CN105298126A - Method for high-formwork construction of large-diameter oval oblique-cone structure - Google Patents

Method for high-formwork construction of large-diameter oval oblique-cone structure Download PDF

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Publication number
CN105298126A
CN105298126A CN201510687976.5A CN201510687976A CN105298126A CN 105298126 A CN105298126 A CN 105298126A CN 201510687976 A CN201510687976 A CN 201510687976A CN 105298126 A CN105298126 A CN 105298126A
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Prior art keywords
template
line
construction
sheetinstallat
steel pipe
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CN105298126B (en
Inventor
胡长亮
韩越
代强
周嗣延
梁兵
韩腾飞
刘磊
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Mcc Northeast Construction (shenyang) Engineering Technology Co Ltd
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Mcc Northeast Construction (shenyang) Engineering Technology Co Ltd
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Abstract

The invention creatively provides a method for high-formwork construction of a large-diameter oval oblique-cone structure, wherein a template type is selected at first, the template is then fabricated, positioned and installed, and the template is dismantled after the construction. The construction structure in the type of construction is a large-span oblique cone, and the structure bears force eccentrically with a very large eccentric distance, so a conventional template supporting method cannot satisfy requirements of the structure for force bearing. The structure has complicated design, wherein the plane face is an irregular circle, the stereoscopic shape is an oblique core tube-in-tube structure with a large span, and the structure requires high precision. The method provided by the invention is strong in practicability and operability and high in construction precision, and makes up former absence of a construction method for template engineering of a large-diameter oval oblique-cone tube structure.

Description

Major diameter Oblique Elliptic conic tube structure high-formwork construction method
Technical field
The present invention relates to a kind of construction method, especially a kind of major diameter Oblique Elliptic conic tube structure high-formwork construction method.
Background technology
Form work engineering is a very important step in reinforced concrete construction, is the basis of modern construction engineering, and form work engineering, as the requisite working procedure of modern architecture industry, also will be innovated along with the development of builing industry.In modern architecture, there is the precedent of a lot of major diameter Oblique Elliptic conic tube class building, when traditional construction method is for this type of building operations, can not meet this type of building operations requirement, at present also not for the concrete construction method of this type of building, the construction method for major diameter Oblique Elliptic conic tube structure high-supported formwork therefore providing a kind of strong operability, practicality good is extremely urgent.
Summary of the invention
In order to solve the problems of the technologies described above, it is a kind of major diameter Oblique Elliptic conic tube structure high-formwork construction method that the invention provides, first template type selecting is carried out, this time and carry out template construct, Template Location, model sheetinstallat, form removable is carried out after construction terminates, solve because this class formation is large span beveled cone, structure eccentric force and eccentric throw are very big, use prior art construction method can not meet the technical problem of the technical requirements of major diameter Oblique Elliptic conic tube structure construction.
To achieve these goals, the technical solution used in the present invention is: major diameter Oblique Elliptic conic tube structure high-formwork construction method, the steps include:
1), template type selecting: adopt film coating plywood as panel, 50*100mm flitch is stupefied as vertical wood, and diameter is that the indented bars of 22mm encloses purlin;
2), template construct:
2a), after raft foundation constructed, inner/outer tube body of wall position line is carried out accurate setting-out by foundation ground;
2b), template selects 1220mm*2440mm film coating plywood, in the template back surface 1220mm length of side between two parties, is the seam of thickness of slab 1/2, to ensure circular arc smoothness along length to depth of cut;
2c), the every 0.75m of design drawing provides plane positioning figure, determines that 3.75m is each formwork height;
3), Template Location:
3a), basic top mark height body of wall coordinate is drawn according to electronic edition drawing, by the setting-out of wall contour line in bottom surface, at 3.75m absolute altitude, place sets up temporary platform, the wall internal mould three-dimensional coordinate suitable for reading at 3.75m absolute altitude place is got according to design drawing, use total powerstation by three-dimensional coordinate setting-out in platform, use reinforcing bar is moulding along institute's coordinate point of putting;
3b), along the body of wall moulding reinforcing bar suitable for reading at basic end face body of wall locating wheel profile and 3.75 meters of put the lumps of wood, spacing is 150mm, then installation form on the lumps of wood, and upper open height is 3.75 meters;
3c), colligation wall steel bar, to put, fixing concrete top rod;
4), model sheetinstallat:
4a), model sheetinstallat order: inner side template with minimum X1 side, body of wall position, angle of inclination for starting point, bilateral symmetry installs body of wall inner side template to X2 side simultaneously, after inner side template installation, along inner side template assembling reinforcement, install outboard template after folding lattice, outboard template erection sequence is identical with inner side template;
4b), establish outside template and enclose stupefied temporarily, unify with bolt and veneer and flitch;
4c), the handling of block template in place after utilize framed bent, if temporary support;
4d), to urceolus elliptical modes plate and interior oval template using Screw arbor with nut at both-ends to carry out drawing, to pulling complete post-equalization, ensureing that the ellipse that template vertical line suitable for reading and flooring are put well in advance coincide;
4e), bracing reinforcement;
4f), template corrects: in template, carry out major and minor axis end points and each angle line and camber line intersection point mark in advance, until model sheetinstallat complete temporary fixed after, the intersection point measuring different angles line and camber line according to aforementioned template anchor point setting out method suitable for reading carries out checking correction;
4g), after template correction is fixing, leads to line up and down at major axis correspondence position and carry out checking inspection;
5), concreting: wall outer side model sheetinstallat completes, errorless through reinforcing, checking confirmation, the qualified after-pouring concrete of inspection declaration;
6), form removable:
6a) shell body of wall inner side template is all built complete at all walls concretes, and 100% rear that concrete strength reaches design strength is dismountable;
After 6b) reaching form removal condition, form removable is from the side X2 that angle of inclination is maximum, and the bilateral symmetry simultaneously side X1 minimum to angle of inclination is removed, and according to sequentially carrying out from top to bottom.
