CN103510703A - Method for constructing concrete arch columns with variable cross-sections - Google Patents
Method for constructing concrete arch columns with variable cross-sections Download PDFInfo
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- CN103510703A CN103510703A CN201310468557.3A CN201310468557A CN103510703A CN 103510703 A CN103510703 A CN 103510703A CN 201310468557 A CN201310468557 A CN 201310468557A CN 103510703 A CN103510703 A CN 103510703A
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Abstract
The invention relates to a method for constructing concrete arch columns with variable cross-sections, and belongs to the technical field of building construction. The method comprises the steps of manufacturing a main edge, conducting site hoisting, manufacturing a formwork, installing the formwork and casting concrete. The casting-formed concrete arch columns with the variable cross-sections are obtained. After the method is adopted, hard things are simplified, the method is practicable, well solves the difficult problem of the construction of the concrete arch columns with the variable cross-sections, can practically ensure the construction quality, and enables the concrete arch columns with the variable cross-sections to have the ideal supporting strength, in addition, the formwork can be disassembled to be reused, and the method is beneficial to reducing the construction cost.
Description
Technical field
The present invention relates to a kind of job practices, especially a kind of variable cross-section concrete arch column construction method, belongs to technical field of building construction.
Background technology
Arch can make the stress ratio entire body that distributes more equably, avoids concentrating on central authorities, therefore becomes the common structure in architectural leap space.For a long time, this braced structures generally adopts the construction process of prefabricated shaping to realize.
Concrete arch post is a kind of Novel support structure design that modern building building occurs, due to its whole irregular geometry shape, adopts conventional concrete formwork casting and constructing to realize.Because the job practices of conventional concrete column, for adopting steel pipe, flitch, building form to build building of support system, is only suitable for the member of surfacing, regular geometric shapes moulding.And arch post integrally bending, vertical changes of section, and thering is chamfering curved surface, the innovation that therefore must carry out job practices can realize.
Retrieval is found; application number is that 200910036402.6 Chinese invention patent has disclosed a kind of wide span arched house concrete construction process; first build internal mold bracing frame, then adopt three-dimensional corrugated steel to build arch internal mold, in the virtual center of circle of arch direction, build spoke type bearing diagonal simultaneously; Both sides bottom in arch internal mold outside starts to build external mold simultaneously, then uses pump truck to carry out Bilateral Symmetry and builds; After the external mold of bottom has been built, along arch internal mold, up build lower one deck external mold, monitor the concrete initial setting time simultaneously, before concrete initial set, carry out building of next layer concrete; Building with building continuously of pump truck of external mold carried out, until whole storehouse body concrete has been built; Meanwhile, in this process, monitor the initial setting time of concreting and to its timely form removal; After form removal, at concrete surface spraying curing agent, then cover nonwoven and install automatic spraying device additional, carrying out concrete curing.Facts have proved, owing to bending to, the three-dimensional corrugated steel non-deformability of definite shape is poor, is therefore only suitable for the perpendicular concrete component in, side smooth for bottom surface and bottom surface, and cannot be applied to top is that nonplanar variable cross-section arch post is constructed.In addition, the Chinese invention patent that application number is 201110450910.6 discloses a kind of reinforced concrete arch bridge construction method, and the method adopts truss to carry out setting up of support system, is suitable for the construction of work span bridge arch.For arch post, its span is less, if adopt truss to construct, in single span truss, bottom concrete surface cannot reach smoothness requirement, and it is time-consuming, with high costs to adopt truss to carry out setting up of support system.
Summary of the invention
The object of the invention is to: the shortcoming existing for above-mentioned prior art, proposes a kind ofly to properly settle that curved surface supports and cost economy, practicable variable cross-section concrete arch column construction method.
In order to reach above object, variable cross-section concrete arch column construction method of the present invention comprises following key step:
The first step, make main stupefied---measure in the plane unwrapping wire and draw arch post bottom profiled curve, then press contour curve and bend steel pipe, make arch master stupefied;
Second step, on-site hoisting---set up at the construction field (site) by the vertical brace framed bent spaced apart being mutually connected by sweep the floor bar and cross bar, described vertical brace framed bent comprises that height encircles end framed bent and periphery framed bent accordingly with arch column bottom profile; By arch post width, with stull spaced apart, connect into after stupefied of arch one group of arch master is stupefied, be lifted on arch end framed bent fixing;
The 3rd step, making template---by the upper and lower contour curve sectional making of arch post cross section, be respectively the upper and lower template of concave shape;
The 4th step, installation form---lower bolster recess is lifted and is fixed on stupefied according to the order of sequence upward, assembling reinforcement on lower bolster, then according to arch post thickness, THICKNESS CONTROL part is set and lifts after recess upper mould down, installation side face die plate is also connected by securing member, forms arch cylinder chamber;
After the 5th step, concreting---sealing seam crossing reinforcing, pouring concrete in the arch cylinder chamber forming in template, stripping and framed bent after maintenance, form variable cross-section concrete arch post.
