CN210887263U - Double steel sheet pile cofferdam construction structures under rock riverbed condition - Google Patents
Double steel sheet pile cofferdam construction structures under rock riverbed condition Download PDFInfo
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- CN210887263U CN210887263U CN201921743428.XU CN201921743428U CN210887263U CN 210887263 U CN210887263 U CN 210887263U CN 201921743428 U CN201921743428 U CN 201921743428U CN 210887263 U CN210887263 U CN 210887263U
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- steel sheet
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- cofferdam
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- sheet pile
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 239000011435 rock Substances 0.000 title claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000002969 artificial stone Substances 0.000 description 1
- 229910052571 earthenware Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The utility model discloses a double-row steel sheet pile cofferdam construction structure under the condition of a rocky riverbed; the method is characterized in that: the base layer comprises a medium weathering layer (1), a strong weathering layer (2) and a pebble covering layer (3); two layers of inner support systems are arranged in the cofferdam, and each layer of inner support is provided with a corresponding wailing and a support rod; double rows of steel sheet piles are formed by the inner layer steel sheet piles (4) and the outer layer steel sheet piles (5), the steel sheet piles are used as cofferdam unit structures, and concrete cap beams (6) with the thickness of 30cm are poured at the tops of the double rows of steel sheet piles to enhance the integrity of the double rows of structures; concrete is poured in holes between the wailing and the steel plate piles, and uniform stress of the internal bracing system is guaranteed. The suitability of steel sheet pile under rock matter riverbed has been solved to this patent, has strengthened cofferdam overall stability and security, has reduced construction cost simultaneously, has increased the construction work efficiency.
Description
Technical Field
The utility model relates to an earthenware rock cofferdam construction field, particularly the construction structure who uses double steel sheet pile cofferdam novel structure under the rock riverbed condition.
Background
The steel sheet pile has the characteristics of flexible structure form, convenient construction, high utilization rate and the like, is widely applied to the underwater foundation construction of weak stratums in coastal regions, but is limited to be used under the condition of rock riverbeds in southwest regions of China. By using the novel structure of the double-row steel sheet pile cofferdam under the condition of the rocky riverbed, the applicability of the steel sheet piles under the rocky riverbed is solved, the overall stability and the safety of the cofferdam are enhanced, the construction cost is reduced, and the construction efficiency is increased.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above insufficiency, the utility model provides a double steel sheet pile cofferdam construction under rock mass riverbed condition structure here. The applicability of the steel sheet pile under the rocky riverbed is solved, the overall stability and safety of the cofferdam are enhanced, meanwhile, the construction cost is reduced, and the construction efficiency is increased.
The utility model is realized in such a way that a double-row steel sheet pile cofferdam construction structure under the condition of the rocky riverbed is constructed; the method is characterized in that: the base layer comprises a medium weathering layer, a strong weathering layer and a pebble covering layer; two layers of inner support systems are arranged in the cofferdam, and each layer of inner support is provided with a corresponding wailing and a support rod; the double-row steel sheet piles are formed by the inner-layer steel sheet piles and the outer-layer steel sheet piles, the steel sheet piles are used as cofferdam unit structures, and concrete cap beams with the thickness of 30cm are poured at the tops among the double-row steel sheet piles to enhance the integrity of the double-row structures; concrete is poured in holes between the wailing and the steel plate piles, and uniform stress of the internal bracing system is guaranteed.
The double-row steel sheet pile cofferdam construction structure under the condition of the rocky riverbed is characterized in that a concrete anchoring ring beam with the cross section of 0.5m × 1m is poured at the root part of the steel sheet pile.
The utility model has the advantages of as follows: 1. the steel sheet pile construction is convenient and fast, the efficiency is high, and the construction method has obvious advantages in cost compared with the secant pile or double-wall cofferdam of the conventional rock river bed underwater foundation construction process;
2. the steel sheet pile is adopted as a cofferdam unit structure, and the driving performance under the rocky condition can be guaranteed to be 0.5-1 m;
3. the cofferdam is ensured to have overall safety and stability performance under smaller anchoring depth by adopting measures such as a double-row steel sheet pile structure, a row top cap beam, a steel sheet pile root anchoring ring beam and the like.
Drawings
FIG. 1 is a plan view of a double row steel sheet pile cofferdam
Fig. 2 is an elevation view of a double row steel sheet pile cofferdam.
