CN104314069B - Side wall reserved steel bar positioning construction method in reverse construction - Google Patents
Side wall reserved steel bar positioning construction method in reverse construction Download PDFInfo
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- CN104314069B CN104314069B CN201410542759.2A CN201410542759A CN104314069B CN 104314069 B CN104314069 B CN 104314069B CN 201410542759 A CN201410542759 A CN 201410542759A CN 104314069 B CN104314069 B CN 104314069B
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- side wall
- steel bar
- reserved steel
- plywood
- sand
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
Abstract
The invention discloses side wall reserved steel bar positioning construction method in a kind of reverse construction, comprise step: the side wall section of backbreaking of backbreaking downwards in the constuction joint place of upper strata side wall; Layer of sand in filling in the side wall section of backbreaking; On middle layer of sand, fix the first multi-plywood, offer the first reserving hole; Reserved steel bar is vertically inserted in the first reserving hole, and the lower end of reserved steel bar is inserted and is fixed in middle layer of sand; Fix one second multi-plywood in the upper end of reserved steel bar, offer the second reserving hole, make the upper end of reserved steel bar be inserted in the second reserving hole, straightening reserved steel bar; The template of upper strata side wall is built between the first multi-plywood and the second multi-plywood, and concreting shaping upper strata side wall.Reserved steel bar is inserted in upper and lower multi-plywood, carries out embedded bar location by the reserving hole that multi-plywood is offered, simple to operate, accurate positioning, avoids the reserved steel bar dislocation of levels side wall, improves side wall construction quality.
Description
Technical field
The present invention relates to the realm of building construction, particularly relate to side wall reserved steel bar positioning construction method in a kind of reverse construction.
Background technology
Consult shown in Fig. 1, existing side wall construction method is respectively when construction upper-lower section side wall 21,22, reserved vertical reinforcement 23,24, after construction completes upper-lower section side wall 21,22, vertical reinforcement 23,24 reserved is up and down docked, side wall linkage section between construction upper-lower section side wall, completes side wall construction.Adopt this kind of construction to there is reserved vertical reinforcement 23,24 up and down easily to misplace, locate inaccurate, thus cause vertical reinforcement docking to have difficulties, affect side wall bar connecting quality, affect side wall quality, also can affect construction speed simultaneously.
Summary of the invention
It is simple that technical problem to be solved by this invention is to provide a kind of construction, improve the accuracy of reserved steel bar location, decrease number of times of doing over again, strong operability, improve construction quality and ensure that construction speed reverse construction in side wall reserved steel bar positioning construction method.
For realizing above-mentioned technique effect, the invention discloses side wall reserved steel bar positioning construction method in a kind of reverse construction, described construction method comprises the following steps:
To backbreak downwards in the constuction joint place of upper strata side wall the formation one side wall section of backbreaking;
In the described side wall section of backbreaking, fill medium sand form layer of sand in described constuction joint;
On described middle layer of sand, fix one first multi-plywood, the first reserving hole is offered in the installation site of corresponding reserved steel bar on described first multi-plywood;
Described reserved steel bar is vertically inserted in described first reserving hole, and the lower end of described reserved steel bar is inserted and is fixed in described middle layer of sand;
One second multi-plywood is fixed in the upper end of described reserved steel bar, the second reserving hole is offered in the installation site of corresponding described reserved steel bar on described second multi-plywood, the upper end of described reserved steel bar is made to be inserted in described second reserving hole, reserved steel bar described in straightening;
The template of described upper strata side wall is built between described first multi-plywood and described second multi-plywood, and concreting shaping described upper strata side wall;
Be excavated to bottom side wall constuction joint, repeat above-mentioned steps construction bottom side wall, leave reserved steel bar in described lower layer side coping;
Remove the middle layer of sand of upper strata side wall, the first multi-plywood and the second multi-plywood, expose the reserved steel bar bottom the side wall of upper strata;
The reserved steel bar of docking upper strata side wall and bottom side wall, the side wall linkage section between construction upper strata side wall and bottom side wall.
Described construction method is further improved and is, fixes described first multi-plywood by following steps on described middle layer of sand:
Flitch is buried underground in described middle layer of sand;
Described first multi-plywood is layed on described flitch;
Adopt nail to clench described first multi-plywood and described flitch, described first multi-plywood is fixed on described middle layer of sand.
Described construction method is further improved and is, fixes described second multi-plywood by following steps in the upper end of described reserved steel bar:
Many reinforcing bar stretchers are set in the upper end of described reserved steel bar, are welded to connect described reinforcing bar stretcher and described reserved steel bar;
Described second multi-plywood fixed by described reinforcing bar stretcher.