During above-mentioned the 4th step assembling reinforcement, the vertical reinforcing steel bar frame of shape respective change is set by the shape interval in each corresponding vertical cross section of arch post, the edge of colligation is simultaneously the tangential vertical normal direction reinforcing steel bar frame of arch post contour curve herein, especially vertical reinforcing steel bar frame forms X with normal direction reinforcing steel bar frame and intersects, thereby vertical and normal direction reinforcing steel bar mechanism organically combines, complementary intensity, makes arch post have better anti-shear support intensity.
Adopt after method of the present invention, not only simplify, practical, properly settled variable cross-section concrete arch post construction difficult problem, and the construction quality that can conscientiously guarantee, make variable cross-section concrete arch post there is desirable support strength, in addition, template is reused after can dismantling, and contributes to reduce construction cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the stupefied making schematic diagram of one embodiment of the invention master.
Fig. 2 is that stupefied of one embodiment of the invention makes schematic diagram.
Fig. 3 is that the framed bent of one embodiment of the invention is set up schematic diagram.
Fig. 4 is stupefied lifting schematic diagram of one embodiment of the invention.
Fig. 5 is the upper and lower formwork structure schematic diagram of one embodiment of the invention.
Fig. 6 is the stiffener structural representation of one embodiment of the invention.
Fig. 7 is the connection mode plated construction schematic diagram of one embodiment of the invention.
Fig. 8 is the lower bolster scheme of installation of one embodiment of the invention.
Fig. 9 is the cope match-plate pattern scheme of installation of one embodiment of the invention.
Figure 10 is the arch cylinder chamber cross section structure schematic diagram of one embodiment of the invention.
Figure 11 is the arch post formwork for placing sealing and reinforcing schematic diagram of one embodiment of the invention.
The specific embodiment
Embodiment mono-
The variable cross-section concrete arch column construction method concrete steps of the present embodiment are as follows.
Master is stupefied for the first step, making---and as shown in Figure 1, measure in the plane unwrapping wire and draw arch post bottom profiled curve.Can be by cad shift wheel profile to certain distance the bottom profiled curve of arch post.Every 10cm Qu Yi control point, the coordinate at Biao Haoge control point in advance on drawing, puts setting-out on wooden model by coordinate control.Between each control point, with curve smoothing, connect.Press again contour curve and bend steel pipe with hydraulic pipe bender, make arch master stupefied 1.
Second step, on-site hoisting---as shown in Figure 2, Figure 3, Figure 4, set up at the construction field (site) by the vertical brace framed bent 1-3 spaced apart being mutually connected by sweep the floor bar 1-4 and cross bar 1-2, the vertical rod of vertical brace framed bent is set to suitable by 0.5m * 0.5m, arch steel pipe master stupefied 1 adopts rotary buckle to be connected with vertical rod.Vertical brace framed bent comprises that height encircles end framed bent and conventional periphery framed bent (referring to Fig. 3) accordingly with arch column bottom profile.Time stupefied with 200mm 50mm * 100mm flitch stull 1-1(spaced apart by arch post width) one group of three arch master stupefied 1 is connected into after arch stupefied (referring to Fig. 2), be lifted on arch end framed bent fixing (referring to Fig. 4).
The 3rd step, making template---by the upper and lower contour curve sectional making of arch post cross section, be respectively the upper and lower template 2 and 3 of concave shape.As shown in Figure 5, upper and lower template 2 or 3 main body are concave shape by forming ，Qi cross section by the arch substrate 2-1 of the upper and lower contour curve segmentation of arch post bending and the triangular-section angle brace 2-2 that is fixed on arch sheet both sides.In order to strengthen rigidity, arch substrate lower back portion is fixed with the steel stiffener 2-3 shown in Fig. 6, and for ease of stripping, adjacent arch substrate two ends are also connected with the steel shown in Fig. 7 and connect template 2-4.
