CN101314960B - Pouring construction method of concrete grounding arch - Google Patents
Pouring construction method of concrete grounding arch Download PDFInfo
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- CN101314960B CN101314960B CN200810063594A CN200810063594A CN101314960B CN 101314960 B CN101314960 B CN 101314960B CN 200810063594 A CN200810063594 A CN 200810063594A CN 200810063594 A CN200810063594 A CN 200810063594A CN 101314960 B CN101314960 B CN 101314960B
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Abstract
The invention discloses a pouring construction method of a concrete floor-type arch, and a special operating platform. The construction steps and the structure are as follows: step 1, binding and installing a reinforced bar framework (9) with an arch-shaped structure; step 2, installing and subdividing an external framework (2), and reserving an opening (3) used for pouring the concrete; step 3, arranging a cantilevered operating platform which is positioned at the lower point of a first opening (3) from down to up and extended along the axial direction of the floor-type arch; step 4, pouringthe construction through the opening (3), removing the cantilevered operating platform when the concrete is poured to the height of the lower point of the opening (3), arranging a cantilevered operating platform which is positioned at the lower point closely adjacent to an previous opening (3) and extended along the axial direction of the floor-type arch, and well installing a prefabricated and shaped external framework at the point along the axial direction of the floor-type arch and extended to the first opening (3) at the other end from one end; and step 5, repeating the step 4. The pouringconstruction method has the advantages of simplified construction process, improved construction efficiency, reduced construction intensity, reduced construction cycle and saved construction material.
Description
Technical field
The present invention relates to the job practices in a kind of civil engineering, specifically is a kind of casting construction method that is applicable to the concrete grounding arch of large span, high vector, the thick arch bar of overlength.
Background technology
Concrete structure in civil engineering is owing to have economic, practical and advantage such as draw materials easily, still extensive use so far.Especially some special constructions, for example safety guard of nuclear power plant etc. is that other structural meterialss are irreplaceable; And some industry and public building, because the requirement of function and building, adopting the concrete arch structure of thick arch bar in longspan structure also is a kind of good form of structure, for example buildings such as conference and exhibition center, market, factory building and warehouse are a large amount of adopts, and especially hangar adopts the thickness of arch bar to surpass the arch structure of 800mm especially.
Big in view of above-mentioned grounding arch structural span, arch bar is thick, especially its rise height, so behind support bracket, inner formword, cage of reinforcement and the exterior sheathing of mounting arch structure, the concrete placement of grounding arch need successively be built working packway (be operating platform, comprise scaffold) from arch place, limit.The then framing setting of above-mentioned exterior sheathing, between adjacent exterior sheathing, be reserved with the opening that disturbing concrete is used weekly, its A/F is generally about 500mm, and this opening extends axially the other end that promptly axially extends to grounding arch to the arch two ends from an end of grounding arch along grounding arch.The general structure of its job practices and packway is: elder generation is from the most subaerial height along mounted exterior sheathing surface longitudinal and laterally set up steel pipe scaffold, the cross bar of scaffold and vertical rod major part fall within on the exterior sheathing, be paved with scaffold floor on the cross bar that the level of each opening part is intersected, then from the opening part disturbing concrete, when treating casting and compacting of concrete, will extend axially to this opening part of arch two ends along grounding arch and install exterior sheathing to the height of the lower of exterior sheathing opening; Continue upwards to build construction from this layer again and use packway, promptly repeat aforesaid operations and structure, smash to dome portions until concrete the watering of arch structure, its casting and constructing is finished.Carry out follow-up maintenance again, remove the exterior sheathing of arch structure and inner formword in good time until support bracket.
The casting construction method of the concrete grounding arch of above-mentioned prior art and special-purpose construction packway, its complex structure, and need take materials such as a large amount of steel pipes and fastener, its material deterioration inside is big, material cost is high, and the work progress complexity, the difficulty of construction height, constructor's labour intensity is big, efficiency of construction is low, long construction period, its cost of labor height.
Summary of the invention
The technical problem to be solved in the present invention is that a kind of casting construction method that can simplify work progress, raising efficiency of construction, reduce the concrete grounding arch of construction intensity, shortening construction period, saving construction material is provided.
Technical solution of the present invention is, a kind of casting construction method of concrete grounding arch is provided, and it comprises following construction sequence:
The cage of reinforcement of 1., colligation mounting arch structure;
2., the exterior sheathing that framing is provided with is installed, between the adjacent exterior sheathing of span direction, reserve disturbing concrete with and extend axially to encircleing openings at two ends along grounding arch;
3., the lower at from bottom to top first opening is provided with along the axially extended overhanging type operating platform of grounding arch;
4., at the 3. described opening part disturbing concrete of step, when treating casting and compacting of concrete to the height of exterior sheathing opening part lower, remove the overhanging type operating platform, and the lower of an opening is provided with along the axially extended overhanging type operating platform of grounding arch on the next-door neighbour, with the 3. described exterior sheathing that installs prefabricated typing to arch openings at two ends place that extends axially along grounding arch of step;
5., repeating step operation 4. repeatedly, smash to dome portions until concrete the watering of whole arch structures.