Described construction method is further improved and is, further comprising the steps of when constructing described middle layer of sand:
Side wall concrete bed course is built in the bottom of the described side wall section of backbreaking;
Sidepiece in described side wall concrete bed course builds side wall brick fetal membrane by laying bricks or stones, and the side form of the described side wall section of backbreaking of constructing in the inner side of described side wall brick fetal membrane;
Described middle layer of sand is filled in described side wall concrete bed course and described side form;
Build floorslab concrete bed course.
Described construction method is further improved and is, the degree of depth of the described side wall section of backbreaking is 30cm.
Described construction method is further improved and is, is arranged with sleeve outside described reserved steel bar, and there is plug at the two ends of described sleeve respectively shutoff.
Described construction method is further improved and is, adopts rubber belt sealing between described plug and described sleeve.
Described construction method is further improved and is, the aperture of described first reserving hole and described second reserving hole is greater than the external diameter of described sleeve.
The present invention, owing to have employed above technical scheme, makes it have following beneficial effect:
1, the side wall section of backbreaking is excavated downwards at side wall constuction joint place, and layer of sand in filling, to facilitate in layer of sand in reserved steel bar insertion, the lower end of reserved steel bar is fixed, reserved steel bar can not be damaged when also ensureing next step soil excavation simultaneously.
2, up and down multi-plywood is set respectively at reserved steel bar, the installation site of corresponding reserved steel bar respectively on upper and lower multi-plywood correspondence offer reserving hole, be used for locating reserved steel bar.Reserved steel bar is inserted in upper and lower multi-plywood, carries out embedded bar location by the reserving hole that multi-plywood is offered, simple to operate, accurate positioning, with low cost, avoid the reserved steel bar dislocation of levels side wall, improve construction quality and ensure that construction speed.Reserved steel bar in layer of sand, ensures the degree of depth that reserved steel bar inserts and verticality from the reserving hole multilayer gluing Slab inserts.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing side wall reserved steel bar positioning construction method.
Fig. 2 is the schematic diagram of the side wall section of backbreaking of constructing in side wall reserved steel bar positioning construction method in reverse construction of the present invention.
Fig. 3 is the schematic diagram of side wall concrete bed course of constructing in side wall reserved steel bar positioning construction method in reverse construction of the present invention.
Fig. 4 is the schematic diagram of layer of sand in constructing in side wall reserved steel bar positioning construction method in reverse construction of the present invention.
Fig. 5 is the schematic diagram of locating reserved steel bar lower end in reverse construction of the present invention in side wall reserved steel bar positioning construction method.
Fig. 6 is the fixed structure schematic diagram of reserved steel bar lower end.
Fig. 7 is the structural representation of the first multi-plywood.
Fig. 8 is the schematic diagram of locating reserved steel bar upper end in reverse construction of the present invention in side wall reserved steel bar positioning construction method.
Fig. 9 is the fixed structure schematic diagram of reserved steel bar upper end.
Figure 10 builds the concrete schematic diagram of upper strata side wall in side wall reserved steel bar positioning construction method in reverse construction of the present invention.
Figure 11 is the concrete schematic diagram of bottom side wall of constructing in side wall reserved steel bar positioning construction method in reverse construction of the present invention.
Figure 12 be in reverse construction of the present invention in side wall reserved steel bar positioning construction method side wall constructed after schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is further detailed explanation.
In a kind of reverse construction of the present invention, side wall reserved steel bar positioning construction method comprises following construction sequence:
In reverse construction of the present invention, the Specific construction of side wall reserved steel bar positioning construction method is as follows:
1) down backbreak the earthwork in the side wall bounds of upper strata 30cm (namely side wall horizontal construction joint down digs 30cm), forms a side wall section of backbreaking 11, as shown in Figure 2.
2) side wall scope side wall concrete bed course 12 is built in the bottom of the side wall section of backbreaking 11, as shown in Figure 3.
3) sidepiece in side wall concrete bed course 12 builds side wall brick fetal membrane 13 by laying bricks or stones, in the side form 14 of the inner side of the side wall brick fetal membrane 13 construction side wall section of backbreaking 11, medium sand is filled within the scope of the side wall of concrete cushion 12 and side form 14, be filled to side wall horizontal construction joint position, form layer of sand 15 in, the height of middle layer of sand 15 is 30cm, to facilitate in layer of sand in reserved steel bar insertion, build floorslab concrete bed course 121 again, as shown in Figure 4.
