CN103758143B - Formwork structure of bridge foundation underwater concrete continuous wall cofferdam - Google Patents
Formwork structure of bridge foundation underwater concrete continuous wall cofferdam Download PDFInfo
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- CN103758143B CN103758143B CN201410051198.6A CN201410051198A CN103758143B CN 103758143 B CN103758143 B CN 103758143B CN 201410051198 A CN201410051198 A CN 201410051198A CN 103758143 B CN103758143 B CN 103758143B
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- purlin
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Abstract
The invention relates to the field of bridge construction projects, in particular to a formwork structure of a bridge foundation underwater concrete continuous wall cofferdam. The formwork structure comprises an inner corral purlin steel formwork and an outer corral purlin steel formwork, wherein the inner corral purlin steel formwork and the outer corral purlin steel formwork share the same circle center axis. The inner corral purlin steel formwork and the outer corral purlin steel formwork are respectively formed by combining and splicing a plurality of set-shaped steel formworks, and every two adjacent set-shaped steel formworks are fixed through a bearing type support structure. The formwork structure further comprises truss supporting mechanisms used for reinforcing and supporting the inner corral purlin steel formwork and the outer corral purlin steel formwork. According to the formwork structure of the bridge foundation underwater concrete continuous wall cofferdam, the set-shaped steel formworks are spliced to form the circular corral purlin steel formworks, construction work and material losses can be reduced, the construction period can be shortened, the economical benefits are obvious, the formwork structure can be suitable for the geological environment where water flow is gentle, the water depth is not more than 15 meters, the river bed covering layer is thin, and the base laccolite inclination degree is small, and the formwork structure has more obvious benefits when the construction period is short.
Description
Technical field
The present invention relates to bridge construction engineering field, be specially a kind of formwork structure of bridge foundation underwater concrete diaphragm wall cofferdam.
Background technology
Bridge engineering underwater foundation generally adopts pile foundation to add the structural shape of cushion cap, under water during bridge foundation construction, usually adopts the measures such as cofferdam, open caisson, box to carry out waterproof to bridge foundation under water, encloses water construction.The selection in construction waterproof cofferdam, depends primarily on the hydrology and the geological conditions at bridge location place, takes into account local Climate and environment feature simultaneously, according to site plant resource, the selection waterproof cofferdam of suiting measures to local conditions.
The water flows gently, the depth of water degree of depth is no more than 15 meters, Riverbed is thinner and substrate laccolite gradient is less, the duration is time tight, as adopted steel sheet-pile cofferdam, Double-Wall Steel Boxed Cofferdam, steel suspended box cofferdam structure, its steel cofferdam long construction period, complicated construction technique, and uneconomical.
Summary of the invention
The technical problem to be solved in the present invention is, for the deficiencies in the prior art, the water flows gently, the depth of water degree of depth is no more than 15 meters, Riverbed is thinner and substrate laccolite gradient is less, the duration is time tight, the formwork structure in a kind of bridge foundation underwater concrete diaphragm wall cofferdam of provide a kind of and can reduce construction workload, reduce spillage of material, shorten the construction period, increasing economic efficiency.
Technical scheme of the present invention is, a kind of formwork structure of bridge foundation underwater concrete diaphragm wall cofferdam, comprise the interior corral purlin steel form of concentric axle and outer corral purlin steel form, described interior corral purlin steel form and outer corral purlin steel form form by polylith set shaped steel formwork spelling, and adjacent set shaped steel formwork holds cribbing fastening structure by pressure; This formwork structure is also provided with the truss support mechanism for reinforcing and support interior corral purlin steel form and outer corral purlin steel form.
Cribbing is held and by fastening for polylith set shaped steel formwork by pressure, for ensureing effective connection of enclosing between every block set shaped steel formwork of purlin steel form, with bolts between every block set shaped steel formwork of described outer corral purlin steel form and interior corral purlin steel form; Intensity and stability that truss support mechanism can ensure to enclose purlin steel form are set.
The lower limb of described outer corral purlin steel form and interior corral purlin steel form is corrugated, enclosing the gap of purlin steel form between lower water back wall purlin in place steel form lower limb and riverbed substrate laccolite for reducing, according to the actual landform at bridge foundation riverbed place, not contour outer corral purlin steel form and interior corral purlin steel form can be installed.
