CN110565686A - Construction method for penetrating river channel under pipe gallery - Google Patents

Construction method for penetrating river channel under pipe gallery Download PDF

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Publication number
CN110565686A
CN110565686A CN201910806507.9A CN201910806507A CN110565686A CN 110565686 A CN110565686 A CN 110565686A CN 201910806507 A CN201910806507 A CN 201910806507A CN 110565686 A CN110565686 A CN 110565686A
Authority
CN
China
Prior art keywords
cofferdam
pipe gallery
steel sheet
construction method
river channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910806507.9A
Other languages
Chinese (zh)
Inventor
林统励
王令侠
李旭
谢玮
胡军
张爱花
方柯
陶亚成
刘幸福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Major Bridge Engineering Group Co Ltd MBEC
Original Assignee
China Railway Major Bridge Engineering Group Co Ltd MBEC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway Major Bridge Engineering Group Co Ltd MBEC filed Critical China Railway Major Bridge Engineering Group Co Ltd MBEC
Priority to CN201910806507.9A priority Critical patent/CN110565686A/en
Publication of CN110565686A publication Critical patent/CN110565686A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/02Restraining of open water
    • E02D19/04Restraining of open water by coffer-dams, e.g. made of sheet piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/10Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12Consolidating by placing solidifying or pore-filling substances in the soil
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/46Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil

Abstract

The invention relates to the technical field of pipe gallery construction, and discloses a construction method for penetrating a river channel under a pipe gallery, which comprises the following steps: s1: inserting and driving steel sheet piles from one bank of the river to the opposite bank to form a cofferdam until the end part of the cofferdam reaches a set position; s2: discharging water in the cofferdam, digging in the cofferdam to form a mounting groove, and mounting a pipe gallery in the mounting groove until the mounting groove is close to the end part of the cofferdam; s3: arranging a waterproof wall at the end part of the pipe gallery, partitioning the cofferdam into a transfer weir, enabling the end part of the pipe gallery 1 to be located in the transfer weir, and removing steel sheet piles outside the transfer weir; s4: inserting and driving steel sheet piles from the transfer weir to the opposite bank to form a next cofferdam, removing the steel sheet piles at the end of the previous cofferdam until the end of the next cofferdam is positioned at the next set position, and implementing the steps S2 and S3; s5: the step S4 is repeated until the pipe gallery is installed to the opposite shore. The invention effectively solves the problems of poor applicability of the diversion method, environment damage caused by the segmented earth cofferdam method and high cost of the pipe jacking construction method.

