation.The present invention is easily received and operated by construction worker, and depositing speeds are fast and not error-prone, can ensure that space hyperbolic prestressed cable netting twine shape form meets design requirement, it is ensured that construction quality.
Description
Technical field
The invention belongs to construction engineering technical field, is exactly specifically to be related to a kind of cast-in-place unbonded prestressed concrete floor slabs
Two dimension prestressing muscle laying method, the lay difficulty of presstressed reinforcing steel is simplified, improve and lay efficiency and construction quality.
Background technology
Non-cohesive Prestressing Force Technology can increase strengthening floor slab rigidity in architectural engineering, reduce slab thickness, save reinforcing bar and mix
Native dosage is coagulated, mitigates dead load, reduces engineering cost.The span of floor can also be increased in addition, meet people to large span, big
The structural function of the standard width of a room in an old-style house and room flexible isolation, lift the use function of building.Therefore, prestressing without bondn in recent years
Technology has obtained more application in architectural engineering floor.
But in existing large-span bidirectional non-cohesive pre-stressed concrete floor slab construction, because unbonded prestressing tendon is in
How space hyperbolic rope network arrangements, the unbonded prestressing tendon of both direction, in irregular staggeredly phenomenon, are carried out pre- in point of intersection
The lay of stress rib and positioning, it is ensured that the linear form of two dimension prestressing muscle meets design requirement after lay, is that two dimension prestressing mixes
Coagulate the technical barrier of native floor slab construction.At present, traditional laying method is from bottom to top laid by chronological order, i.e., calculates first
The vertical coordinate of intersection two dimension prestressing muscle, the presstressed reinforcing steel of bottom is determined, and marked as 1, then according to same sample prescription
Method determines that root of remaining presstressed reinforcing steel bottom, and marked as 2, according to said method, until arranging the elder generation of all presstressed reinforcing steels
Laying order afterwards, this traditional laying method need not intersect lashing, but because laying order does not have rule to cause lay side
Method is complicated, and difficulty of construction is big, the engineering larger to planar dimension, can influence construction speed；In advance should for Multispans continuous soap-free emulsion polymeization
Power concrete floor, it will be unable to be carried out.
The content of the invention
The purpose of the present invention is to be directed to existing cast-in-place unbonded prestressed concrete floor slabs two dimension prestressing muscle laying method
Complexity, the big technological deficiency that can not be even carried out of difficulty of construction, there is provided a kind of cast-in-place unbonded prestressed concrete floor slabs are double
To presstressed reinforcing steel laying method, easily grasped by operator, speed of application is fast, solves cast-in-place soap-free emulsion polymeization two dimension prestressing and mixes
The construction difficult problem of concrete board, it can be ensured that two dimension prestressing muscle Spatial Cable net accurate positioning, ensure construction speed and construction quality.
Technical scheme
In order to realize above-mentioned technical purpose, the cast-in-place unbonded prestressed concrete floor slabs two dimension prestressing muscle that the present invention designs
Laying method, it is characterised in that it includes following steps：
(1) two dimension prestressing muscle is calculated in the relative space position of intersection, determines the laying order of presstressed reinforcing steel simultaneously
Draw presstressed reinforcing steel plane and lay figure；
(2) plane drawn by step (1) lays the laying order that figure determines, two dimension prestressing muscle is laid in into mould one by one
In plate；
(3) two dimension prestressing muscle plane lay after the completion of, according to design requirement curve shape by laid it is pre- answer
Power muscle is installed in place one by one, and with support reinforcing bar fixation.
Further, it is that regulation span centre is located at lower row direction first that the step (1), which draws presstressed reinforcing steel plane lay figure,
Presstressed reinforcing steel is first spread, and then calculates the overlying relation of intersection two dimension prestressing muscle, and two-way in plane lays figure
Presstressed reinforcing steel point of intersection is indicated, and represents the vertical coordinate of the presstressed reinforcing steel in Hou Pu directions at this point less than Xian Pu directions
Presstressed reinforcing steel.
Further, the laying order that the step (2) is determined by plane lay figure is the nothing that span centre is located to lower row direction
Binding prestress reinforcement is laid in template one by one, then lays the presstressed reinforcing steel of other direction one by one again, according to the mark for laying figure
Show, when the absolute altitude of Hou Pu directions presstressed reinforcing steel is less than Xian Pu directions presstressed reinforcing steel absolute altitude in intersection, Hou Pu directions in advance should
Power muscle passes through below the presstressed reinforcing steel of Xian Pu directions at this point.
Beneficial effect
A kind of cast-in-place unbonded prestressed concrete floor slabs two dimension prestressing muscle laying method provided by the invention, passes through drawing
The laying order of presstressed reinforcing steel is intuitively demonstrated by, is easily grasped by operator, speed of application is fast, solves cast-in-place soap-free emulsion polymeization
The construction difficult problem of double prestressed concrete plate, it is ensured that two dimension prestressing muscle Spatial Cable net accurate positioning, ensure that construction speed
And construction quality.
Brief description of the drawings
Accompanying drawing 1 is that the plane of the two dimension prestressing muscle of the embodiment of the present invention lays schematic diagram.
