CN105178353A - Semi-reversible method construction process for enclosing wall under winter construction condition - Google Patents
Semi-reversible method construction process for enclosing wall under winter construction condition Download PDFInfo
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- CN105178353A CN105178353A CN201510306202.3A CN201510306202A CN105178353A CN 105178353 A CN105178353 A CN 105178353A CN 201510306202 A CN201510306202 A CN 201510306202A CN 105178353 A CN105178353 A CN 105178353A
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Abstract
The invention relates to a semi-reversible method construction process for enclosing wall under the winter construction condition. The process includes the specific steps that firstly, a concrete enclosing wall stand column is industrially machined; secondly, pouring is conducted on a concrete foundation platform on site; thirdly, a concrete column which has been machined is installed; fourthly, reinforcing steel bars are welded and fixed; fifthly, secondary pouring is conducted on a concrete ground beam; and sixthly, construction is completed. According to the construction process, partial reversible method construction for forming an enclosing wall column through bottom-to-top operation and top-to-bottom operation in sequence is adopted, and the semi-reversible method construction has the beneficial effects of saving lands and materials and being environment-friendly, high in construction efficiency and short in total construction period.
Description
Technical field
The invention belongs to electrical building construction field, especially a kind of winter executes the half against method technique of enclosure wall under condition.
Background technology
Base, Customer Service Center of State Grid Corporation of China north engineering enclosure wall length about 1920 meters, construct on the occasion of winter, difficulty of construction is comparatively large, and time construction period is short, and construction technology task difficulty is conveniently large, and must complete at the appointed time.
The public technology of preliminary search analogous technical fields:
A kind of steel-concrete linkage section construction method (CV104631823A), belongs to technical field of building construction.Steel of the present invention-concrete linkage section construction method, comprises the following steps: install adapter section model by place for steel cap installation of embedded parts; Build adapter section concrete; After concrete setting intensity reaches design load, by place for steel case arch rib-hoisting; Steel case arch arch rib and steel cap built-in fitting are welded together, in welding process, controls weld temperature difference between inside and outside concrete and be less than 20 DEG C.The present invention's concreting before installation steel arch arch rib can effectively avoid toughened internal stress to install steel work to the impact of concrete construction; Concreting process construction space is large, and difficulty of construction reduces, and concrete pouring quality is good; Simultaneously can also the reduction of erection time.Especially, before concreting, arrange cooling system between concrete and welding position, good cooling effect, concrete quality is good.
A kind of construction method (CN104532987A) of dry concrete wall of built-in heat insulation layer, comprises the following steps successively: preparation of construction → computer in advance typesetting → base treatment → surveying setting-out → chemically-planted steel bar → welding split bolt → stickup 90mm graphite foam plate → reinforcing bar binding → Shimizu concrete template processing → supporting steel pipe scaffold building and Shimizu concrete template install → pouring exposed concrete and vibrating → Shimizu concrete template removes → clear-water concrete finished product protection → clear-water concrete protects liquid to construct; Advantage is: the present invention effectively ensure that faced concrete surface planeness, there will not be wrong stubble, spillage, returns rust phenomenon.Guarantee that metope thickness of protection tier meets design and code requirement; Wall surface energy-saving Be very effective, avoids heat insulating material by the destruction of external substance, outer active force, and heat insulation effect is lasting, and has saved the materials such as grid cloth, peg, bonding adhesive, eliminates external wall plastering operation, effectively reduces construction cost.
Through contrast, the difference compared with present patent application technical scheme required for protection of published prior art is comparatively large, its technical problem solved not identical.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide a kind of structure is simple, reasonable in design, cost is lower, easy to use winter to execute the half against method technique of enclosure wall under condition.
The present invention solves its technical problem and takes following technical scheme to realize:
Winter executes the half against method technique of enclosure wall under condition, it is characterized in that: concrete technology step is:
(1) batch production fabrication of concrete enclosure upright post, process top enclosure wall concrete column in advance, post needs indwelling suspension centre;
(2) poured in place concrete foundation platform, concreting cushion cap is to grade beam lower end at the construction field (site), and the location of backup land beam steel and concrete column arranges fulcrum;
(3) the concrete column that machined is installed, and after the concrete strength of concrete foundation cushion cap reaches 70%, is lifted into by the concrete column machined on concrete foundation cushion cap;
(4) welded reinforcement is fixed, and location reserved on centering concrete column and concrete foundation cushion cap arranges position of the fulcrum, and is welded and fixed by the reserved steel bar on mixed cylinder reinforcing bar and concrete bearing platform;
(5) secondary concreting grade beam, carries out ground beam steel bar colligation and concreting, and reserved tomography to be inserted in the middle part of cylinder by concrete, and the reinforcing bar in complete coated concrete column group and grade beam:
(6) constructed.