Description

Construction method for penetrating river channel under pipe gallery
Technical Field
The invention relates to the technical field of pipe gallery construction, in particular to a construction method for penetrating a river channel under a pipe gallery.
Background
Pipe gallery, i.e. the corridor of the pipeline. The utility tunnel is an underground urban pipeline utility tunnel, namely, a tunnel space is built underground in a city, various engineering pipelines such as electric power, communication, gas, heat supply, water supply and drainage and the like are integrated, a special overhaul port, a lifting port and a monitoring system are arranged, unified planning, unified design, unified construction and management are implemented, the utility tunnel is an important infrastructure and a 'lifeline' for guaranteeing urban operation, and the city is beautified while the maintenance is convenient.
the traditional methods comprise a pipe jacking construction method, a sectional earth cofferdam or earth bag cofferdam method, a diversion method and the like, wherein the diversion method firstly excavates a diversion canal at a place outside the pipe gallery area around the existing river channel, and has poor applicability in cities or under the condition of large river channel flow. The segmented earth cofferdam method needs to fill earth in a large range in a river channel, so that the damage to the environment of the river channel is large, and meanwhile, the earthwork transportation in and out is not beneficial to environmental protection and civilized construction. The pipe jacking construction method needs to excavate a deep vertical shaft, and the cost of pipe jacking equipment and process is very high.
disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a construction method for penetrating a river channel under a pipe gallery, which can effectively solve the problems of poor applicability of a diversion method, environmental damage caused by a segmented earth cofferdam method and high cost of a pipe jacking construction method.
in order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a construction method for penetrating a river channel under a pipe gallery comprises the following steps:
S1: inserting and driving steel sheet piles from one bank of the river to the opposite bank to form a cofferdam until the end part of the cofferdam reaches a set position;
s2: discharging water in the cofferdam, digging in the cofferdam to form a mounting groove, and mounting a pipe gallery 1 in the mounting groove until the mounting groove is close to the end part of the cofferdam;
s3: arranging a waterproof wall at the end part of the pipe gallery 1, partitioning the cofferdam into a transfer weir, enabling the end part of the pipe gallery 1 to be positioned in the transfer weir, and removing steel sheet piles outside the transfer weir;
s4: inserting and driving steel sheet piles from the transfer weir to the opposite bank to form a next cofferdam, removing the steel sheet piles at the end of the previous cofferdam until the end of the next cofferdam is positioned at the next set position, and implementing the steps S2 and S3;
s5: the step S4 is repeated until the pipe gallery 1 is installed to the opposite shore.
On the basis of the above technical solution, the step S2 specifically includes:
A first cofferdam inner support and an enclosing purlin are arranged above the cofferdam;
Erecting a construction platform on the purlin to reinforce the foundation of the rotary jet grouting pile in the cofferdam;
after the foundation stabilization area reaches the set strength, a second cofferdam inner support is excavated and installed, and a third cofferdam inner support is installed after an installation groove is excavated in the foundation stabilization area;
And installing the pipe gallery 1 in the installation groove.
on the basis of the technical scheme, before the pipe gallery 1 is installed in the installation groove, a cushion layer and filled concrete are poured in the installation groove, and the third cofferdam inner support is removed after the concrete reaches the preset strength.
On the basis of the technical scheme, in the step S3, before the cofferdam steel sheet piles outside the transfer weir are removed:
Firstly, checking whether the sealing performance of the waterproof wall reaches the standard, if so, carrying out subsequent operation, and if not, performing leakage repair on the waterproof wall;
And backfilling the mounting groove to the original ground height, and irrigating water in the cofferdam outside the transfer weir.
on the basis of the technical scheme, the step of removing the cofferdam steel sheet piles except the transfer weir in the step of S3 specifically comprises the following steps: and (3) firstly removing the purlins and all the inner supports of the cofferdam, and then pulling out the steel sheet piles of the cofferdam except the transfer weir by the vibration hammer.
On the basis of the technical scheme, all the steel sheet piles of the cofferdam adopt secant piles.
on the basis of the technical scheme, before the step of S1, a trestle is erected beside the pipeline of the pipe gallery 1 to be installed.
On the basis of the technical scheme, after the step of S5, all the remaining steel sheet piles 5 and trestles 1 are removed, and the original appearance of the river is restored.
Compared with the prior art, the invention has the advantages that: the construction method for penetrating the river channel under the pipe gallery adopts a sectional construction mode to lay the pipe gallery to the opposite bank, river water cannot be cut off by the sectional construction method, filling, excavation and transportation of earthwork are omitted, and urban environment protection is facilitated. The cofferdam is constructed in two stages, open channels do not need to be excavated for drainage, rivers do not need to be changed, underground shield tunneling does not need to be excavated, the construction period is short, and economic benefits are high. In addition, the construction method is short in construction period, high in economic benefit, convenient and rapid to insert, beat and remove the conventional steel sheet pile cofferdam, the steel sheet pile can be repeatedly used, and the method is economical and efficient. The cofferdam is built by adopting the steel sheet piles, so that the cofferdam has stronger impermeability, and the waterproof effect of the whole cofferdam can be further improved by filling concrete after the foundation is reinforced.
Drawings
FIG. 1 is a construction schematic diagram of construction methods S1 and S2 for penetrating a pipe gallery into a river channel in the embodiment of the invention;
FIG. 2 is a construction schematic diagram of a construction method S3 for penetrating a river channel under a pipe gallery in an embodiment of the invention;
FIG. 3 is a construction schematic view of a construction method S4 for penetrating a river channel under a pipe gallery in an embodiment of the invention;
3 fig. 3 4 3 is 3 a 3 schematic 3 structural 3 diagram 3 of 3 a 3 section 3 a 3- 3 a 3 in 3 fig. 3 2 3 or 3 fig. 3 3 3 according 3 to 3 an 3 embodiment 3 of 3 the 3 present 3 invention 3. 3
in the figure: 1. a pipe gallery; 2. supporting in a cofferdam; 3. a bank line; 4. a trestle; 5. steel sheet piles; 6. a steel mix reinforcement zone; 7. and (5) a foundation stabilization area.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
fig. 1 is a construction schematic diagram of construction methods S1 and S2 for a pipe gallery to penetrate through a river channel in an embodiment of the invention. Referring to fig. 1, an embodiment of the present invention provides a construction method for a pipe gallery to pass through a river, including the following steps:
first, a trestle 4 is set up beside the line of the pipe gallery 1 to be installed. The trestle 4 can be used as a construction platform and a temporary river channel. Construction materials such as steel sheet piles, concrete, and the like may be transported to the construction area in the river through the trestle 4.
s1: and inserting and driving steel sheet piles from one bank of the river channel to the opposite bank to form the cofferdam until the end part of the cofferdam reaches a set position.
Specifically, steel sheet piles 5 are driven to form the cofferdam from the embankment line 3 on one side of the river channel until the end of the cofferdam reaches a set position. In this embodiment, the set position is the central position in the river channel, so that the water passing channel can be reserved at the position of the river channel where the steel sheet pile 5 is not inserted.
S2: and discharging water in the cofferdam, digging in the cofferdam to form a mounting groove, and mounting a pipe gallery in the mounting groove until the end part close to the cofferdam.
The step S2 specifically includes:
a first cofferdam inner support 2 and an enclosing purlin are arranged above the cofferdam;
erecting a construction platform on the purlin to reinforce the foundation of the rotary jet grouting pile in the cofferdam;
After the foundation stabilization area reaches the set strength, excavating and installing a second cofferdam inner support 2, and after excavating the foundation stabilization area to form an installation groove, installing a third cofferdam inner support 2;
and installing a pipe gallery in the installation groove.
In this embodiment, the steel sheet piles of all the cofferdams are snap piles. The connection between the steel sheet piles 5 can be facilitated.
In this embodiment, in order to ensure the cofferdam with a good strength, the installation of the inner cofferdam supports 2 is performed 3 times in the cofferdam. Firstly, after inserting and driving a steel sheet pile 5, installing a purlin on the top of the steel sheet pile 5 and then installing a first cofferdam inner support 2 on the upper part of the inner side of the cofferdam. And (3) erecting a construction platform on the purlin to reinforce the foundation of the jet grouting pile in the cofferdam, continuously excavating and installing the second cofferdam inner support 2 after the strength of a foundation reinforcing area 7 reaches 0.5MPa, and installing the third cofferdam inner support 2 after excavating to a bottom layer to form a mounting groove. The foundation strength can be improved and the deformation of the foundation pit can be reduced by adopting the mode of reinforcing the foundation with the jet grouting piles.
Preferably, before installing piping lane 1 in the mounting groove, pour the bed course and pack the concrete in the mounting groove, demolish third cofferdam interior support 2 after the concrete reaches preset intensity. Specifically, after the third cofferdam inner support 2 is installed, a cushion layer and concrete are poured, after the strength reaches 90%, the third cofferdam inner support 2 is removed, and construction of a side plate and a top plate of the pipe gallery 1 is carried out to form the pipe gallery 1.
fig. 2 is a construction schematic diagram of a construction method S3 for penetrating a river channel under a pipe gallery in an embodiment of the invention. Referring to fig. 2, S3: set up the bulkhead at the tip of piping lane 1, separate a transfer weir with the cofferdam to make the tip of piping lane 1 be located the transfer weir, demolish steel sheet pile 5 outside the transfer weir.
3 fig. 3 4 3 is 3 a 3 schematic 3 structural 3 diagram 3 of 3 a 3 section 3 a 3- 3 a 3 in 3 fig. 3 3 3 or 3 fig. 3 4 3 according 3 to 3 an 3 embodiment 3 of 3 the 3 present 3 invention 3. 3 As shown in fig. 4, concrete is first poured around the pipe gallery 1 to form a steel-concrete reinforced area 6, and a steel sheet pile 5 is arranged above the steel-concrete reinforced area 6 to form a transfer weir.
Preferably, before the cofferdam steel sheet pile outside the transfer weir is removed, whether the sealing performance of the waterproof wall reaches the standard is checked, if so, subsequent operation is carried out, and if not, leakage of the waterproof wall is repaired; and backfilling the mounting groove to the original ground height, and irrigating water in the cofferdam outside the transfer weir.
Preferably, the removing of the cofferdam steel sheet pile except for the transfer weir in the step S3 specifically includes: the enclosing purlin and all the inner cofferdam supports 2 are firstly dismantled, and then the steel cofferdam sheet piles except the transfer weir are pulled out through the vibration hammer. And the channel can be formed by removing the steel sheet piles 5 except the transfer weir.
Fig. 3 is a construction schematic diagram of a construction method S4 for penetrating a river channel under a pipe gallery in an embodiment of the invention. As shown in fig. 3, S4: and inserting and driving the steel sheet piles 5 from the transfer weir to the opposite bank to form the next cofferdam, removing the steel sheet piles 5 at the end of the previous cofferdam until the end of the next cofferdam is positioned at the next set position, and implementing the steps S2 and S3.
In this embodiment, the next set position is the inner side of the bank line 3 opposite to the river. Because other steel sheet piles 5 except the middle turning weir of the last cofferdam are dismantled to form a passage, all construction projects in the river channel can not cause the river channel to be blocked, and the river channel does not need to be drained.
S5: the step S4 is repeated until the pipe gallery 1 is installed to the opposite shore.
In other embodiments, the S4 step may be repeated for a plurality of times until the pipe gallery 1 is installed to the opposite bank.
and finally, removing all the remaining steel sheet piles 5, removing the trestle 1 serving as a construction platform, and restoring the original appearance of the river channel.
in conclusion, the pipe gallery is paved to the opposite bank by adopting a sectional construction mode, river water cannot be cut off by the sectional construction method, filling, excavation and transportation of earthwork are omitted, and urban environment protection is facilitated. The cofferdam is constructed in two stages, open channels do not need to be excavated for drainage, rivers do not need to be changed, underground shield tunneling does not need to be excavated, the construction period is short, and economic benefits are high. In addition, the construction period is short, the economic benefit is high, the inserting, beating and dismantling of the conventional steel sheet pile cofferdam are convenient and quick, the steel sheet pile can be repeatedly used, and the cofferdam is economical and efficient. The traditional earth bag cofferdam is large in size and easy to pollute water, and the steel sheet pile cofferdam cannot pollute the water. The anti-permeability and waterproof performance is good, the cofferdam is built by adopting the steel sheet piles, the cofferdam has stronger anti-permeability performance compared with the traditional soil bag cofferdam, and the waterproof effect of the whole cofferdam can be further improved by the filled concrete after the foundation is reinforced.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.