Step 2b) in, as action ﹥ 2 ㎜ of every 610mm wide template place arc, then cut the seam that a seam is 1/2 of thickness of slab, wide 1/3 ㎜ deeply, until meet action <2mm at the back side at veneer 610mm intermediate width place.
Step 4e) in bracing reinforcement: adopt steel pipe bent-frame bracing system in cylinder, on raft plate, bury reinforced steel bar ring underground along oval surrounding in advance, in ring, wear steel pipe to sweep the floor bar as framed bent, steel pipe and ring internal pore timber wedge jam-pack; Steel pipe framed bent vertical pole ' s span is 600mm, and horizontal cross bar step pitch is 1000mm, and arranges in length and breadth to bridging.
The beneficial effect of the invention is: the invention provides a kind of major diameter Oblique Elliptic conic tube structure high-formwork construction method, first template type selecting is carried out, this time and carry out template construct, Template Location, model sheetinstallat, form removable is carried out after construction terminates.Because this class construction building structure is large span beveled cone, structure eccentric force, and eccentric throw is very big, conventional mould supporting method can not meet this structure stress requirement, this complex structural designs, and plane is irregular cycle, solid is oblique cone cylindrical shell tube in tube structure, and span is large, and precision prescribed is high.Use the inventive method, practicality, workable, construction precision is high, has filled up the blank of previous major diameter Oblique Elliptic conic tube stay in place formwork engineering construction method.
Accompanying drawing explanation
Fig. 1: be the invention mixture proportioning in construction.
Fig. 2: be the invention foundation location figure.
Detailed description of the invention
Major diameter Oblique Elliptic conic tube structure high-formwork construction method, the steps include:
1), template type selecting: adopt film coating plywood as panel, 50*100mm flitch is stupefied as vertical wood, and diameter is that 22mm reinforcing bar encloses purlin;
2), template construct:
2a), after raft foundation constructed, inner/outer tube body of wall position line is carried out accurate setting-out by foundation ground;
2b), template selects 1220mm*2440mm film coating plywood, in the template back surface 1220mm length of side between two parties, is the seam of thickness of slab 1/2, to ensure circular arc smoothness along length to depth of cut.
2c), the every 0.75m of design drawing provides plane positioning figure, determines that 3.75m is each formwork height;
3), Template Location:
3a), basic top mark height body of wall coordinate is drawn according to electronic edition drawing, by the setting-out of wall contour line in bottom surface, at 3.75m absolute altitude, place sets up temporary platform, the wall internal mould three-dimensional coordinate suitable for reading at 3.75m absolute altitude place is got according to design drawing, use total powerstation by three-dimensional coordinate setting-out in platform, use reinforcing bar is moulding along institute's coordinate point of putting;
3b), along the body of wall moulding reinforcing bar suitable for reading at basic end face body of wall locating wheel profile and 3.75 meters of put lumps of wood 150mm, then installation form on the lumps of wood, upper open height is 3.75 meters;
3c), colligation wall steel bar, to put, fixing concrete top rod;
4), model sheetinstallat:
4a), model sheetinstallat order: inner side template is installed with minimum X1 side, body of wall position, angle of inclination as starting point, bilateral symmetry installs body of wall inner side template to X1 side simultaneously, after inner side template installation, along inner side template assembling reinforcement, can install outboard template after report concealment acceptance is qualified, outboard template erection sequence is identical with inner side template.(position of X1, X2 as shown in Figure 2)
4b), establish outside template and enclose stupefied temporarily, unify with bolt and veneer and flitch;
4c), the handling of block template in place after utilize framed bent, if temporary support;
4d), to urceolus elliptical modes plate and interior oval template using Screw arbor with nut at both-ends to carry out drawing, to pulling complete post-equalization, ensureing that the ellipse that template vertical line suitable for reading and flooring are put well in advance coincide;
4e), bracing reinforcement;
4f), template corrects: in template, carry out major and minor axis end points and each angle line and camber line intersection point mark in advance, until model sheetinstallat complete temporary fixed after, the intersection point measuring different angles line and camber line according to aforementioned template anchor point setting out method suitable for reading carries out checking correction.