And, concrete column comprises single footing, cylinder, reserved support, cylinder reinforcing bar, form cube shaped single footing upper center at concrete and be vertically fixed with the cylinder that a concrete makes, in the middle part of this cylinder in corresponding construction depth of beam reserve upper and lower two sections that cylinder is divided into coaxial spaced by rear cast tomography, in the middle part of upper and lower two sections of cylinders, be coaxially shaped with reserved support for connecting and support cylinder, this reserved support periphery upper and lower two sections of cylinders between symmetrical interval be fixed with many cylinder reinforcing bar be vertically set.
Advantage of the present invention and good effect are:
1, adopt this construction technology to be, again thus form the part reverse construction of enclosing wall column first from bottom to top from top to bottom, have save land, material-saving, environmental protection, efficiency of construction be high, and the advantage that total time of construction is short.
2, to be applicable to architectural complex intensive in the present invention, adjacent building is nearer, groundwater table is higher, and the high level that basement buried depth is large and construction plant is narrow and small or multilayer ground, underground structrue engineering, as subway station, underground garage, underground power house, underground reservoir, underground substation etc.
Accompanying drawing explanation
Fig. 1 is concrete column structure schematic diagram of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
Winter executes the half against method technique of enclosure wall under condition, adopt first from bottom to top, more top-down half against method form enclosing wall column, concrete technology step is:
(1) batch production fabrication of concrete enclosure upright post, entrust the process unit's processing top enclosure wall concrete column possessing qualification in advance, post needs indwelling suspension centre;
The structure of concrete column is see Figure of description, comprise single footing 4, cylinder 1, reserved support 2, cylinder reinforcing bar 3, form cube shaped single footing upper center at concrete and be vertically fixed with the cylinder that a concrete makes, in the middle part of this cylinder in corresponding construction depth of beam reserve rear cast tomography cylinder be divided into the upper of coaxial spaced, lower two sections, upper, reserved support is coaxially shaped with for connecting and support cylinder in the middle part of lower two sections of cylinders, this reserved support periphery upper, between lower two sections of cylinders, symmetrical interval is fixed with many and vertically arranges cylinder reinforcing bar, these many cylinder reinforced bar support cylinders ensure column intensity.
In construction, the reinforcing bar of grade beam need through gap reserved reserved support and cylinder reinforcing bar, and welding and the colligation of then carrying out reinforcing bar are again fixed, and then carry out concrete secondary and build.
(2) poured in place concrete foundation platform, poured in place concrete cushion cap is to grade beam lower end, and the location of backup land beam steel and concrete column arranges fulcrum;
(3) the concrete column that machined is installed, and after the concrete strength of concrete foundation cushion cap reaches 70%, is lifted into by the concrete column machined on concrete foundation cushion cap;
(4) welded reinforcement is fixed, and location reserved on centering concrete column and concrete foundation cushion cap arranges position of the fulcrum, and is welded and fixed by the reserved steel bar on mixed cylinder reinforcing bar and concrete bearing platform;
(5) secondary concreting grade beam, carries out ground beam steel bar colligation and concreting, and reserved tomography to be inserted in the middle part of cylinder by concrete, and the reinforcing bar in complete coated concrete column group and grade beam:
(6) constructed.
Construction Principle: contrary sequence method is a kind of construction technology of building foundation pit supporting, it, by the drag of Appropriate application building underground structure self, reaches the object of supporting foundation pit.Contrary sequence method be using the exterior wall of underground structure as the barricade (diaphragm wall) of pattern foundation pit supporting structure, using the beam slab of structure as the horizontal support of barricade, using the base pit stand construction of the frame column of structure as the operation from top to bottom of barricade support post.According to foundation ditch supporting way, contrary sequence method can be divided into full-reverse method, semi-inverse method and the Partial Inverse practice three kinds.The key of contrary sequence method design and construction is node problems, i.e. the connection of wall and beam slab, the connection of post and beam slab, and can it is related to structural system co-ordination, and can building function realize.
