CN103510703B - 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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- CN103510703B CN103510703B CN201310468557.3A CN201310468557A CN103510703B CN 103510703 B CN103510703 B CN 103510703B CN 201310468557 A CN201310468557 A CN 201310468557A CN 103510703 B CN103510703 B CN 103510703B
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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 construction method, especially a kind of variable cross-section concrete arch column construction method, belongs to technical field of building construction.
Background technology
Arch can make stress ratio distribute more equably entire body, 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 overall irregular geometry shape, adopts conventional concrete formwork casting and constructing to realize.Because the construction method of conventional concrete cylinder is adopt steel pipe, flitch, building form to build building of support system, be only suitable for the component of surfacing, regular geometric shapes moulding.And arch post integrally bending, vertical changes of section, and there is chamfering curved surface, the innovation therefore must carrying out construction method can realize.
Retrieval finds; application number be 200910036402.6 Chinese invention patent disclose 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, build spoke type bearing diagonal in direction, the arch virtual center of circle simultaneously; Start to build external mold at the both sides bottom of arch internal mold outside simultaneously, then use pump truck to carry out Bilateral Symmetry and build; The external mold of bottom is up built lower one deck external mold along arch internal mold, is monitored the concrete initial setting time simultaneously, before concrete initial set, carry out building of next layer concrete after having built; Building of external mold is carried out continuously with building of pump truck, until whole storehouse body concrete has been built; Meanwhile, monitor in this process concreting initial setting time and to its timely form removal; After form removal, at concrete surface spraying curing agent, then cover non-woven fabrics and install automatic spraying device additional, carrying out concrete curing.Facts have proved, because the three-dimensional corrugated steel non-deformability bending to definite shape is poor, be therefore only suitable for the perpendicular concrete component in, side smooth for bottom surface and bottom surface, cannot be applied to top is the construction of nonplanar variable cross-section arch post.In addition, application number be 201110450910.6 Chinese invention patent disclose a kind of reinforced concrete arch bridge construction method, the method adopt truss carry out setting up of support system, be suitable for work span bridge arch construction.For arch post, its span is less, if adopt truss to construct, in single span truss, bottom concrete surface cannot reach smoothness requirements, 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 existed for above-mentioned prior art, propose one and properly settle curve support and economical, 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---surveying setting-out draws arch post bottom profiled curve in the plane, then presses contour curve and bend steel pipe, and it is stupefied to make arch master;
Second step, on-site hoisting---set up by the vertical brace framed bent spaced apart be mutually connected by sweep the floor bar and cross bar at the construction field (site), described vertical brace framed bent comprises framed bent and periphery framed bent at the bottom of the height arch corresponding to arch column bottom profile; By arch post width with stull spaced apart by stupefied for one group of arch master connect into the stupefied frame of arch after, be lifted on arch end framed bent fixing;
3rd step, making template---be the upper and lower template of concave shape respectively by arch post upper and lower contour curve sectional making cross section;
4th step, installation form---lower bolster recess is lifted upward according to the order of sequence and is fixed on stupefied frame, assembling reinforcement on lower bolster, then according to arch post thickness thickness setting control member and after lifting recess upper mould down, installation side face die plate is also connected by securing member, forms arch cylinder chamber;
After 5th step, concreting---closure seam place also reinforces, pouring concrete in the arch cylinder chamber that template is formed, stripping and framed bent after maintenance, form variable cross-section concrete arch post.
During above-mentioned 4th step assembling reinforcement, the vertical reinforcing steel bar frame of shape respective change is set by the shape interval in the vertical cross section of each correspondence of arch post, colligation is simultaneously along the normal direction reinforcing steel bar frame that arch post contour curve is tangentially vertical herein, especially vertical reinforcing steel bar frame and normal direction reinforcing steel bar frame form X and intersect, thus vertical and normal direction reinforcing steel bar mechanism combination, complementary intensity, makes arch post have better anti-shear support intensity.
After adopting method of the present invention, not only simplify, practical, properly settle variable cross-section concrete arch post construction difficult problem, and the construction quality that can conscientiously ensure, variable cross-section concrete arch post is made to have desirable support strength, in addition, template is reused after can dismantling, and contributes to reducing 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 the stupefied frame of one embodiment of the invention makes schematic diagram.
Fig. 3 is that schematic diagram set up by the framed bent of one embodiment of the invention.
Fig. 4 is the stupefied frame 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.
Detailed description of the invention
Embodiment one
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, surveying setting-out draws arch post bottom profiled curve in the plane.The bottom profiled curve of arch post can be by cad shift wheel profile to certain distance.Get a control point every 10cm, drawing is marked the coordinate at good each control point in advance, by the setting-out of coordinate control point on wooden model.Connect with curve smoothing between each control point.Press contour curve hydraulic pipe bender again and bend steel pipe, make arch master stupefied 1.