4) in middle layer of sand 15, bury the flitch 16 of 5cm × 10cm underground, then on middle layer of sand 15, lay the first multi-plywood 171, by nail 18, first multi-plywood 171 is fixed on flitch 16, as shown in Figure 5 and Figure 6.The installation site of corresponding reserved steel bar 10 is offered one respectively in the both sides of the first multi-plywood 171 and be ranked first reserving hole 181, as shown in Figure 7.Sleeve is tightened by the reserved steel bar 10 of upside side wall, plug worn by sleeve, sleeve and plug encase by blend compounds band, and the aperture 1 ~ 2cm larger than the sleeve diameter on corresponding reserved steel bar of the first reserving hole 181, is convenient to overlap sleeved reserved steel bar and inserts in the first reserving hole.Reserved steel bar 10 is vertically inserted in the first reserving hole 181, and the lower end of reserved steel bar 10 is inserted and is fixed in middle layer of sand 15, the lower end of reserved steel bar 10 is fixed, reserved steel bar 10 can not be damaged when also ensureing next step soil excavation simultaneously.
5) the second multi-plywood 172 is sheathed on reserved steel bar 10 from the upper end of reserved steel bar 10, on the second multi-plywood 172, multiple second reserving hole is also offered in the installation site of corresponding reserved steel bar 10, aperture 1 ~ the 2cm larger than the sleeve diameter on corresponding reserved steel bar of the second reserving hole, being convenient to overlap sleeved reserved steel bar inserts in the second reserving hole, utilize the verticality of upper and lower two-layer multi-plywood adjustment reserved steel bar 10, at the below welded reinforcement stretcher 19 of the second multi-plywood 172 after reserved steel bar 10 straightening, reinforcing bar stretcher 19 is fixed by solder joint 190 with reserved steel bar 10, every 2 meters arrange a reinforcing bar stretcher 19, thus fix the second multi-plywood 172 to design height, as shown in Figure 8 and Figure 9.
6) between the first multi-plywood 171 and the second multi-plywood 172, build the template of upper strata side wall, and concreting shaping upper strata side wall 101 and floorslab concrete 1010, as shown in Figure 10.
7) excavate lower floor's earthwork to bottom side wall constuction joint, repeat above-mentioned steps construction bottom side wall 102, and in bottom side wall 102, adopt the pre-buried reserved steel bar 10 ' in location that uses the same method, as shown in figure 11.
8) concrete cushion 12, floorslab concrete bed course 121, middle layer of sand 15, first multi-plywood 171, second multi-plywood 172 of upside side wall 101 is removed, expose the lower end of the reserved steel bar 10 of upper strata side wall, the reserved steel bar 10 ' of the lower end of the reserved steel bar 10 of upper strata side wall 101 with bottom side wall 102 top is docked, then the side wall linkage section template between levels side wall is built, and build side wall linkage section 103 concrete, complete side wall construction, as shown in figure 12.Adopt reserving hole the positioning up and down reserved steel bar that first, second multi-plywood is offered, guarantee verticality and the positional precision of reserved steel bar, guarantee that the reserved steel bar contraposition of levels side wall is accurate, arrangement of reinforcement dislocation can not be there is, improve arrangement of reinforcement joint quality, improve side wall construction quality and ensure that construction speed.
Below embodiment is to invention has been detailed description by reference to the accompanying drawings, and those skilled in the art can make many variations example to the present invention according to the above description.Thus, some details in embodiment should not form limitation of the invention, the present invention by the scope that defines using appended claims as protection scope of the present invention.
Claims (8)
1. a side wall reserved steel bar positioning construction method in reverse construction, is characterized in that described construction method comprises the following steps:
To backbreak downwards in the constuction joint place of upper strata side wall the formation one side wall section of backbreaking;
In the described side wall section of backbreaking, fill medium sand form layer of sand in described constuction joint;
On described middle layer of sand, fix one first multi-plywood, the first reserving hole is offered in the installation site of corresponding reserved steel bar on described first multi-plywood;
Described reserved steel bar is vertically inserted in described first reserving hole, and the lower end of described reserved steel bar is inserted and is fixed in described middle layer of sand;
One second multi-plywood is fixed in the upper end of described reserved steel bar, the second reserving hole is offered in the installation site of corresponding described reserved steel bar on described second multi-plywood, the upper end of described reserved steel bar is made to be inserted in described second reserving hole, reserved steel bar described in straightening;
The template of described upper strata side wall is built between described first multi-plywood and described second multi-plywood, and concreting shaping described upper strata side wall;
Be excavated to bottom side wall constuction joint, repeat above-mentioned steps construction bottom side wall, leave reserved steel bar in described lower layer side coping;
Remove the middle layer of sand of upper strata side wall, the first multi-plywood and the second multi-plywood, expose the reserved steel bar bottom the side wall of upper strata;
The reserved steel bar of docking upper strata side wall and bottom side wall, the side wall linkage section between construction upper strata side wall and bottom side wall.