Accompanying drawing 2 is the unbonded prestressed concrete floor slabs horizontal cross-sectional view of the embodiment of the present invention.
Accompanying drawing 3 is the unbonded prestressed concrete floor slabs vertical direction profile of the embodiment of the present invention.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
Embodiment
As shown in Figure 1, the first step first draws two dimension prestressing muscle plane lay figure, provides the plane of every presstressed reinforcing steel
Position, overlying relation of the two dimension prestressing muscle in intersection is then calculated, and black circle is marked in plan view
Show, represent that the vertical coordinate of the presstressed reinforcing steel in Hou Pu directions at this point is less than the presstressed reinforcing steel in Xian Pu directions.
After the completion of second step treats the placing of reinforcement colligation of floor bottom and presstressed reinforcing steel support reinforcement installation, it is true to lay figure by plane
Fixed laying order, the unbonded prestressing tendon that span centre is located to lower row direction lay in template, then spread one by one again one by one
The presstressed reinforcing steel of other direction is put, the sign of figure is laid according to plane, when the absolute altitude of Hou Pu directions presstressed reinforcing steel is in intersection
When relatively low, Hou Pu directions presstressed reinforcing steel passes through below the presstressed reinforcing steel of Xian Pu directions at this point.
After the completion of 3rd step two dimension prestressing muscle plane is laid, colligation floor slab tops reinforcing bar and prestressed muscle end anchor
Backing plate and spiral bar, then the presstressed reinforcing steel laid is installed in place one by one according to the curve shape of design requirement, and with branch
Frame reinforcing bar is fixed.
The present invention is intuitively demonstrated by the laying order of presstressed reinforcing steel by drawing, is easily grasped by operator, constructs
Speed is fast, solves the construction difficult problem of cast-in-place soap-free emulsion polymeization double prestressed concrete plate, it is ensured that two dimension prestressing muscle Spatial Cable net
Accurate positioning, it ensure that construction speed and construction quality.
Claims (1)
1. a kind of cast-in-place unbonded prestressed concrete floor slabs two dimension prestressing muscle laying method, it is characterised in that it includes following
Several steps：
(1) two dimension prestressing muscle is calculated in the relative space position of intersection, determines laying order and the drafting of presstressed reinforcing steel
Presstressed reinforcing steel plane lays figure；
(2) plane drawn by step (1) lays the laying order that figure determines, two dimension prestressing muscle is laid in into template one by one
It is interior；
(3) after the completion of two dimension prestressing muscle plane is laid, the presstressed reinforcing steel that will have been laid according to the curve shape of design requirement
Installation is in place one by one, and with support reinforcing bar fixation；
It is the presstressed reinforcing steel elder generation that regulation span centre first is located at lower row direction that the step (1), which draws presstressed reinforcing steel plane lay figure,
Paving, the overlying relation of intersection two dimension prestressing muscle is then calculated, and two dimension prestressing muscle is handed in plane lays figure
Indicated at point, represent that the vertical coordinate of the presstressed reinforcing steel in Hou Pu directions at this point is less than the presstressed reinforcing steel in Xian Pu directions；
The laying order that the step (2) is determined by plane lay figure is the unbonded prestressing tendon that span centre is located to lower row direction
Lay one by one in template, then lay the presstressed reinforcing steel of other direction one by one again, according to the sign for laying figure, when Hou Pu directions
The absolute altitude of presstressed reinforcing steel when intersection is less than Xian Pu directions presstressed reinforcing steel absolute altitude, Hou Pu directions presstressed reinforcing steel at this point from
Passed through below the presstressed reinforcing steel of Xian Pu directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510536842.3A CN105155854B (en) | 2015-08-27 | 2015-08-27 | Cast-in-place unbonded prestressed concrete floor slabs two dimension prestressing muscle laying method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510536842.3A CN105155854B (en) | 2015-08-27 | 2015-08-27 | Cast-in-place unbonded prestressed concrete floor slabs two dimension prestressing muscle laying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105155854A CN105155854A (en) | 2015-12-16 |
| CN105155854B true CN105155854B (en) | 2018-04-06 |
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| CN201510536842.3A Active CN105155854B (en) | 2015-08-27 | 2015-08-27 | Cast-in-place unbonded prestressed concrete floor slabs two dimension prestressing muscle laying method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109972790B (en) * | 2019-05-17 | 2024-03-01 | 中铁二十四局集团安徽工程有限公司 | Concrete slab bidirectional curve prestressed reinforcement arrangement form |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116264A (en) * | 1995-02-10 | 1996-02-07 | 中国建筑科学研究院建筑结构研究所 | Large column net prestressed plate frame structure system |
| TWI225116B (en) * | 2000-06-29 | 2004-12-11 | Nippon Oil Corp | Structure reinforcing method, structure-reinforcing reinforcing fiber yarn-containing material, reinforcing structure material and reinforced structure |
| CN1231646C (en) * | 2003-11-14 | 2005-12-14 | 建研科技股份有限公司 | Secondary prestress assembly integral concrete slab and construction method |
| CN204001333U (en) * | 2014-07-17 | 2014-12-10 | 山西省第二建筑工程公司 | Prestressing force two-way ribs composite floor plate |
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