Wherein: the artificial stone comprises an intermediate weathered layer 1, a strongly weathered layer 2 and a pebble covering layer 3; two layers of inner support systems are arranged in the cofferdam, and each layer of inner support is provided with a corresponding wailing and a support rod; the water-blocking wall is composed of an inner layer steel sheet pile 4, an outer layer steel sheet pile 5, a concrete cap beam 6, an anchoring ring beam 7, a first layer inner support 8, a second layer inner support 9, wails 10, an inner support A11, an inner support B12, an inner support C13, a transverse connection 14 and a water-blocking soil body 15.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings 1-2, 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 a double-row steel sheet pile cofferdam construction structure under the condition of the rocky riverbed through improvement; the base layer comprises a medium weathering layer 1, a strong weathering layer 2 and a pebble covering layer 3; two layers of inner support systems are arranged in the cofferdam, and each layer of inner support is provided with a corresponding wailing and a support rod; double rows of steel sheet piles are formed by the inner layer of steel sheet piles 4 and the outer layer of steel sheet piles 5, the steel sheet piles are used as cofferdam unit structures, and concrete cap beams 6 with the thickness of 30cm are poured at the tops among the double rows of steel sheet piles to enhance the integrity of the double rows of structures; concrete is poured in holes between the wailing and the steel plate piles, and uniform stress of the internal bracing system is guaranteed.
According to the utility model discloses a double steel sheet pile cofferdam construction under rock riverbed condition constructs, steel sheet pile root pours the concrete anchor collar tie beam 7 that the cross-section is 0.5m × 1 m.
The implementation steps of the patent are as follows:
positioning a guide frame, and inserting and driving the steel sheet piles in the inner row to 50-100cm designed rock-socketed by a hydraulic vibration hammer;
secondly, installing a guide frame for positioning according to the row spacing of the steel sheet piles of 1.5m, and inserting and driving the externally-arranged steel sheet piles to the design rock-socketed distance of 50-100cm by a hydraulic vibration hammer;
thirdly, concrete cap beams with the thickness of 30cm are poured at the tops among the double rows of steel plate piles to enhance the integrity of the double rows of structures;
fourthly, two layers of inner support systems are arranged in the cofferdam, and corresponding wailing and a stay bar are installed when each layer of inner support is excavated;
fifthly, pouring concrete in the holes between the wails and the steel plate piles to ensure that the internal bracing system is uniformly stressed;
and (VI) excavating to a rock layer surface, binding and installing reinforcing steel bars, and pouring the steel sheet pile root concrete anchoring ring beam with the section of 0.5m × 1 m.
Through the implementation of this patent:
1. the steel sheet pile construction is convenient and fast, the efficiency is high, and the construction method has obvious advantages in cost compared with the secant pile or double-wall cofferdam of the conventional rock river bed underwater foundation construction process;
2. the steel sheet pile is adopted as a cofferdam unit structure, and the driving performance under the rocky condition can be guaranteed to be 0.5-1 m;
3. the cofferdam is ensured to have overall safety and stability performance under smaller anchoring depth by adopting measures such as a double-row steel sheet pile structure, a row top cap beam, a steel sheet pile root anchoring ring beam and the like.
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 (2)
1. The utility model provides a double steel sheet pile cofferdam construction structures under rock matter riverbed condition which characterized in that: the base layer comprises a medium weathering layer (1), a strong weathering layer (2) and a pebble covering layer (3); two layers of inner support systems are arranged in the cofferdam, and each layer of inner support is provided with a corresponding wailing and a support rod; double rows of steel sheet piles are formed by the inner layer steel sheet piles (4) and the outer layer steel sheet piles (5), the steel sheet piles are used as cofferdam unit structures, and concrete cap beams (6) with the thickness of 30cm are poured at the tops of the double rows of steel sheet piles to enhance the integrity of the double rows of structures; concrete is poured in holes between the wailing and the steel plate piles, and uniform stress of the internal bracing system is guaranteed.
2. The double-row steel sheet pile cofferdam construction structure under the condition of the rocky riverbed as claimed in claim 1, wherein the concrete anchoring ring beam (7) with the section of 0.5m × 1m is poured at the root of the steel sheet pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921743428.XU CN210887263U (en) | 2019-10-17 | 2019-10-17 | Double steel sheet pile cofferdam construction structures under rock riverbed condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921743428.XU CN210887263U (en) | 2019-10-17 | 2019-10-17 | Double steel sheet pile cofferdam construction structures under rock riverbed condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210887263U true CN210887263U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921743428.XU Active CN210887263U (en) | 2019-10-17 | 2019-10-17 | Double steel sheet pile cofferdam construction structures under rock riverbed condition |
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| CN (1) | CN210887263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113832998A (en) * | 2021-09-22 | 2021-12-24 | 中交路桥华南工程有限公司 | Pebble covering layer steel sheet pile cofferdam system and construction method thereof |
-
2019
- 2019-10-17 CN CN201921743428.XU patent/CN210887263U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113832998A (en) * | 2021-09-22 | 2021-12-24 | 中交路桥华南工程有限公司 | Pebble covering layer steel sheet pile cofferdam system and construction method thereof |
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