3. step refers to 4. described the setting along the axially extended overhanging type operating platform of grounding arch of step, the constructor stands on the exterior sheathing, along grounding arch many steel pipes are stretched in the cage of reinforcement and are installed in the pressure that compresses exterior sheathing with fastener and hold on the steel pipe, described many steel pipes along arch axis to arranging and horizontal and the steel pipe axis is vertical mutually with the grounding arch axis, it is outer and constitute many and choose pipe to make the steel pipe tail end stretch out exterior sheathing, and also making many, to choose pipe parallel each other and on same horizontal plane; Choose the Guan Shangyong fastener at many again and install many and extend axially to the steel pipe at arch two ends along grounding arch and to constitute tube axial, and make many tube axials parallel each other; The polylith scaffold floor is installed on many tube axials again, and described scaffold floor extends axially to the arch two ends along grounding arch.
The 4. described dismounting overhanging type of step operating platform refers to that the constructor stands on the exterior sheathing, removes earlier the polylith scaffold floor, unclamps fastener again and removes many tube axials, unclamps fastener again and then removes many and choose pipe.
Described step is 1.～5. for to carry out along the synchronous symmetry in the grounding arch left and right sides, until whole arch structures concrete water to smash in dome portions close up.
The casting construction method of concrete grounding arch of the present invention compared with prior art has following remarkable advantage and beneficial effect:
Because the casting construction method of concrete grounding arch of the present invention adopts the overhanging type operating platform of detachable turnover, and this operating platform is directly installed on the arch structure, do not need successively to build the construction packway of mainly forming by scaffold from ground along arch limit exterior sheathing, behind the casting complete, encorbelment steel pipe and the tube axial that also only need to remove the trick plate, unclamp snapping get final product, do not need successively to dismantle the construction scaffold, therefore, both save construction materials such as a large amount of steel pipes and fastener, reduced material cost significantly; Make operating platform simple in structure again, and greatly simplified work progress, increased substantially efficiency of construction, reduced difficulty of construction, constructor's labour intensity and cost of labor significantly, reduced construction period significantly.
Description of drawings
Fig. 1 is the structural representation that the casting and constructing of the concrete grounding arch of prior art is used packway.
Fig. 2 is the structural representation of the special operating platform executed of the cast of concrete grounding arch of the present invention.
Fig. 3 is that the special operating platform of casting and constructing of concrete grounding arch of the present invention is along span direction broken section structural representation.
Shown in the figure
The parts of prior art: 11, support bracket, 12, exterior sheathing, 13, opening, 14, the scaffold of packway;
Parts of the present invention: 1, support bracket, 2, exterior sheathing, 3, opening, 4, choose pipe, 5, tube axial, 6, scaffold floor, 7, fastener, 8, press and hold steel pipe, 9, the cage of reinforcement of arch structure.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the facility that the concrete grounding arch casting and constructing of prior art is used comprises the support bracket 11 of arch structure, the inner formword (not shown), cage of reinforcement (not shown) and exterior sheathing 12. described exterior sheathing framings are provided with, between the adjacent exterior sheathing 12 of span direction, be reserved with the opening 13 that disturbing concrete is used, its A/F is generally about 500mm, this opening 13 extends axially to the arch two ends along grounding arch, promptly axially extending to the other end of grounding arch from an end of grounding arch. the operating platform that its casting and constructing is used adopts the packway structure, promptly successively having built construction from arch edge exterior sheathing 12 is scaffold 14 with the packway support, repave the scaffold floor (not shown). and the casting construction method of the concrete grounding arch of prior art has been introduced in background technology, does not repeat them here.
As Fig. 2, shown in Figure 3, the casting construction method of concrete grounding arch of the present invention also comprises the support bracket 1 and the inner formword (not shown) of mounting arch structure, promptly also comprises support bracket 1 and inner formword in its constructing operation facility.Also have, the casting construction method of concrete grounding arch of the present invention is smash after dome portions is closed up whole concrete watering of arch structure, be after casting and constructing is finished, also comprise carrying out follow-up maintenance, removing the exterior sheathing and the steps such as inner formword and support bracket thereof of arch structure in good time of prior art.But because these are all in protection scope of the present invention, so, not mentioned arriving in the summary of the invention and the following specific embodiment.