Second step, on-site hoisting---as shown in Figure 2, Figure 3, Figure 4, set up by the vertical brace framed bent 1-3 spaced apart be mutually connected by the bar 1-4 and cross bar 1-2 that sweeps the floor at the construction field (site), the vertical rod of vertical brace framed bent is set to suitable by 0.5m × 0.5m, arch steel pipe master stupefied 1 and vertical rod adopt rotary buckle to be connected.Vertical brace framed bent comprises framed bent and conventional periphery framed bent (see Fig. 3) at the bottom of the height arch corresponding to arch column bottom profile.Namely time stupefied by arch post width 200mm 50mm × 100mm flitch stull 1-1(spaced apart) one group of three arch master stupefied 1 is connected into the stupefied frame of arch (see Fig. 2) after, be lifted on arch end framed bent fixing (see Fig. 4).
3rd step, making template---be the upper and lower template 2 and 3 of concave shape respectively by arch post upper and lower contour curve sectional making cross section.As shown in Figure 5, the main body of upper and lower template 2 or 3 is formed by by the arch substrate 2-1 of arch post upper and lower contour curve segmentation bending and the triangular-section angle brace 2-2 that is fixed on arch sheet both sides, and its cross section is concave shape.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 arcuate substrate two ends are also connected with the steel shown in Fig. 7 and connect template 2-4.
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 frame, 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 the vertical cross section of each correspondence of arch post, colligation is simultaneously along the normal direction reinforcing steel bar frame that arch post contour curve is tangentially vertical herein, especially vertical reinforcing steel bar frame and normal direction reinforcing steel bar frame form X and intersect, thus make arch post have better anti-shear support intensity.Then as shown in Figure 9, according to arch post thickness thickness setting control member and after lifting recess upper mould 3 down, be fixedly connected with by the wooden side template 4 that a pair split bolt 5 is fixing between recess cope match-plate pattern 3 down and corresponding lower bolster 2, form the arch cylinder chamber in cross section shown in Figure 10.
5th step, concreting---see Figure 11, after closure seam place also reinforces, pouring concrete in the arch cylinder chamber that template is formed, 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 bubble-free, 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, with framed bent vertical rod compact siro spinning technology.Secondary stupefied employing 50mm × 100mm flitch of shuttering supporting, fixes with the colligation of steel for steel pipes silk.The template contacted with concrete surface adopts steel and wood composite structure, and arch support curved surface of column part adopts steel work template, and planar section adopts wooden form.Arch post top and bottom are curved surfaces, and adopt steel form as concrete surface, 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 have following remarkable advantage:
1, curved surface member steel form good forming effect, can reach clear-water concrete effect;
2, add back cord stiffening rib after punching block, ensure that the integral rigidity of steel form, avoid size is built in distortion impact on arch post;
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 application claims.
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---surveying setting-out draws arch post bottom profiled curve in the plane, then presses contour curve and bend steel pipe, and it is stupefied to make arch master;
Second step, on-site hoisting---set up by the vertical brace framed bent spaced apart be mutually connected by sweep the floor bar and cross bar at the construction field (site), described vertical brace framed bent comprises framed bent and periphery framed bent at the bottom of the height arch corresponding to arch column bottom profile; By arch post width with stull spaced apart by stupefied for one group of arch master connect into the stupefied frame of arch after, be lifted on arch end framed bent fixing;
3rd step, making template---be the upper and lower template of concave shape respectively by arch post upper and lower contour curve sectional making cross section;
4th step, installation form---lower bolster recess is lifted upward according to the order of sequence and is fixed on stupefied frame, assembling reinforcement on lower bolster, then according to arch post thickness thickness setting control member and after lifting recess upper mould down, installation side face die plate is also connected by securing member, forms arch cylinder chamber;
After 5th step, concreting---closure seam place also reinforces, pouring concrete in the arch cylinder chamber that template is formed, 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 4th step during assembling reinforcement, arrange the vertical reinforcing steel bar frame of shape respective change by the shape interval in the vertical cross section of each correspondence of arch post, colligation is simultaneously along the normal direction reinforcing steel bar frame that arch post contour curve is tangentially vertical herein.
3. variable cross-section concrete arch column construction method according to claim 2, is characterized in that: described vertical reinforcing steel bar frame and normal direction reinforcing steel bar frame form X and intersect.
4. variable cross-section concrete arch column construction method according to claim 3, is characterized in that: described upper and lower template is formed by by the arch substrate of arch post upper and lower contour curve segmentation bending and the triangular-section angle brace that is fixed on arch substrate 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 the connection template being connected adjacent arcuate substrate for being fixed on stiffener under described arch substrate with for transition.
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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| CN201310468557.3A CN103510703B (en) | 2013-10-10 | 2013-10-10 | Method for constructing concrete arch columns with variable cross-sections |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107740539B (en) * | 2017-09-21 | 2023-05-05 | 华侨大学 | Rectangular contour corrugated steel plate concrete composite column |
| 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 |
| 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 |
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 |
| 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 |
-
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 |
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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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