CN203701116U - 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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- CN203701116U CN203701116U CN201420065927.9U CN201420065927U CN203701116U CN 203701116 U CN203701116 U CN 203701116U CN 201420065927 U CN201420065927 U CN 201420065927U CN 203701116 U CN203701116 U CN 203701116U
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- corral
- purlin
- steel form
- formwork
- steel
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Abstract
The utility model relates to the field of bridge building engineering, in particular to a formwork structure of a bridge foundation underwater concrete continuous wall cofferdam. The formwork structure comprises an inner circle surrounding purlin steel formwork and an outer circle surrounding purlin steel formwork which share the same circle center axis. The inner circle surrounding purlin steel formwork and the outer circle surrounding purlin steel formwork are both formed by a plurality of set-shaped steel formworks in a splicing mode, and adjacent set-shaped steel formworks are fastened through a pressure bearing type support structure. The formwork structure is further provided with truss supporting mechanisms which are used for reinforcing and supporting the inner circle surrounding purlin steel formwork and the outer circle surrounding purlin steel formwork. According to the formwork structure of the bridge foundation underwater concrete continuous wall cofferdam, the set-shaped steel formworks are used for forming the circular surrounding purlin steel formworks in a splicing mode, construction working and material loss can be reduced, a construction period can be shortened, economic benefit is obvious, the formwork structure can be suitable for a geological environment where water flow is gentle, water depth is not larger than 15 m, a riverbed covering layer is thin, and the base laccolite gradient is small, and benefit can be well achieved especially when the construction period is tight.
Description
Technical field
The utility model relates to bridge construction engineering field, is specially the formwork structure in a kind 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 when bridge foundation construction, conventionally adopts the measures such as cofferdam, open caisson, box to carry out waterproof, enclose water construction bridge foundation under water.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 when tight, as adopt 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 problems to be solved in the utility model 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 when tight, the formwork structure in a kind of bridge foundation underwater concrete diaphragm wall cofferdam that provides a kind of and can reduce construction working amount, reduce spillage of material, shorten the construction period, increase economic efficiency.
The technical solution of the utility model is, the formwork structure in a kind of bridge foundation underwater concrete diaphragm wall cofferdam, comprise interior corral purlin steel form and the outer corral purlin steel form of concentric axle, 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.
Hold cribbing and by fastening polylith set shaped steel formwork by pressure, for ensureing to enclose the effective connection between every set shaped steel formwork of purlin steel form, with bolts between described outer corral purlin steel form and every set shaped steel formwork of 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, enclose the gap of purlin steel form between lower water back wall purlin in place steel form lower limb and riverbed substrate laccolite for reducing, can not contour outer corral purlin steel form and interior corral purlin steel form be installed according to the actual landform at bridge foundation riverbed place.
Described truss support mechanism comprises and the circle core shaft of interior corral purlin steel form the first truss sheet in collinear main steel pipe and fan-shaped layout, one end of the first truss sheet is connected with main steel pipe, and the other end of the first truss sheet is through interior corral purlin steel form and outer corral purlin steel form.
The 3rd truss sheet that described truss support mechanism is also provided with the second truss sheet of lateral arrangement and longitudinally arranges, one end of the second truss sheet with one end junction of corresponding the 3rd truss sheet on the first truss sheet, ensure that truss support mechanism effectively supports and encloses purlin steel form, improves the stability of enclosing purlin steel form.
The interface place of described the first truss sheet and interior corral purlin steel form and outer corral purlin steel form arranges the steel pipe of vertically putting more energy into, and can effectively ensure the support of the first truss sheet and interior corral purlin steel form and outer corral purlin steel form; Between steel pipe and the first truss sheet, the oblique steel pipe of putting more energy into is set vertically putting more energy into, can effectively 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 corresponding horizontal steel tube outside, between adjacent vertical steel pipe, leaves spacing.
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 by nut respectively and pressure corresponding to interior corral purlin steel form 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.
On the described Screw arbor with nut at both-ends side that corral purlin steel form is relative with interior corral purlin steel form outside, Screw arbor with nut at both-ends limit rib is set.
