CN113216234B - Construction method of open caisson bottom sealing and bottom plate connecting device - Google Patents
Construction method of open caisson bottom sealing and bottom plate connecting device Download PDFInfo
- Publication number
- CN113216234B CN113216234B CN202110549154.6A CN202110549154A CN113216234B CN 113216234 B CN113216234 B CN 113216234B CN 202110549154 A CN202110549154 A CN 202110549154A CN 113216234 B CN113216234 B CN 113216234B
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- Prior art keywords
- open caisson
- connecting device
- bottom plate
- sealing concrete
- pouring
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/16—Jointing caissons to the foundation soil, specially to uneven foundation soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
Abstract
The invention discloses a construction method of a device for connecting a bottom seal and a bottom plate of an open caisson. The construction method comprises the following steps: firstly, sinking the open caisson structure to a designed elevation, and cleaning and trimming the bottom of the open caisson structure after the open caisson structure is stable; step two, hoisting the connecting device to be below a designed elevation to ensure that the grapple is opened; lifting the connecting device to a designed elevation to enable the grapple to hook the bottom end of the blade leg; fourthly, erecting pouring equipment of the bottom sealing concrete, and pouring the bottom sealing concrete; step five, after bottom sealing concrete pouring is finished, pumping water in the open caisson structure; and step six, pouring a bottom plate. On the premise of meeting the stress requirement, the self-weight of the bottom sealing concrete can effectively participate in the permanent anti-floating of the open caisson structure, the workload of steel bar planting and the like is reduced, and the requirements of convenient construction operation and no increase of the construction period are met.
Description
Technical Field
The invention relates to the technical field of open caisson, in particular to a construction method of a device for connecting an open caisson sealing bottom and a bottom plate.
Background
Open caisson is a mature construction technology, and is widely applied to the fields of drainage engineering structures, structural foundations, foundation pit support and the like. Because the open caisson structure is often located in water or in a field where groundwater is present, the open caisson must meet the anti-floating requirement. For the open caisson adopting the underwater bottom sealing, in order to meet the anti-floating design, measures are sometimes taken to connect the bottom sealing concrete and the bottom plate. The following two common connection methods are available: one is to carry out drawknot on the bottom plate and the bottom sealing concrete in a mode of planting bars after the bottom sealing concrete is poured and water in the well is pumped; one is to immerse the concrete into water by a diver after pouring the bottom sealing concrete and before the initial setting of the concrete, and reserve the dowel bars on the top surface of the bottom sealing concrete by adopting an underwater positioning device according to the design requirements.
The connection of the bottom sealing concrete and the bottom plate can be completed by adopting the method, but the method also has obvious defects that: by adopting the form of bar planting, the length of the steel bar entering the bottom sealing concrete is not too long and cannot be bent, and the connection effect with the bottom sealing concrete is difficult to ensure; meanwhile, the embedded steel bars need to be poured in the bottom sealing concrete and are poured after water in the well is drained, the anti-floating risk of the structure is the largest, the pouring of the bottom plate is delayed due to the construction of the embedded steel bars, and the risk is increased while the construction period is prolonged. Adopt the diver to sneak into the form of placing the dowel bar in water before the initial set of bottom sealing concrete, the construction degree of difficulty is big, and the quality is difficult to guarantee, and the construction risk is very big when meetting the ultra-deep open caisson, may threaten diver's life safety.
The person skilled in the art is dedicated to solving the above technical drawbacks.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, a technical object of the present invention is to solve the problems mentioned in the above-mentioned background art.
In order to achieve the technical purpose, the invention provides a construction method of a connecting device of an open caisson back cover and a bottom plate, wherein the connecting device comprises vertical ribs, a water stop plate, a framework, a connecting device, a grapple, a counterweight, an open caisson structure, a blade foot, back cover concrete and the bottom plate;
one end of the vertical rib is connected to the framework, the framework is connected with the grapple through the connecting device, the grapple hooks the bottom end of the blade foot, the blade foot is arranged at the bottom end of the open caisson structure, the bottom of the framework is provided with a balance weight, the bottom sealing concrete is poured around the framework, the top of the bottom sealing concrete is provided with the bottom plate, and the other end of the vertical rib is anchored in the bottom plate;
the construction method at least comprises the following steps:
firstly, sinking the open caisson structure to a designed elevation, and cleaning and trimming the bottom of the open caisson structure after the open caisson structure is stable;
secondly, hoisting the connecting device to be below a designed elevation to ensure that the grapple is opened;
step three, lifting the connecting device to a designed elevation, and enabling the grapple to hook the bottom end of the blade foot;
fourthly, erecting pouring equipment of the bottom sealing concrete, and pouring the bottom sealing concrete;
step five, after bottom sealing concrete pouring is finished, pumping water in the open caisson structure;
and step six, finally pouring the bottom plate.