Described truss support mechanism comprises and the first truss sheet of the circle core shaft of interior corral purlin steel form in collinear main steel pipe and fan-shaped layout, one end of first truss sheet and main fastener for connection, the other end of the first truss sheet is through interior corral purlin steel form and outer corral purlin steel form.
The second truss sheet that described truss support mechanism is also provided with lateral arrangement and the 3rd truss sheet longitudinally arranged, one end of second truss sheet and one end junction of the 3rd corresponding truss sheet are on the first truss sheet, ensure that truss support mechanism effectively supports and enclose purlin steel form, improve the stability of enclosing purlin steel form.
The interface place of described first truss sheet and interior corral purlin steel form and outer corral purlin steel form arranges steel pipe of vertically putting more energy into, and effectively can ensure the support of the first truss sheet and interior corral purlin steel form and outer corral purlin steel form; Oblique steel pipe of putting more energy into is set vertically putting more energy between steel pipe and the first truss sheet, effectively can ensures the stability of the first truss sheet.
Described pressure is held cribbing and is comprised horizontal steel tube and vertical steel pipe, and described horizontal steel tube abuts against the lateral surface of outer corral purlin steel form and interior corral purlin steel form, the end of adjacent level steel pipe near; Described vertical steel pipe abuts against outside corresponding horizontal steel tube, leaves spacing between adjacent vertical steel pipe.
The intersection of described vertical steel pipe and horizontal steel tube arranges Screw arbor with nut at both-ends, and the two ends of Screw arbor with nut at both-ends are fixed on outer corral purlin steel form respectively by nut and pressure corresponding to interior corral purlin steel form is held in cribbing structure.By Screw arbor with nut at both-ends, vertical steel pipe and horizontal steel tube are connected and fixed, so set shaped steel formwork is fastening.
The described Screw arbor with nut at both-ends side that corral purlin steel form is relative with interior corral purlin steel form outside arranges Screw arbor with nut at both-ends limit rib.
Compared with prior art, the beneficial effect of type of the present invention is: the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam of the present invention, aim to provide a kind of underwater concrete diaphragm wall cofferdam of bridge foundation construction, adopt set shaped steel formwork to be assembled into circle and enclose purlin steel form, construction working and spillage of material, shortening construction period, remarkable in economical benefits can be reduced, can be applicable to that the water flows gently, the depth of water degree of depth is no more than 15 meters, more effective benefit when the thinner and geological environment that substrate laccolite gradient is less of Riverbed, especially duration are nervous.Adopt circle enclose purlin steel form and arrange fan-shaped inner support truss, the lower water being conducive to enclosing purlin steel form is in place, and its structure is simple, clearly stressed, is conducive to enclosing the stable of purlin steel form.
Accompanying drawing explanation
Fig. 1 is the structural principle plan view of one embodiment of the invention;
Fig. 2 is the structural principle side view of one embodiment of the invention;
Fig. 3 is 1/4 plane figure enclosing purlin steel form of the present invention;
Fig. 4 is the elevation of the first truss sheet;
Fig. 5 is the elevation of the second truss sheet;
Fig. 6 is the elevation of the 3rd truss sheet.
Detailed description of the invention
As shown in Figure 1, a kind of formwork structure of bridge foundation underwater concrete diaphragm wall cofferdam, comprise the interior corral purlin steel form 4 of concentric axle and outer corral purlin steel form 3, interior corral purlin steel form 4 and outer corral purlin steel form 3 form by polylith set shaped steel formwork 5 spelling, with bolts between every block set shaped steel formwork, and adjacent set shaped steel formwork 5 holds cribbing fastening structure by pressure; This formwork structure is also provided with the truss support mechanism for reinforcing and support interior corral purlin steel form 4 and outer corral purlin steel form 3; Outer corral purlin steel form 3 is corrugated with the lower limb of interior corral purlin steel form 4.
