CN217580241U - Bridge cofferdam anti-floating structure - Google Patents
Bridge cofferdam anti-floating structure Download PDFInfo
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- CN217580241U CN217580241U CN202221311704.7U CN202221311704U CN217580241U CN 217580241 U CN217580241 U CN 217580241U CN 202221311704 U CN202221311704 U CN 202221311704U CN 217580241 U CN217580241 U CN 217580241U
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- cofferdam
- bottom plate
- bridge
- floating structure
- rock anchor
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- 239000011435 rock Substances 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000010276 construction Methods 0.000 abstract description 19
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000009434 installation Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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Abstract
The utility model discloses an anti-floating structure of a bridge cofferdam; it is characterized in that; the bridge cofferdam anti-floating structure is provided with a rock anchor point, a cofferdam wall plate, a cofferdam internal support and a cofferdam bottom plate; the cofferdam inner support is arranged inside the cofferdam wall plate and the cofferdam bottom plate, the cofferdam bottom plate arranged at the bottom is fixedly connected with the pile foundation, and the force transmission effect is achieved by connecting the cofferdam bottom plate with the cofferdam. The utility model provides an anti-floating structure of a bridge cofferdam; optimize cofferdam structural design and alleviate cofferdam structure dead weight, reduce cofferdam back cover concreting, reduce the pile foundation atress, improve structural safety type and construction safety.
Description
Technical Field
The utility model relates to a bridge cofferdam implements relevant technical field, and specifically what relate to is an anti structure of floating of bridge cofferdam.
Background
The existing cofferdam anti-floating generally adopts measures of increasing the self weight of the cofferdam, adding water, increasing the amount of bottom sealing concrete, fully cleaning a river bed to ensure that the bottom sealing concrete is in a water-free state and the like; the existing defects are as follows: (1) the self-weight of the cofferdam is insufficient: the material investment is increased, which is not economical. Or the steel cofferdam is changed into the concrete cofferdam to increase the dead weight, but the construction of the concrete cofferdam with large dead weight is inconvenient, such as the integral type of the block concrete is poor, the block concrete is unsafe, water leakage is easy, and the like.
(2) The water adding shortage of the cofferdam: the water addition has limitation and can only be used on the double-wall cofferdam with the double-wall.
(3) Increase the deficiency of the amount of the back cover concrete: the increase of the consumption of the bottom sealing concrete is not economical, the consumption of the bottom sealing concrete is large for large-volume concrete, the hydration heat is large, the concrete is easy to crack and damage, the integrity is poor, and the quality and the safety problems exist. In addition, if the high pile cap and the sealing bottom are easily flushed, the requirement on pile foundation supporting is high, the requirement on cutting the bottom plate of the sealing bottom is also high, the cost and the construction difficulty are increased, and the sealing bottom plays a negative role in later-stage operation of the bridge as additional weight.
(4) The riverbed is fully cleaned to ensure the deficiency of the water-free state under the bottom sealing concrete: the underwater cleaning of the riverbed is difficult to really achieve, and the underwater bottom sealing concrete pouring can also generate floating slurry and the like to cause the situations of later-stage water leakage and the like. And underwater cleaning is time-consuming, labor-consuming and poor in effect, and is not economical.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned deficiencies, the utility model provides an anti-floating structure of bridge cofferdam; optimize cofferdam structural design and alleviate cofferdam structure dead weight, reduce cofferdam back cover concreting, reduce the pile foundation atress, improve structural safety type and construction safety.
The utility model is realized in such a way that an anti-floating structure of the bridge cofferdam is constructed, which is characterized in that; the bridge cofferdam anti-floating structure is provided with a rock anchor point, a cofferdam wall plate, a cofferdam internal support and a cofferdam bottom plate; the cofferdam inner support is arranged inside the cofferdam wall plate and the cofferdam bottom plate, the cofferdam bottom plate arranged at the bottom is fixedly connected with the pile foundation, and the force transmission effect is achieved by connecting the cofferdam bottom plate with the cofferdam.
The bridge cofferdam anti-floating structure is characterized in that the bridge cofferdam is provided with a plurality of floating plates; the cofferdam bottom plate is constructed by profile steel; the cofferdam bottom plate is provided with rock anchor points and bottom plate pile foundation preformed holes.
The bridge cofferdam anti-floating structure is characterized in that the bridge cofferdam is provided with a plurality of floating plates; the cofferdam wall plate is constructed by profile steel; the cofferdam wallboard is provided with rock anchor points, a bottom plate, wallboard reinforced vertical rib reinforced section steel, wallboard horizontal ring rib reinforced section steel and a cofferdam plate unit.
The utility model has the advantages of as follows: the cofferdam anti-floating is provided through the rock anchor, the stress of the cofferdam is simple and clear, and the construction is relatively simple and efficient. The construction can be carried out by taking the cofferdam as a rock anchor construction platform in the cofferdam construction and installation stage (when water is not pumped). And the construction can be parallel to the related construction work of the cofferdam without occupying the construction period. The most remarkable advantage of the rock anchor in providing buoyancy resistance compared with other modes is that the rock anchor is outstanding in economy and higher in safety factor. The installation of the rock anchor provides prestressing force for the cofferdam, so that the water pressure resistance of the cofferdam is improved, the safety of the cofferdam structure is further improved, and meanwhile, the construction cost of the cofferdam can be further saved, and the economical efficiency is higher.