The casting construction method of concrete grounding arch of the present invention, it comprises following construction sequence:
The cage of reinforcement 9 of 1., colligation mounting arch structure;
2., the exterior sheathing 2 that framing is provided with is installed, between the adjacent exterior sheathing 2 of span direction, reserve disturbing concrete with and extend axially to encircleing openings at two ends 3 along grounding arch;
3., the lower at from bottom to top first opening 3 is provided with along the axially extended overhanging type operating platform of grounding arch;
The described setting along the axially extended overhanging type operating platform of grounding arch refers to, the constructor stands on the exterior sheathing 2, many steel pipes are stretched in the cage of reinforcement 1 and be installed in the pressure that compresses exterior sheathing 2 along grounding arch and hold on the steel pipe 8 with fastener, described many steel pipes along arch axis to arranging and horizontal and the steel pipe axis is vertical mutually with the grounding arch axis, it is outer and constitute many and choose pipe 4 to make the steel pipe tail end stretch out exterior sheathing 2, and also making many, to choose pipe 4 parallel each other and on same horizontal plane; Choose on the pipe 4 at many again and install many with fastener 7 and extend axially steel pipe formation tube axial 5 (tube axial 5 is two among the figure), and make many tube axials 5 parallel each other to the arch two ends along grounding arch; Polylith scaffold floor 6 is installed on many tube axials 5 again as is used steel wire lashing polylith bamboo splint, described scaffold floor 6 extends axially to the arch two ends along grounding arch.
4., at the 3. described opening 3 place's disturbing concretes of step, when treating casting and compacting of concrete to the height of the lower of exterior sheathing 2 openings 3, remove the overhanging type operating platform, and the lower of an opening 3 is provided with along the axially extended overhanging type operating platform of grounding arch on the next-door neighbour, with the 3. described exterior sheathing that installs prefabricated typing to arch openings at two ends 3 places that extends axially along grounding arch of step.
Described dismounting overhanging type operating platform refers to that the constructor stands on the exterior sheathing 2, removes earlier polylith scaffold floor 6, unclamps fastener 7 again and removes many tube axials 5, unclamps fastener 7 again and then removes many and choose pipe 4.
5., repeating step operation 4. repeatedly, be provided with along the axially extended overhanging type operating platform of grounding arch as lower at from bottom to top second opening 3; From these opening 3 disturbing concretes, when treating casting and compacting of concrete to the height of the lower of opening 3, remove this overhanging type operating platform, and the lower of an opening 3 is provided with along the axially extended overhanging type operating platform of grounding arch on the next-door neighbour, with the described exterior sheathing that installs prefabricated typing to arch openings at two ends 3 second openings 3 places that extends axially along grounding arch; Smash to dome portions until concrete the watering of whole arch structures.
Described step is 1.～5. for to carry out along the synchronous symmetry in the grounding arch left and right sides, until whole arch structures concrete water to smash in dome portions close up.
The special operating platform of the casting and constructing of concrete grounding arch of the present invention, it comprises the cage of reinforcement 9 (comprising steel bar stress and distribution reinforcement) of arch structure and the exterior sheathing 2 that framing is provided with, between the adjacent exterior sheathing 2 of span direction, be reserved with disturbing concrete with and extend axially to arch openings at two ends 3 along grounding arch, at the lower of opening 3 overhanging type operating platform along the axially extended detachable turnover of grounding arch is installed; The state of the detachable turnover of its overhanging type operating platform is: the lower at each opening 3 sets gradually and is removed behind each cast (smashing) concrete from bottom to up.
The lower of described opening 3 is equipped with along the overhanging type operating platform of the axially extended detachable turnover of grounding arch and refers to, axially having many steel pipes to stretch in the cage of reinforcement 9 and be installed in the pressure that compresses exterior sheathing 2 by fastener 7 along grounding arch holds on the steel pipe 8, described many steel pipes along arch axis to arranging and horizontal and the steel pipe axis is vertical mutually with the grounding arch axis, it is outer and constitute many and choose pipe 4 that the steel pipe tail end stretches out exterior sheathing 2, and many to choose pipe 4 parallel each other and on same horizontal plane; Choose on the pipe 4 for many and be equipped with many by fastener 7 and extend axially to the tube axial 5 that constitutes of steel pipe at arch two ends along grounding arch, many tube axials 5 are parallel each other; On the many tube axials 5 polylith scaffold floor 6 is installed, described scaffold floor 6 extends axially to the arch two ends along grounding arch.
Below only just preferred embodiment of the present invention be described, but can not be interpreted as it is restriction to claim.The present invention not only is confined to above embodiment, and its concrete construction sequence and concrete structure allow variation, as: 1.～5. described step can not carry out along the synchronous symmetry in the grounding arch left and right sides yet; The axis of choosing pipe of described removable overhanging type operating platform and grounding arch axis also allow not strict vertical mutually, choose between the pipe and also can not be strict with level for described many, choose pipe also permission is not strict parallel each other for many; Described many tube axials also allow not strict parallel each other; Or the like.All various variations of being done in the protection domain of the inventive method independent claims and facility independent claims are all in protection scope of the present invention.