Claims (8)

1. a construction method for penetrating a river channel under a pipe gallery is characterized by comprising the following steps:
S1: inserting and driving steel sheet piles (5) from one bank of the river to the opposite bank to form a cofferdam until the end part of the cofferdam reaches a set position;
s2: discharging water in the cofferdam, digging in the cofferdam to form a mounting groove, and mounting a pipe gallery (1) in the mounting groove until the mounting groove is close to the end part of the cofferdam;
S3: arranging a waterproof wall at the end part of the pipe gallery (1), partitioning the cofferdam into a transfer weir, enabling the end part of the pipe gallery (1) to be positioned in the transfer weir, and removing the steel sheet piles (5) outside the transfer weir;
s4: inserting and driving steel sheet piles (5) from the transfer weir to the opposite bank to form a next cofferdam, dismantling the steel sheet piles (5) at the end of the previous cofferdam until the end of the next cofferdam is positioned at the next set position, and implementing the steps S2 and S3;
S5: and repeating the step S4 until the pipe gallery (1) is installed to the opposite bank.
2. The construction method for penetrating the river channel under the pipe gallery according to claim 1, wherein the step S2 specifically includes:
A first cofferdam inner support (2) and an enclosing purlin are arranged above the cofferdam;
erecting a construction platform on the purlin to reinforce the foundation of the rotary jet grouting pile in the cofferdam;
After the foundation stabilization area reaches the set strength, excavating and installing a second cofferdam inner support (2), and after excavating the foundation stabilization area to form an installation groove, installing a third cofferdam inner support (2);
And a pipe gallery (1) is arranged in the mounting groove.
3. The construction method for penetrating the river channel under the pipe gallery according to claim 2, characterized in that: before installing the pipe gallery (1) in the installation groove, pouring a cushion layer and filling concrete in the installation groove, and removing the third cofferdam inner support (2) after the concrete reaches the preset strength.
4. The construction method for penetrating the river channel under the pipe gallery according to claim 1, wherein in the step S3, before removing the cofferdam steel sheet pile (5) outside the transfer weir:
Firstly, checking whether the sealing performance of the waterproof wall reaches the standard, if so, carrying out subsequent operation, and if not, performing leakage repair on the waterproof wall;
and backfilling the mounting groove to the original ground height, and irrigating water in the cofferdam outside the transfer weir.
5. The construction method for penetrating the river channel under the pipe gallery according to claim 1, wherein the step of removing the cofferdam steel sheet pile (5) except the transfer weir in the step of S3 specifically comprises: firstly, the enclosing purlin and all the inner supports (2) of the cofferdam are dismantled, and then the steel sheet piles (5) of the cofferdam except the transfer weir are pulled out through the vibration hammer.
6. the construction method for penetrating the river channel under the pipe gallery according to any one of claims 1 to 5, wherein: all the steel sheet piles (5) of the cofferdam adopt secant piles.
7. The pipe gallery river course penetrating construction method according to claim 1, wherein before the step of S1, a trestle (4) is erected beside a pipe gallery (1) to be installed.
8. the construction method for penetrating the river channel under the pipe gallery according to claim 1, wherein after the step of S5, all the remaining steel sheet piles (5) and trestles (4) are removed to restore the original appearance of the river channel.
CN201910806507.9A 2019-08-28 2019-08-28 Construction method for penetrating river channel under pipe gallery Pending CN110565686A (en)