Compared with prior art, the beneficial effect of the utility model type is: the formwork structure in bridge foundation underwater concrete diaphragm wall described in the utility model cofferdam, aim to provide the underwater concrete diaphragm wall cofferdam that a kind of bridge foundation construction is used, adopt set shaped steel formwork to be assembled into circle and enclose purlin steel form, can reduce construction working and spillage of material, shortening construction period, remarkable in economical benefits, 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 geological environment that Riverbed is thinner and substrate laccolite gradient is less, especially duration are nervous.Adopt circle to enclose purlin steel form and fan-shaped inner support truss is set, the lower water that is conducive to enclose purlin steel form is in place, and it is simple in structure, stressed clear and definite, is conducive to enclose the stable of purlin steel form.
Brief description of the drawings
Fig. 1 is the structural principle plan view of an embodiment of the utility model;
Fig. 2 is the structural principle side view of an embodiment of the utility model;
Fig. 3 is 1/4 plane figure that encloses purlin steel form described in the utility model;
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, the formwork structure in a kind of bridge foundation underwater concrete diaphragm wall cofferdam, comprise interior corral purlin steel form 4 and the outer corral purlin steel form 3 of concentric axle, interior corral purlin steel form 4 and outer corral purlin steel form 3 form by polylith set shaped steel formwork 5 spellings, with bolts between every 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 corresponding horizontal steel tube 7 outsides, between adjacent vertical steel pipe 8, phase 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 correspondences by nut 2 is respectively held in cribbing structure.
On 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, Screw arbor with nut at both-ends limit rib 6 is set.
As shown in Figure 3, truss support mechanism comprises and the circle core shaft of interior corral purlin steel form 4 the first truss sheet 9 in collinear main steel pipe 12 and many fan-shaped layouts, one end of the 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; Truss support mechanism be also provided with the second truss sheet 10 of lateral arrangement and one end of the 3rd truss sheet 11, the second truss sheets 10 longitudinally arranged with one end junction of corresponding the 3rd truss sheet 11 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 the oblique steel pipe 14 of putting more energy into is set 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 (8)
1. the formwork structure in a bridge foundation underwater concrete diaphragm wall cofferdam, comprise interior corral purlin steel form (4) and the outer corral purlin steel form (3) of concentric axle, it is characterized in that, 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 corral purlin steel form (4) in reinforcing and supporting 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. according to the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam described in claim 1 or 2, it is characterized in that, described truss support mechanism comprises and the circle core shaft of interior corral purlin steel form (4) the first truss sheet (9) in collinear main steel pipe (12) and many fan-shaped layouts, one end of the 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).
4. the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam according to claim 3, it is characterized in that, the 3rd truss sheet (11) that described truss support mechanism is also provided with the second truss sheet (10) of lateral arrangement and longitudinally arranges, one end of the second truss sheet (10) with one end junction of corresponding the 3rd truss sheet (11) on the first truss sheet (9).
5. the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam according to claim 3, it is characterized in that, described the first truss sheet (9) arranges the 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 the steel pipe of vertically putting more energy into (13) and the first truss sheet, the oblique steel pipe of putting more energy into (14) is set.
6. according to the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam described in 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.
7. the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam according to claim 6, 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 two ends of Screw arbor with nut at both-ends (1) are fixed on outer corral purlin steel form (3) by nut (2) respectively and pressure corresponding to interior corral purlin steel form (4) held in cribbing structure.
8. the formwork structure in bridge foundation underwater concrete diaphragm wall cofferdam according to claim 7, it is characterized in that, on 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, Screw arbor with nut at both-ends limit rib (6) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065927.9U CN203701116U (en) | 2014-02-14 | 2014-02-14 | Formwork structure of bridge foundation underwater concrete continuous wall cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065927.9U CN203701116U (en) | 2014-02-14 | 2014-02-14 | Formwork structure of bridge foundation underwater concrete continuous wall cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203701116U true CN203701116U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420065927.9U Withdrawn - After Issue CN203701116U (en) | 2014-02-14 | 2014-02-14 | Formwork structure of bridge foundation underwater concrete continuous wall cofferdam |
Country Status (1)
| Country | Link |
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| CN (1) | CN203701116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758143A (en) * | 2014-02-14 | 2014-04-30 | 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 CN201420065927.9U patent/CN203701116U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758143A (en) * | 2014-02-14 | 2014-04-30 | 湖南省建筑工程集团总公司 | Formwork structure of bridge foundation underwater concrete continuous wall cofferdam |
| CN103758143B (en) * | 2014-02-14 | 2015-06-24 | 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20150624 |
|
| RGAV | Abandon patent right to avoid regrant |