Drawings
FIG. 1 is an overall view of the cofferdam;
fig. 2 is a structural diagram of a bottom plate of the cofferdam of the utility model;
fig. 3 is a structural diagram of the cofferdam wall plate of the utility model.
Wherein: rock anchor point 1, cofferdam wallboard 2, cofferdam internal stay 3, cofferdam bottom plate 4, bottom plate pile foundation preformed hole 5, bottom plate 6, vertical rib enhancement shaped steel 7 is strengthened to the wallboard, wallboard horizontal ring rib enhancement shaped steel 8, cofferdam board unit 9.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings 1-3, wherein the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides an anti-floating structure of bridge cofferdam through improvement, as shown in figures 1-3, can be implemented as follows; the bridge cofferdam anti-floating structure is provided with a rock anchor point 1, a cofferdam wallboard 2, a cofferdam internal stay 3 and a cofferdam bottom plate 4; the cofferdam inner support 3 is arranged inside the cofferdam wall plate 2 and the cofferdam bottom plate 4, the cofferdam bottom plate 4 arranged at the bottom is fixedly connected with the pile foundation, and the force transferring effect is achieved by connecting the cofferdam bottom plate 4 with the cofferdam.
When the utility model is implemented; the cofferdam bottom plate 4 is constructed by profile steel; the cofferdam bottom plate 4 is provided with rock anchor points 1 and bottom plate pile foundation preformed holes 5.
When the utility model is implemented; the cofferdam wall plate 2 is constructed by profile steel; the cofferdam wallboard 2 is provided with a rock anchor point 1, a bottom plate 6, a wallboard reinforcing vertical rib reinforcing steel 7, a wallboard horizontal ring rib reinforcing steel 8 and a cofferdam board unit 9.
The utility model discloses be different from general cofferdam anti-floating, this product adopts and sets up the rock anchor on the riverbed and provides anti buoyancy for the cofferdam, strengthens the design at the rock anchor point in cofferdam, guarantees that the anti buoyancy effort that the rock anchor provided evenly transmits the cofferdam, sets up the bottom plate platform and is connected fixedly with the pile foundation in the bottom in cofferdam to be connected through bottom plate platform and cofferdam and play biography power effect.
The advantage and the beneficial effect of this patent embody: the cofferdam anti-floating is provided through the rock anchor, the stress of the cofferdam is simple and clear, and the construction is relatively simple and efficient. The construction can be carried out by taking the cofferdam as a rock anchor construction platform in the cofferdam construction and installation stage (when water is not pumped). And the construction can be parallel to the related construction work of the cofferdam, and the construction period is not occupied. The most remarkable advantage of the rock anchor in providing buoyancy resistance compared with other modes is that the rock anchor is outstanding in economy and higher in safety factor. The installation of rock anchor provides prestressing force for the cofferdam, makes the cofferdam resist water pressure and improves, further improves the security of cofferdam structure, and the cost economic nature that can further practice thrift the cofferdam simultaneously is higher.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. An anti-floating structure of a bridge cofferdam is characterized in that; the bridge cofferdam anti-floating structure is provided with rock anchor points (1), cofferdam wall plates (2), cofferdam internal supports (3) and a cofferdam bottom plate (4); the cofferdam inner support (3) is arranged inside the cofferdam wall plate (2) and the cofferdam bottom plate (4), the cofferdam bottom plate (4) arranged at the bottom is fixedly connected with the pile foundation, and the force transferring effect is achieved by the connection of the cofferdam bottom plate (4) and the cofferdam.
2. The bridge cofferdam anti-floating structure of claim 1, wherein; the cofferdam bottom plate (4) is constructed by profile steel; the cofferdam bottom plate (4) is provided with rock anchor points (1) and bottom plate pile foundation preformed holes (5).
3. The bridge cofferdam anti-floating structure of claim 1, wherein; the cofferdam wall plate (2) is constructed by profile steel; the cofferdam wallboard (2) is provided with a rock anchor point (1), a bottom plate (6), a wallboard reinforced vertical rib reinforced section steel (7), a wallboard horizontal ring rib reinforced section steel (8) and a cofferdam plate unit (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221311704.7U CN217580241U (en) | 2022-05-30 | 2022-05-30 | Bridge cofferdam anti-floating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221311704.7U CN217580241U (en) | 2022-05-30 | 2022-05-30 | Bridge cofferdam anti-floating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217580241U true CN217580241U (en) | 2022-10-14 |
Family
ID=83528586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221311704.7U Active CN217580241U (en) | 2022-05-30 | 2022-05-30 | Bridge cofferdam anti-floating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217580241U (en) |
-
2022
- 2022-05-30 CN CN202221311704.7U patent/CN217580241U/en active Active
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