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Application Number Priority Date Filing Date Title
CN201910806507.9A CN110565686A (en) 2019-08-28 2019-08-28 Construction method for penetrating river channel under pipe gallery

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Publication Number Publication Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112459117A (en) * 2020-11-30 2021-03-09 中国一冶集团有限公司 Pipe gallery downward-penetrating river channel end plugging structure and method for SMW construction method pile support
CN112663642A (en) * 2020-12-18 2021-04-16 贵州天然气管网有限责任公司 Construction method for natural gas pipeline crossing by adopting secondary cofferdam diversion method
CN112962641A (en) * 2021-02-04 2021-06-15 中铁隧道集团三处有限公司 Construction method for dismantling riverbank cofferdam structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2758579A1 (en) * 1997-01-17 1998-07-24 Campenon Bernard Sge Method of making dry working space in effluent channel
CN202401462U (en) * 2011-11-11 2012-08-29 中交四航局第一工程有限公司 Deep-water single-wall steel sheet pile cofferdam structure with small soil penetration depth
CN104762993A (en) * 2015-02-11 2015-07-08 中国铁建大桥工程局集团有限公司 Splicing type construction method of urban lake-passing tunnel
CN104878774A (en) * 2015-04-03 2015-09-02 王燏斌 Movable cofferdam open-cutting method
CN106640091A (en) * 2016-08-31 2017-05-10 广州市恒盛建设工程有限公司 Shallow-buried tunnel section construction method
CN108951702A (en) * 2018-08-01 2018-12-07 四川兴昌建设工程有限公司 A kind of construction method of pipe gallery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2758579A1 (en) * 1997-01-17 1998-07-24 Campenon Bernard Sge Method of making dry working space in effluent channel
CN202401462U (en) * 2011-11-11 2012-08-29 中交四航局第一工程有限公司 Deep-water single-wall steel sheet pile cofferdam structure with small soil penetration depth
CN104762993A (en) * 2015-02-11 2015-07-08 中国铁建大桥工程局集团有限公司 Splicing type construction method of urban lake-passing tunnel
CN104878774A (en) * 2015-04-03 2015-09-02 王燏斌 Movable cofferdam open-cutting method
CN106640091A (en) * 2016-08-31 2017-05-10 广州市恒盛建设工程有限公司 Shallow-buried tunnel section construction method
CN108951702A (en) * 2018-08-01 2018-12-07 四川兴昌建设工程有限公司 A kind of construction method of pipe gallery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112459117A (en) * 2020-11-30 2021-03-09 中国一冶集团有限公司 Pipe gallery downward-penetrating river channel end plugging structure and method for SMW construction method pile support
CN112459117B (en) * 2020-11-30 2022-07-15 中国一冶集团有限公司 Pipe gallery downward-penetrating river channel end plugging structure and method for SMW construction method pile support
CN112663642A (en) * 2020-12-18 2021-04-16 贵州天然气管网有限责任公司 Construction method for natural gas pipeline crossing by adopting secondary cofferdam diversion method
CN112962641A (en) * 2021-02-04 2021-06-15 中铁隧道集团三处有限公司 Construction method for dismantling riverbank cofferdam structure

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