The 4th step, installation form---as shown in Figure 8, recess lower bolster 2 is upward lifted according to the order of sequence and is fixed on stupefied above, assembling reinforcement on lower bolster 2; During assembling reinforcement, the vertical reinforcing steel bar frame of shape respective change is set by the shape interval in each corresponding vertical cross section of arch post, the edge of colligation is simultaneously the tangential vertical normal direction reinforcing steel bar frame of arch post contour curve herein, especially vertical reinforcing steel bar frame forms X with normal direction reinforcing steel bar frame and intersects, thereby makes arch post have better anti-shear support intensity.Then as shown in Figure 9, according to arch post thickness, THICKNESS CONTROL part is set and lifts after recess upper mould 3 down, between recess cope match-plate pattern 3 down and corresponding lower bolster 2, by the fixing wooden side template 4 of a pair of split bolt 5, be fixedly connected with, form the arch cylinder chamber in cross section shown in Figure 10.
The 5th step, concreting---referring to Figure 11, after sealing seam crossing reinforcing, pouring concrete in the arch cylinder chamber forming in template, stripping and framed bent after maintenance, form variable cross-section concrete arch post.In casting process, the duration of vibrating should make concrete surface produce laitance, and without bubble, till not sinking, vibration compacting is answered in concreting.
In a word, according to arched concrete support column feature in irregular shape, the present embodiment adopts unconventional mold method to construct.On-deformable bended pipe after the stupefied employing of template master is fixing, is closely connected with framed bent vertical rod.Inferior stupefied employing 50mm * 100mm flitch of shuttering supporting, fixes with the colligation of steel for steel pipes silk.The template contacting with concrete surface adopts steel and wood composite structure, and arch support curved surface of column partly adopts steel work template, and planar section adopts wooden form.Arch post top and bottom are curved surfaces, adopt steel form as concrete surface, and in order to ensure installability and the operability of steel form, steel form is divided into some segments, with bolts between every section of steel form.Arch post side is plane, adopts wooden form economic and practical, uses split bolt reinforcement by connection.
Facts have proved, adopt the method for the present embodiment to there is following remarkable advantage:
1, curved surface member steel form good forming effect, can reach clear-water concrete effect;
2, after punching block, add back cord stiffening rib, guaranteed the integral rigidity of steel form, avoided distortion arch post to be built to the impact of size;
3, arch post side is plane, adopts wooden form to carry out the connection of support system, is not only conducive to saving construction cost, and is convenient to utilize conventional Screw arbor with nut at both-ends to carry out reinforcement by connection;
4, arch post steel form can reuse.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (6)
1. a variable cross-section concrete arch column construction method, is characterized in that comprising following key step:
The first step, make main stupefied---measure in the plane unwrapping wire and draw arch post bottom profiled curve, then press contour curve and bend steel pipe, make arch master stupefied;
Second step, on-site hoisting---set up at the construction field (site) by the vertical brace framed bent spaced apart being mutually connected by sweep the floor bar and cross bar, described vertical brace framed bent comprises that height encircles end framed bent and periphery framed bent accordingly with arch column bottom profile; By arch post width, with stull spaced apart, connect into after stupefied of arch one group of arch master is stupefied, be lifted on arch end framed bent fixing;
The 3rd step, making template---by the upper and lower contour curve sectional making of arch post cross section, be respectively the upper and lower template of concave shape;
The 4th step, installation form---lower bolster recess is lifted and is fixed on stupefied according to the order of sequence upward, assembling reinforcement on lower bolster, then according to arch post thickness, THICKNESS CONTROL part is set and lifts after recess upper mould down, installation side face die plate is also connected by securing member, forms arch cylinder chamber;
After the 5th step, concreting---sealing seam crossing reinforcing, pouring concrete in the arch cylinder chamber forming in template, stripping and framed bent after maintenance, form variable cross-section concrete arch post.
2. variable cross-section concrete arch column construction method according to claim 1, it is characterized in that: in described the 4th step during assembling reinforcement, the vertical reinforcing steel bar frame of shape respective change is set by the shape interval in each corresponding vertical cross section of arch post, and the edge of colligation is simultaneously the tangential vertical normal direction reinforcing steel bar frame of arch post contour curve herein.
3. variable cross-section concrete arch column construction method according to claim 2, is characterized in that: described vertical reinforcing steel bar frame forms X with normal direction reinforcing steel bar frame and intersects.