4g), after template correction is fixing, leads to line up and down at major axis correspondence position and carry out checking inspection;
5) concreting: wall outer side model sheetinstallat completes, errorless through reinforcing, checking confirmation, and inspection declaration qualified after can concreting, because this engineering body of wall angle of inclination is larger, be unfavorable for concretely building, vibrating, for guaranteeing the safe, reliable of agent structure, so select to adopt self-compacting concrete, pouring order of concrete is identical with model sheetinstallat order.
6), form removable:
6a) because the angle of this engineering body of wall gradient changes greatly (58 degree of-89 degree), structure stress form more complicated, for ensureing structural safety, this engineering inside and outside shell body of wall inner side template all must be built complete at all walls concretes, and 100% rear that concrete strength must reach design strength is dismountable.
After 6b) reaching form removal condition, form removable is from the side Y2 that angle of inclination is maximum, and the bilateral symmetry simultaneously side Y1 minimum to angle of inclination is removed, and according to sequentially carrying out from top to bottom.
Two indented barss of to be diameter the be 22mm of reinforcing bar described in step 1).
Step 2b) in, as every 610mm(1220/2) action ﹥ 2 ㎜ of wide template place arc time, then cut the seam that a seam is 1/2 of thickness of slab, wide 1/3 ㎜ deeply at veneer (610mm intermediate width) back side, until meet action <2mm.
Step 4e) in bracing reinforcement: adopt steel pipe bent-frame bracing system in cylinder, on raft plate, bury reinforced steel bar ring underground along oval surrounding in advance, in ring, wear steel pipe to sweep the floor bar as framed bent, steel pipe and ring internal pore timber wedge jam-pack; Steel pipe framed bent vertical pole ' s span is 600mm, and horizontal cross bar step pitch is 1000mm, and arranges in length and breadth to bridging, and support body progressively inwardly shrinks with body of wall angle of inclination, guarantees the resistance to overturning of sloping portion support system.
During Specific construction:
1, template type selecting:
Film coating plywood is adopted to make panel, the vertical wood of 50*100 ㎜ flitch work stupefied (plate joint adopts 100*100 ㎜ flitch) diameter is enclose purlin after two indented barss of 22mm curve arcuation, shell Φ 16 ㎜ Screw arbor with nut at both-ends double nut, inner casing Φ 14 ㎜ Screw arbor with nut at both-ends double nut.
2, template construct:
1), after raft foundation has been constructed, inner/outer tube body of wall position line is carried out accurate setting-out by foundation ground;
2) oval chord length is gone out by the modulus dipstick metering of wide 1220 ㎜ of template: when string and sagitta of arc height ﹤ 2 ㎜, inside and outside ellipse is divided into some pieces; When between chord length and camber line during rise ﹥ 2 ㎜, cut a seam at the veneer back side, seam is 1/2 of thickness of slab deeply, and wide 1/3 ㎜, the every block twice of spacing are as the criterion to meet rise ﹤ 2 ㎜.
3) because this engineering body is taper, in order to ensure body, special every 0.75 meter of design drawing provides plane positioning figure.In conjunction with design drawing, determine that each formwork height is with 0.75 meter 5 times, namely 3.75 meters.
4) Template Location, installation (inside and outside circle preparation method is identical):
(1), first basic top mark height body of wall coordinate (every 600mm arc length is got a bit) is obtained, by the setting-out of wall contour line in ground according to electronic edition drawing.Then, set up temporary platform at 3.75 meters of absolute altitude places, then obtain the wall internal mould three-dimensional coordinate suitable for reading at 3.75 meters of absolute altitude places according to drawing, with total powerstation by three-dimensional coordinate setting-out in platform, and use diameter 22mm(HRB400E) reinforcing bar along institute coordinate point of putting moulding.