Preferably, the vertical ribs, the water stop plate and the framework are all steel structures.
Preferably, the connecting means is a one-way hinge.
The invention has the beneficial effects that:
due to the design, on the premise of meeting the stress requirement, the self weight of the bottom sealing concrete can be ensured to effectively participate in the permanent anti-floating of the open caisson structure, the workload of bar planting and the like is reduced, and the requirements of convenient construction operation and no increase of the construction period are met.
Drawings
FIG. 1 is a schematic front view of an embodiment of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of the first step of the present invention;
FIG. 4 is a schematic view of the construction in step two of the present invention;
FIG. 5 is a schematic view of the construction in step three of the present invention;
FIG. 6 is a schematic view of the construction of step four of the present invention;
FIG. 7 is a schematic construction diagram of the fifth step and the sixth step of the present invention.
In the figure: the device comprises 1 vertical rib, 2 water stop plates, 3 frameworks, 4 connecting devices, 5 grapples, 6 balance weights, 7 open caisson structures, 8 edge feet, 9 bottom sealing concrete and 10 bottom plates.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Example (b):
as shown in fig. 1-2, a device for connecting bottom sealing and bottom plate of an open caisson comprises vertical ribs 1, a water stop plate 2, a framework 3, a connecting device 4, a grapple 5, a counterweight 6, an open caisson structure 7, a blade foot 8, bottom sealing concrete 9 and a bottom plate 10;
the one end of vertical muscle 1 is connected on skeleton 3, and skeleton 3 is connected with grapple 5 through connecting device 4, and grapple 5 catches on the bottom of sword foot 8, and sword foot 8 sets up in open caisson structure 7's bottom, and the bottom of skeleton 3 is provided with counter weight 6, has pour the back cover concrete 9 around the skeleton 3, and the top of back cover concrete 9 is provided with bottom plate 10, and the other end anchor of vertical muscle 1 is in bottom plate 10.
Specifically, the vertical ribs 1, the water stop plates 2 and the framework 3 are all steel structures.
In particular, the connection means 4 is a one-way hinge.
As shown in fig. 3 to 7, a construction method of a device for connecting a bottom seal and a bottom plate of an open caisson comprises the following steps:
firstly, sinking the open caisson structure 7 to a designed elevation, and cleaning and trimming the bottom of the open caisson structure 7 after the open caisson structure 7 is stabilized;
secondly, hoisting the connecting device 4 to a height which is about 1 to 1.5m below the designed elevation to ensure that the grapple 5 is opened;
step three, lifting the connecting device 4 to ensure that the length of the vertical rib 1 in the bottom plate meets the requirement of anchoring length, and hooking the bottom end of the blade foot 8 by the grapple 5;
fourthly, erecting a pouring platform and related equipment of the bottom sealing concrete 9, and pouring the bottom sealing concrete 9;
step five, after the pouring strength of the bottom sealing concrete 9 reaches the design requirement, pumping out water in the open caisson structure 7;
and step six, finally pouring the bottom plate 10.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection determined by the claims.