4. variable cross-section concrete arch column construction method according to claim 3, is characterized in that: described upper and lower template is by forming by the arch substrate of the upper and lower contour curve segmentation of arch post bending and the triangular-section angle brace that is fixed on arch sheet both sides.
5. variable cross-section concrete arch column construction method according to claim 4, is characterized in that: described upper and lower template also comprises for being fixed on the stiffener and the connection template that is connected adjacent arch substrate for transition under described arch substrate.
6. variable cross-section concrete arch column construction method according to claim 5, is characterized in that: described arch master is stupefied adopts rotary buckle to be connected with the vertical rod of framed bent.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740539A (en) * | 2017-09-21 | 2018-02-27 | 华侨大学 | A kind of rectangular profile corrugated steel concrete combination column |
| CN109184196A (en) * | 2018-10-09 | 2019-01-11 | 中国五冶集团有限公司 | A kind of formwork erecting structure that oblique arch face structural concrete pours and method |
| CN110630009A (en) * | 2019-09-17 | 2019-12-31 | 中国化学工程第六建设有限公司 | Arc concrete structure formwork reinforcing construction method |
Citations (5)
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| CN101457551A (en) * | 2009-01-05 | 2009-06-17 | 中国人民解放军***空军工程建设局 | Wide span arched house concrete construction process |
| CN102493360A (en) * | 2011-12-29 | 2012-06-13 | 浙江大东吴集团建设有限公司 | Reinforced concrete arch bridge construction method |
| CN102587496A (en) * | 2012-04-10 | 2012-07-18 | 韦灼彬 | Spatial combined arched shell structure with two layers of cylindrical surfaces |
| RU2485243C1 (en) * | 2011-12-23 | 2013-06-20 | Открытое акционерное общество по проектированию строительства мостов "Институт Гипростроймост" | Arched span |
| CN203144881U (en) * | 2013-05-31 | 2013-08-21 | 中建三局第三建设工程有限责任公司 | Large-span stone arch bridge arch ring supporting system |
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2013
- 2013-10-10 CN CN201310468557.3A patent/CN103510703B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457551A (en) * | 2009-01-05 | 2009-06-17 | 中国人民解放军***空军工程建设局 | Wide span arched house concrete construction process |
| RU2485243C1 (en) * | 2011-12-23 | 2013-06-20 | Открытое акционерное общество по проектированию строительства мостов "Институт Гипростроймост" | Arched span |
| CN102493360A (en) * | 2011-12-29 | 2012-06-13 | 浙江大东吴集团建设有限公司 | Reinforced concrete arch bridge construction method |
| CN102587496A (en) * | 2012-04-10 | 2012-07-18 | 韦灼彬 | Spatial combined arched shell structure with two layers of cylindrical surfaces |
| CN203144881U (en) * | 2013-05-31 | 2013-08-21 | 中建三局第三建设工程有限责任公司 | Large-span stone arch bridge arch ring supporting system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740539A (en) * | 2017-09-21 | 2018-02-27 | 华侨大学 | A kind of rectangular profile corrugated steel concrete combination column |
| CN109184196A (en) * | 2018-10-09 | 2019-01-11 | 中国五冶集团有限公司 | A kind of formwork erecting structure that oblique arch face structural concrete pours and method |
| CN109184196B (en) * | 2018-10-09 | 2023-10-13 | 中国五冶集团有限公司 | Formwork structure and method for concrete pouring of oblique arch surface structure |
| CN110630009A (en) * | 2019-09-17 | 2019-12-31 | 中国化学工程第六建设有限公司 | Arc concrete structure formwork reinforcing construction method |
| CN110630009B (en) * | 2019-09-17 | 2021-07-02 | 中国化学工程第六建设有限公司 | Arc concrete structure formwork reinforcing construction method |
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| CN103510703B (en) | 2015-06-03 |
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Inventor after: Tang Bing Inventor after: Wang Aijun Inventor after: Shi Gaocheng Inventor after: Zhang Qifeng Inventor after: Zhou Qitai Inventor before: Wu Biqiao Inventor before: Tang Bing Inventor before: Zhu Guoliang Inventor before: Wang Aijun Inventor before: Shi Gaocheng |
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Free format text: CORRECT: INVENTOR; FROM: WU BIQIAO TANG BING ZHU GUOLIANG WANG AIJUN SHI GAOCHENG TO: TANG BING WANG AIJUN SHI GAOCHENG ZHANG QIFENG ZHOU QITAI |
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