Claims (2)
1. the casting construction method of a concrete grounding arch, it comprises following construction sequence:
The cage of reinforcement (9) of 1., colligation mounting arch structure;
2., the exterior sheathing (2) that framing is provided with is installed, between the adjacent exterior sheathing of span direction (2), reserve disturbing concrete with and extend axially to encircleing openings at two ends (3) along grounding arch;
3., the lower at from bottom to top first opening (3) is provided with along the axially extended overhanging type operating platform of grounding arch;
4., locate disturbing concrete at the 3. described opening of step (3), when treating casting and compacting of concrete to the height of exterior sheathing (2) opening part lower, remove the overhanging type operating platform, and the lower of an opening (3) is provided with along the axially extended overhanging type operating platform of grounding arch on the next-door neighbour, with the 3. described exterior sheathing of locating to install prefabricated typing to arch openings at two ends (3) that extends axially along grounding arch of step;
5., repeating step operation 4. repeatedly, smash to dome portions until concrete the watering of whole arch structures;
3. step refers to 4. described the setting along the axially extended overhanging type operating platform of grounding arch of step, the constructor stands on the exterior sheathing (2), along grounding arch many steel pipes are stretched in the cage of reinforcement (1) and are installed in the pressure that compresses exterior sheathing (2) with fastener and hold on the steel pipe (8), described many steel pipes along arch axis to arranging and horizontal and the steel pipe axis is vertical mutually with the grounding arch axis, it is outer and constitute many and choose pipe (4) to make the steel pipe tail end stretch out exterior sheathing (2), and also making many, to choose pipe (4) parallel each other and on same horizontal plane; Choose pipe (4) at many again and go up and to install many with fastener (7) and extend axially steel pipe formation tube axial (5), and make many tube axials (5) parallel each other to the arch two ends along grounding arch; Go up at many tube axials (5) polylith scaffold floor (6) is installed, described scaffold floor (6) extends axially to the arch two ends along grounding arch;
The 4. described dismounting overhanging type of step operating platform refers to that the constructor stands on the exterior sheathing (2), removes earlier polylith scaffold floor (6), unclamps fastener (7) again and removes many tube axials (5), unclamps fastener (7) again and then removes many and choose pipe (4).
2. the casting construction method of concrete grounding arch according to claim 1 is characterized in that: described step is 1.～5. for to carry out along the synchronous symmetry in the grounding arch left and right sides, until whole arch structures concrete water to smash in dome portions close up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810063594A CN101314960B (en) | 2008-06-23 | 2008-06-23 | Pouring construction method of concrete grounding arch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810063594A CN101314960B (en) | 2008-06-23 | 2008-06-23 | Pouring construction method of concrete grounding arch |
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| Publication Number | Publication Date |
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| CN101314960A CN101314960A (en) | 2008-12-03 |
| CN101314960B true CN101314960B (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810063594A Expired - Fee Related CN101314960B (en) | 2008-06-23 | 2008-06-23 | Pouring construction method of concrete grounding arch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113073762B (en) * | 2021-03-25 | 2022-08-23 | 苏州金螳螂建筑装饰股份有限公司 | Multichannel assembled maintenance structure in large space |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405418A (en) * | 2002-07-23 | 2003-03-26 | 赵之娟 | Post-stretching prestressed concrete arch bar roof and its construction method |
| CN1978801A (en) * | 2005-12-06 | 2007-06-13 | 蒋振彦 | Super-span steel skew arch construction method |
| CN201232257Y (en) * | 2008-06-23 | 2009-05-06 | 华丰建设股份有限公司 | Special operation platform for cast-place construction of concrete floor type arch |
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2008
- 2008-06-23 CN CN200810063594A patent/CN101314960B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405418A (en) * | 2002-07-23 | 2003-03-26 | 赵之娟 | Post-stretching prestressed concrete arch bar roof and its construction method |
| CN1978801A (en) * | 2005-12-06 | 2007-06-13 | 蒋振彦 | Super-span steel skew arch construction method |
| CN201232257Y (en) * | 2008-06-23 | 2009-05-06 | 华丰建设股份有限公司 | Special operation platform for cast-place construction of concrete floor type arch |
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| CN101314960A (en) | 2008-12-03 |
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Address after: 315700, No. 1, Lake Road, Dandong street, Xiangshan County, Ningbo, Zhejiang Patentee after: Huafeng Construction Co., Ltd. Address before: Hangzhou City, Zhejiang province 310014 eight Lane 1, Huadian Zhaohui District 1 Building 6 floor Patentee before: Huafeng Construction Co., Ltd. |
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