Claims (3)
1. A construction method of a device for connecting a bottom seal and a bottom plate of an open caisson is characterized in that: the connecting device comprises vertical ribs, a water stop plate, a framework, a connecting device, a grapple, a balance weight, an open caisson structure, a blade foot, bottom sealing concrete and a bottom plate; one end of the vertical rib is connected to the framework, the framework is connected with the grapple through the connecting device, the grapple hooks the bottom end of the blade foot, the blade foot is arranged at the bottom end of the open caisson structure, the bottom of the framework is provided with a balance weight, the bottom sealing concrete is poured around the framework, the top of the bottom sealing concrete is provided with the bottom plate, and the other end of the vertical rib is anchored in the bottom plate;
the construction method at least comprises the following steps:
firstly, sinking the open caisson structure to a designed elevation, and cleaning and trimming the bottom of the open caisson structure after the open caisson structure is stable;
secondly, hoisting the connecting device to be below a designed elevation to ensure that the grapple is opened;
step three, lifting the connecting device to a designed elevation, and enabling the grapple to hook the bottom end of the blade foot;
fourthly, erecting pouring equipment of the bottom sealing concrete, and pouring the bottom sealing concrete;
step five, after bottom sealing concrete pouring is finished, pumping water in the open caisson structure;
and step six, finally pouring the bottom plate.
2. The construction method of the open caisson closing bottom and bottom plate connecting device according to claim 1, wherein: the vertical ribs, the water stop plate and the framework are all steel structures.
3. The construction method of the open caisson closing bottom and bottom plate connecting device according to claim 1, wherein: the connecting device is a one-way hinge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110549154.6A CN113216234B (en) | 2021-05-20 | 2021-05-20 | Construction method of open caisson bottom sealing and bottom plate connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110549154.6A CN113216234B (en) | 2021-05-20 | 2021-05-20 | Construction method of open caisson bottom sealing and bottom plate connecting device |
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| Publication Number | Publication Date |
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| CN113216234A CN113216234A (en) | 2021-08-06 |
| CN113216234B true CN113216234B (en) | 2023-02-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635442B (en) * | 2022-01-26 | 2023-05-16 | 中铁十五局集团有限公司 | Reinforcement cage installation method for improving working performance of open caisson bottom sealing plain concrete |
| CN115162413A (en) * | 2022-07-27 | 2022-10-11 | 中铁第四勘察设计院集团有限公司 | Anti-floating structure suitable for mechanical construction of vertical shaft and construction method thereof |
| CN115369902B (en) * | 2022-08-12 | 2023-07-18 | 中国一冶集团有限公司 | Water-rich geological open caisson structure and construction method thereof |
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| JP2001271364A (en) * | 2000-03-27 | 2001-10-05 | Akemi Ishikawa | Decoration finished panel material |
| CN101311421A (en) * | 2006-01-26 | 2008-11-26 | 安徽省高速公路总公司 | Radical anchorage and construction method thereof |
| CN102392660A (en) * | 2011-09-29 | 2012-03-28 | 辽宁工程技术大学 | Three-dimensional pressure-relieving supporting method for prolonging service lives of deep soft rock supports |
| CN205475605U (en) * | 2016-03-04 | 2016-08-17 | 郑州市亚源塑胶有限公司 | Anti floating plastic sinks mud inspection shaft |
| CN111155543A (en) * | 2020-01-21 | 2020-05-15 | 中国水利水电第七工程局有限公司 | Open caisson isolation bottom die wet type bottom sealing structure and construction method thereof |
| CN211973546U (en) * | 2020-04-11 | 2020-11-20 | 佛山市皓信达建设工程有限公司 | Open caisson with waterproof structure |
-
2021
- 2021-05-20 CN CN202110549154.6A patent/CN113216234B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001271364A (en) * | 2000-03-27 | 2001-10-05 | Akemi Ishikawa | Decoration finished panel material |
| CN101311421A (en) * | 2006-01-26 | 2008-11-26 | 安徽省高速公路总公司 | Radical anchorage and construction method thereof |
| CN102392660A (en) * | 2011-09-29 | 2012-03-28 | 辽宁工程技术大学 | Three-dimensional pressure-relieving supporting method for prolonging service lives of deep soft rock supports |
| CN205475605U (en) * | 2016-03-04 | 2016-08-17 | 郑州市亚源塑胶有限公司 | Anti floating plastic sinks mud inspection shaft |
| CN111155543A (en) * | 2020-01-21 | 2020-05-15 | 中国水利水电第七工程局有限公司 | Open caisson isolation bottom die wet type bottom sealing structure and construction method thereof |
| CN211973546U (en) * | 2020-04-11 | 2020-11-20 | 佛山市皓信达建设工程有限公司 | Open caisson with waterproof structure |
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| CN113216234A (en) | 2021-08-06 |
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