This construction method is at national grid Customer Service Center north base (first phase) engineering construction, and remarkable lifting construction speed, reach construction requirement, and quality inspection is up to standard, effective.
Technical indicator
(1) Top-down Construction Technique should meet the relevant regulations of national current standard " Code for design of building " GB5007, " underground structrue engineering contrary sequence method tecnical regulations " JGJ165 generally.
(2) sedimentation of vertical upright column, should meet the force and deformation requirement of agent structure.
Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (2)
1. the winter executes a half against method technique for enclosure wall under condition, it is characterized in that: concrete technology step is:
(1) batch production fabrication of concrete enclosure upright post, process top enclosure wall concrete column in advance, post needs indwelling suspension centre;
(2) poured in place concrete foundation platform, concreting cushion cap is to grade beam lower end at the construction field (site), and the location of backup land beam steel and concrete column arranges fulcrum;
(3) the concrete column that machined is installed, and after the concrete strength of concrete foundation cushion cap reaches 70%, is lifted into by the concrete column machined on concrete foundation cushion cap;
(4) welded reinforcement is fixed, and location reserved on centering concrete column and concrete foundation cushion cap arranges position of the fulcrum, and is welded and fixed by the reserved steel bar on mixed cylinder reinforcing bar and concrete bearing platform;
(5) secondary concreting grade beam, carries out ground beam steel bar colligation and concreting, and reserved tomography to be inserted in the middle part of cylinder by concrete, and the reinforcing bar in complete coated concrete column group and grade beam:
(6) constructed.
2. the winter according to claim 1 executes the half against method technique of enclosure wall under condition, it is characterized in that: concrete column comprises single footing, cylinder, reserved support, cylinder reinforcing bar, form cube shaped single footing upper center at concrete and be vertically fixed with the cylinder that a concrete makes, in the middle part of this cylinder in corresponding construction depth of beam reserve rear cast tomography cylinder be divided into the upper of coaxial spaced, lower two sections, upper, reserved support is coaxially shaped with for connecting and support cylinder in the middle part of lower two sections of cylinders, this reserved support periphery upper, between lower two sections of cylinders, symmetrical interval is fixed with many and vertically arranges cylinder reinforcing bar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510306202.3A CN105178353B (en) | 2015-06-05 | 2015-06-05 | Semi-reversible method construction process for enclosing wall under winter construction condition |
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| CN201510306202.3A CN105178353B (en) | 2015-06-05 | 2015-06-05 | Semi-reversible method construction process for enclosing wall under winter construction condition |
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| CN105178353A true CN105178353A (en) | 2015-12-23 |
| CN105178353B CN105178353B (en) | 2017-01-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260720A (en) * | 2008-04-11 | 2008-09-10 | 山东龙新建材股份有限公司 | Network frame prefabricated composite board, sandwiched floor and its connection construction method |
| CN101597920A (en) * | 2008-06-02 | 2009-12-09 | 蒋正波 | Assembled type building construction and method thereof |
| US20110209436A1 (en) * | 2008-11-03 | 2011-09-01 | Elena Fabbri | Structure for prefabricated |
| CN104264865A (en) * | 2014-09-23 | 2015-01-07 | 国家电网公司 | Assembly type firewall |
| CN104631665A (en) * | 2015-01-19 | 2015-05-20 | 昆明理工大学 | Construction method for anti-seismic rammed earth wall with reinforced surface skin and core columns |
-
2015
- 2015-06-05 CN CN201510306202.3A patent/CN105178353B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260720A (en) * | 2008-04-11 | 2008-09-10 | 山东龙新建材股份有限公司 | Network frame prefabricated composite board, sandwiched floor and its connection construction method |
| CN101597920A (en) * | 2008-06-02 | 2009-12-09 | 蒋正波 | Assembled type building construction and method thereof |
| US20110209436A1 (en) * | 2008-11-03 | 2011-09-01 | Elena Fabbri | Structure for prefabricated |
| CN104264865A (en) * | 2014-09-23 | 2015-01-07 | 国家电网公司 | Assembly type firewall |
| CN104631665A (en) * | 2015-01-19 | 2015-05-20 | 昆明理工大学 | Construction method for anti-seismic rammed earth wall with reinforced surface skin and core columns |
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| CN105178353B (en) | 2017-01-11 |
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