(2) lumps of wood put by the body of wall moulding reinforcing bar suitable for reading along basic end face body of wall locating wheel profile and 3.75 meters of, is spaced apart 150mm, then along highly spreading nailing template.
(3), start colligation wall steel bar after the installation of body of wall inner side template, after reinforcing bar binding completes, put according to spacing 600mm, fixing 40mm*40mm (length is wall thickness) concrete top rod, ensure thickness of wall body and thickness of protection tier.
(4), reinforcing bar operation starts after completing to install wall outer side template, reinforcing template.
3, model sheetinstallat:
1) inner side template is installed with minimum X1 side, body of wall position, angle of inclination as starting point, bilateral symmetry installs body of wall inner side template to X2 side simultaneously, after inner side template installation, along inner side template assembling reinforcement, can install outboard template after report concealment acceptance is qualified, outboard template erection sequence is identical with inner side template.
2) establish outside every block template and enclose stupefied temporarily, unify, so that lifting safety with bolt and veneer and flitch.
3) every block template handling in place after utilize framed bent, if temporary support.
4) urceolus oval template Φ 16 ㎜ Screw arbor with nut at both-ends is to drawing, between left and right apart from 500, between the upper and lower apart from 600, interior oval template Φ 14 ㎜ Screw arbor with nut at both-ends is to drawing, and distance 500 between left and right, between the upper and lower apart from 600, to pulling complete post-equalization, the ellipse that template vertical line suitable for reading and flooring are put well in advance should coincide.
5) bracing reinforcement
Adopt steel pipe bent-frame bracing system in cylinder, on raft plate, bury reinforced steel bar ring underground along oval surrounding in advance, in ring, wear Φ 48mm steel pipe to sweep the floor bar, steel pipe and ring internal pore timber wedge jam-pack as framed bent.Steel pipe framed bent vertical pole ' s span 800-1200mm, horizontal cross bar step pitch 1800mm, and arrange in length and breadth to bridging, framed bent height is determined by story height, and See Figure set up by framed bent.Overall framed bent is set up in outer oval north side, framed bent width 15m, framed bent and cylindrical shell drawknot, arranges diagonal brace between wall mould and framed bent with Φ 48mm steel pipe, bracing reinforcement method with in cylinder, framed bent layout.
6) template corrects
In template, carry out major and minor axis end points and each angle line and camber line intersection point mark in advance, until model sheetinstallat complete temporary fixed after, the intersection point measuring different angles line and camber line according to aforementioned template anchor point setting out method suitable for reading carries out checking correction.
7) be ensure that the upper and lower smoothness of oblique cylinder, angle are accurate, after template correction is fixing, leads to line up and down at major axis correspondence position and carry out checking inspection.
5, concreting: wall outer side model sheetinstallat completes, errorless through reinforcing, checking confirmation, and inspection declaration qualified after can concreting, because this engineering body of wall angle of inclination is larger, be unfavorable for concretely building, vibrating, for guaranteeing the safe, reliable of agent structure, so select to adopt self-compacting concrete, pouring order of concrete is identical with model sheetinstallat order.
6, form removable:
Substantially the body of wall side form not bearing concrete gravity performs by stalk side form form removal requirement, and it is dismountable that the body of wall side form bearing part concrete gravity should treat that concrete strength reaches 100% rear.
Dismounting order: support → screw rod, enclose stupefied → piece joint flitch → piecemeal template → handling.