2. construction method as claimed in claim 1, is characterized in that on described middle layer of sand, fixing described first multi-plywood by following steps:
Flitch is buried underground in described middle layer of sand;
Described first multi-plywood is layed on described flitch;
Adopt nail to clench described first multi-plywood and described flitch, described first multi-plywood is fixed on described middle layer of sand.
3. construction method as claimed in claim 1, is characterized in that fixing described second multi-plywood by following steps in the upper end of described reserved steel bar:
Many reinforcing bar stretchers are set in the upper end of described reserved steel bar, are welded to connect described reinforcing bar stretcher and described reserved steel bar;
Described second multi-plywood fixed by described reinforcing bar stretcher.
4. construction method as claimed in claim 1, is characterized in that when constructing described middle layer of sand further comprising the steps of:
Side wall concrete bed course is built in the bottom of the described side wall section of backbreaking;
Sidepiece in described side wall concrete bed course builds side wall brick fetal membrane by laying bricks or stones, and the side form of the described side wall section of backbreaking of constructing in the inner side of described side wall brick fetal membrane;
Described middle layer of sand is filled in described side wall concrete bed course and described side form;
Build floorslab concrete bed course.
5. construction method as claimed in claim 1, is characterized in that: the degree of depth of the described side wall section of backbreaking is 30cm.
6. construction method as claimed in claim 1, is characterized in that: be arranged with sleeve outside described reserved steel bar, and there is plug at the two ends of described sleeve respectively shutoff.
7. construction method as claimed in claim 6, is characterized in that: adopt rubber belt sealing between described plug and described sleeve.
8. construction method as claimed in claim 7, is characterized in that: the aperture of described first reserving hole and described second reserving hole is greater than the external diameter of described sleeve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410542759.2A CN104314069B (en) | 2014-10-15 | 2014-10-15 | Side wall reserved steel bar positioning construction method in reverse construction |
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| CN201410542759.2A CN104314069B (en) | 2014-10-15 | 2014-10-15 | Side wall reserved steel bar positioning construction method in reverse construction |
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| CN104314069A CN104314069A (en) | 2015-01-28 |
| CN104314069B true CN104314069B (en) | 2016-03-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107044132B (en) * | 2017-02-22 | 2019-01-01 | 常熟建工建设集团有限公司 | A kind of construction method of quake-resistant safety ground |
| CN109235493A (en) * | 2018-09-04 | 2019-01-18 | 中建八局第三建设有限公司 | Basement beam slab is backbreak and short formwork construction method in a kind of contrary sequence method |
| CN110565692A (en) * | 2019-08-29 | 2019-12-13 | 鞍钢建设集团有限公司 | construction method for steel bar and formwork of reverse construction method construction joint |
| CN110512611A (en) * | 2019-08-30 | 2019-11-29 | 中国二十二冶集团有限公司 | A kind of deep basal pit borehole wall is against operation construction method |
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| CN1563612A (en) * | 2004-03-15 | 2005-01-12 | 中国第二十冶金建设公司 | Construction method for underground structure through half reverse course of action of inverting connection |
| CN101672041A (en) * | 2009-09-18 | 2010-03-17 | 天津二十冶建设有限公司 | Top-down construction method of large underground structure outer wall |
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| CN104060629A (en) * | 2014-07-02 | 2014-09-24 | 中铁十二局集团第七工程有限公司 | Covered top-down excavation subway station overlapped wall construction method and movable side wall formwork jumbo |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6294617A (en) * | 1985-10-18 | 1987-05-01 | Fujita Corp | Reinforcing of outer wall of body using sheathing wall |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563612A (en) * | 2004-03-15 | 2005-01-12 | 中国第二十冶金建设公司 | Construction method for underground structure through half reverse course of action of inverting connection |
| CN101672041A (en) * | 2009-09-18 | 2010-03-17 | 天津二十冶建设有限公司 | Top-down construction method of large underground structure outer wall |
| CN201635090U (en) * | 2010-03-05 | 2010-11-17 | 中国京冶工程技术有限公司厦门分公司 | Wall body steel reinforcing bar positioning structure by using topdwon construction method |
| CN102691301A (en) * | 2012-06-21 | 2012-09-26 | 中国建筑第八工程局有限公司 | Synchronous construction method for envelope enclosure supporting breast beam and main structure wall |
| CN104060629A (en) * | 2014-07-02 | 2014-09-24 | 中铁十二局集团第七工程有限公司 | Covered top-down excavation subway station overlapped wall construction method and movable side wall formwork jumbo |
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| CN104314069A (en) | 2015-01-28 |
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