Pressure is held cribbing and is comprised horizontal steel tube 7 and vertical steel pipe 8, described horizontal steel tube 7 abuts against the lateral surface of outer corral purlin steel form 3 and interior corral purlin steel form 4, the end of adjacent level steel pipe 7 near, and vertically steel pipe 8 abuts against outside corresponding horizontal steel tube 7, between adjacent vertical steel pipe 8 mutually across a certain distance; Described vertical steel pipe 8 arranges Screw arbor with nut at both-ends 1 with the intersection of horizontal steel tube 7, and the pressure that the two ends of Screw arbor with nut at both-ends 1 are fixed on outer corral purlin steel form 3 and interior corral purlin steel form 4 correspondence respectively by nut 2 is held in cribbing structure.
Screw arbor with nut at both-ends 1 side that corral purlin steel form 3 is relative with interior corral purlin steel form 4 outside arranges Screw arbor with nut at both-ends limit rib 6.
As shown in Figure 3, truss support mechanism comprises and the first truss sheet 9 of the circle core shaft of interior corral purlin steel form 4 in collinear main steel pipe 12 and many fan-shaped layouts, one end of first truss sheet 9 is connected with main steel pipe 12, and the other end of the first truss sheet 9 is through interior corral purlin steel form 4 and outer corral purlin steel form 3; One end junction of one end and the 3rd corresponding truss sheet 11 that truss support mechanism is also provided with the second truss sheet 10 of lateral arrangement and the 3rd truss sheet 11, second truss sheet 10 of longitudinal layout is on the first truss sheet 9.
As shown in Figure 4, the first truss sheet 9 arranges with the intersection of interior corral purlin steel form 4 and outer corral purlin steel form 3 steel pipe 13 of vertically putting more energy into, and arranges oblique steel pipe 14 of putting more energy into vertically putting more energy between steel pipe 13 and the first truss sheet.
As shown in Figure 5, the structure of the 3rd truss sheet as shown in Figure 6 for the structure of the second truss sheet.
Claims (7)
1. the formwork structure in a bridge foundation underwater concrete diaphragm wall cofferdam, comprise the interior corral purlin steel form (4) of concentric axle and outer corral purlin steel form (3), described interior corral purlin steel form (4) and outer corral purlin steel form (3) form by polylith set shaped steel formwork (5) spelling, and adjacent set shaped steel formwork (5) holds cribbing fastening structure by pressure; This formwork structure is also provided with the truss support mechanism for reinforcing and support interior corral purlin steel form (4) and outer corral purlin steel form (3); It is characterized in that, described truss support mechanism comprises and the first truss sheet (9) of the circle core shaft of interior corral purlin steel form (4) in collinear main steel pipe (12) and many fan-shaped layouts, one end of first truss sheet (9) is connected with main steel pipe (12), and the other end of the first truss sheet (9) is through interior corral purlin steel form (4) and outer corral purlin steel form (3).
2. the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam according to claim 1, is characterized in that, described outer corral purlin steel form (3) is corrugated with the lower limb of interior corral purlin steel form (4).
3. the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam according to claim 1, it is characterized in that, the second truss sheet (10) that described truss support mechanism is also provided with lateral arrangement and the 3rd truss sheet (11) longitudinally arranged, one end of the second truss sheet (10) and one end junction of the 3rd corresponding truss sheet (11) are on the first truss sheet (9).
4. the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam according to claim 1, it is characterized in that, described first truss sheet (9) arranges steel pipe of vertically putting more energy into (13) with the intersection of interior corral purlin steel form (4) and outer corral purlin steel form (3), and between steel pipe of vertically putting more energy into (13) and the first truss sheet, arrange oblique steel pipe of putting more energy into (14).
5. the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam according to claim 1 or 2, it is characterized in that, described pressure is held cribbing structure and is comprised horizontal steel tube (7) and vertical steel pipe (8), described horizontal steel tube (7) abuts against the lateral surface of outer corral purlin steel form (3) and interior corral purlin steel form (4), and described vertical steel pipe (8) abuts against corresponding horizontal steel tube (7) outside.
6. the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam according to claim 5, it is characterized in that, described vertical steel pipe (8) arranges Screw arbor with nut at both-ends (1) with the intersection of horizontal steel tube (7), and the pressure that the two ends of Screw arbor with nut at both-ends (1) are fixed on outer corral purlin steel form (3) and interior corral purlin steel form (4) correspondence respectively by nut (2) is held in cribbing structure.