Claims (3)

1. major diameter Oblique Elliptic conic tube structure high-formwork construction method, the steps include:
1), template type selecting: adopt film coating plywood as panel, 50*100mm flitch is stupefied as vertical wood, and diameter is that the indented bars of 22mm encloses purlin;
2), template construct:
2a), after raft foundation constructed, inner/outer tube body of wall position line is carried out accurate setting-out by foundation ground;
2b), template selects 1220mm*2440mm film coating plywood, in the template back surface 1220mm length of side between two parties, is the seam of thickness of slab 1/2, to ensure circular arc smoothness along length to depth of cut;
2c), the every 0.75m of design drawing provides plane positioning figure, determines that 3.75m is each formwork height;
3), Template Location:
3a), basic top mark height body of wall coordinate is drawn according to electronic edition drawing, by the setting-out of wall contour line in bottom surface, at 3.75m absolute altitude, place sets up temporary platform, the wall internal mould three-dimensional coordinate suitable for reading at 3.75m absolute altitude place is got according to design drawing, use total powerstation by three-dimensional coordinate setting-out in platform, use reinforcing bar is moulding along institute's coordinate point of putting;
3b), along the body of wall moulding reinforcing bar suitable for reading at basic end face body of wall locating wheel profile and 3.75 meters of put the lumps of wood, spacing is 150mm, then installation form on the lumps of wood, and upper open height is 3.75 meters;
3c), colligation wall steel bar, to put, fixing concrete top rod;
4), model sheetinstallat:
4a), model sheetinstallat order: inner side template with minimum X1 side, body of wall position, angle of inclination for starting point, bilateral symmetry is installed to X2 side simultaneously, after inner side template installation, along inner side template assembling reinforcement, install outboard template after folding lattice, outboard template erection sequence is identical with inner side template;
4b), establish outside template and enclose stupefied temporarily, unify with bolt and veneer and flitch;
4c), the handling of block template in place after utilize framed bent, if temporary support;
4d), to urceolus elliptical modes plate and interior oval template using Screw arbor with nut at both-ends to carry out drawing, to pulling complete post-equalization, ensureing that the ellipse that template vertical line suitable for reading and flooring are put well in advance coincide;
4e), bracing reinforcement;
4f), template corrects: in template, carry out major and minor axis end points and each angle line and camber line intersection point mark in advance, until model sheetinstallat complete temporary fixed after, the intersection point measuring different angles line and camber line according to aforementioned template anchor point setting out method suitable for reading carries out checking correction;
4g), after template correction is fixing, leads to line up and down at major axis correspondence position and carry out checking inspection;
5), concreting: wall outer side model sheetinstallat completes, errorless through reinforcing, checking confirmation, the qualified after-pouring concrete of inspection declaration;
6), form removable:
6a) shell body of wall inner side template is all built complete at all walls concretes, and 100% rear that concrete strength reaches design strength is dismountable;
After 6b) reaching form removal condition, form removable is from the side X2 that angle of inclination is maximum, and the bilateral symmetry simultaneously side X1 minimum to angle of inclination is removed, and according to sequentially carrying out from top to bottom.
2. major diameter Oblique Elliptic conic tube structure high-formwork construction method according to claim 1, it is characterized in that: step 2b) in, as action ﹥ 2 ㎜ of every 610mm wide template place arc, cutting a seam at the back side at veneer 610mm intermediate width place is again 1/2 of thickness of slab deeply, the seam of wide 1/3 ㎜, until meet action <2mm.
3. according to major diameter Oblique Elliptic conic tube structure high-formwork construction method according to claim 1, it is characterized in that: step 4e) middle bracing reinforcement: adopt steel pipe bent-frame bracing system in cylinder, reinforced steel bar ring is buried underground along oval surrounding in advance on raft plate, in ring, wear steel pipe to sweep the floor bar as framed bent, steel pipe and ring internal pore timber wedge jam-pack; Steel pipe framed bent vertical pole ' s span is 600mm, and horizontal cross bar step pitch is 1000mm, and arranges in length and breadth to bridging.
CN201510687976.5A 2015-10-23 2015-10-23 Method for high-formwork construction of large-diameter oval oblique-cone structure Active CN105298126B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5628156A (en) * 1995-10-24 1997-05-13 Tarics; Alexander G. Moment resisting frame having cruciform columns and beam connections and method for use therewith
CN1510225A (en) * 2002-12-23 2004-07-07 中国建筑第八工程局中南公司 Method for constructing Y shape pillar and suspended declined beam
CN202520017U (en) * 2012-04-20 2012-11-07 天津住宅集团建设工程总承包有限公司 Construction structure of variable cross-section prestress overhanging type folding beam for stand
CN203113793U (en) * 2013-03-15 2013-08-07 煤炭工业郑州设计研究院股份有限公司 Large formwork installation system of oblique structure
CN104295001A (en) * 2014-08-25 2015-01-21 浙江省一建建设集团有限公司 Variable cross-section pre-stress cant beam and construction process thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5628156A (en) * 1995-10-24 1997-05-13 Tarics; Alexander G. Moment resisting frame having cruciform columns and beam connections and method for use therewith
CN1510225A (en) * 2002-12-23 2004-07-07 中国建筑第八工程局中南公司 Method for constructing Y shape pillar and suspended declined beam
CN202520017U (en) * 2012-04-20 2012-11-07 天津住宅集团建设工程总承包有限公司 Construction structure of variable cross-section prestress overhanging type folding beam for stand
CN203113793U (en) * 2013-03-15 2013-08-07 煤炭工业郑州设计研究院股份有限公司 Large formwork installation system of oblique structure
CN104295001A (en) * 2014-08-25 2015-01-21 浙江省一建建设集团有限公司 Variable cross-section pre-stress cant beam and construction process thereof

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