7. the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam according to claim 6, it is characterized in that, described Screw arbor with nut at both-ends (1) side that corral purlin steel form (3) is relative with interior corral purlin steel form (4) outside arranges Screw arbor with nut at both-ends limit rib (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051198.6A CN103758143B (en) | 2014-02-14 | 2014-02-14 | Formwork structure of bridge foundation underwater concrete continuous wall cofferdam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410051198.6A CN103758143B (en) | 2014-02-14 | 2014-02-14 | Formwork structure of bridge foundation underwater concrete continuous wall cofferdam |
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| Publication Number | Publication Date |
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| CN103758143A CN103758143A (en) | 2014-04-30 |
| CN103758143B true CN103758143B (en) | 2015-06-24 |
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| CN201410051198.6A Expired - Fee Related CN103758143B (en) | 2014-02-14 | 2014-02-14 | Formwork structure of bridge foundation underwater concrete continuous wall cofferdam |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523243A (en) * | 2019-09-19 | 2021-03-19 | 派利有限公司 | Caisson template |
| CN114000525B (en) * | 2021-11-23 | 2023-08-22 | 中国二十二冶集团有限公司 | Construction method of underwater tie beam |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225663A (en) * | 2008-01-31 | 2008-07-23 | 山东省路桥集团有限公司 | Steel boxed cofferdam and recovery method thereof |
| CN101235648A (en) * | 2008-01-04 | 2008-08-06 | 贵州省桥梁工程总公司 | Underwater bridge foundation construction method |
| CN201334671Y (en) * | 2008-12-26 | 2009-10-28 | 中铁大桥局股份有限公司 | Assembled cofferdam |
| CN201372439Y (en) * | 2008-09-24 | 2009-12-30 | 中铁大桥局集团第五工程有限公司 | Single-wall and double-wall combined steel cofferdam |
| US8066449B2 (en) * | 2002-07-18 | 2011-11-29 | Aubian Engineering, Inc. | Method for dry isolation of a water passage of a dam |
| CN102839681A (en) * | 2012-08-31 | 2012-12-26 | 中铁三局集团有限公司 | Combined steel pipe pile cofferdam used under condition of no cover layer in deep water and construction method thereof |
| JP5389746B2 (en) * | 2010-06-15 | 2014-01-15 | 日立造船株式会社 | Watertight hardware for underwater provisional deadlines |
| CN203701116U (en) * | 2014-02-14 | 2014-07-09 | 湖南省建筑工程集团总公司 | Formwork structure of bridge foundation underwater concrete continuous wall cofferdam |
-
2014
- 2014-02-14 CN CN201410051198.6A patent/CN103758143B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8066449B2 (en) * | 2002-07-18 | 2011-11-29 | Aubian Engineering, Inc. | Method for dry isolation of a water passage of a dam |
| CN101235648A (en) * | 2008-01-04 | 2008-08-06 | 贵州省桥梁工程总公司 | Underwater bridge foundation construction method |
| CN101225663A (en) * | 2008-01-31 | 2008-07-23 | 山东省路桥集团有限公司 | Steel boxed cofferdam and recovery method thereof |
| CN201372439Y (en) * | 2008-09-24 | 2009-12-30 | 中铁大桥局集团第五工程有限公司 | Single-wall and double-wall combined steel cofferdam |
| CN201334671Y (en) * | 2008-12-26 | 2009-10-28 | 中铁大桥局股份有限公司 | Assembled cofferdam |
| JP5389746B2 (en) * | 2010-06-15 | 2014-01-15 | 日立造船株式会社 | Watertight hardware for underwater provisional deadlines |
| CN102839681A (en) * | 2012-08-31 | 2012-12-26 | 中铁三局集团有限公司 | Combined steel pipe pile cofferdam used under condition of no cover layer in deep water and construction method thereof |
| CN203701116U (en) * | 2014-02-14 | 2014-07-09 | 湖南省建筑工程集团总公司 | Formwork structure of bridge foundation underwater concrete continuous wall cofferdam |
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| CN103758143A (en) | 2014-04-30 |
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