CN105696626A - Prefabrication method for large longest traffic public pipeline crossing river-sea bottom - Google Patents

Prefabrication method for large longest traffic public pipeline crossing river-sea bottom Download PDF

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Publication number
CN105696626A
CN105696626A CN201610092231.9A CN201610092231A CN105696626A CN 105696626 A CN105696626 A CN 105696626A CN 201610092231 A CN201610092231 A CN 201610092231A CN 105696626 A CN105696626 A CN 105696626A
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CN
China
Prior art keywords
prefabricated
pipeline
tensioning
sections
steel strand
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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
CN201610092231.9A
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Chinese (zh)
Inventor
袁根木
Original Assignee
袁根木
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Application filed by 袁根木 filed Critical 袁根木
Priority to CN201610092231.9A priority Critical patent/CN105696626A/en
Publication of CN105696626A publication Critical patent/CN105696626A/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
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/063Tunnels submerged into, or built in, open water
    • E02D29/07Tunnels or shuttering therefor preconstructed as a whole or continuously made, and moved into place on the water-bed, e.g. into a preformed trench

Abstract

Provided is a prefabrication method for a large longest traffic public pipeline crossing the river-sea bottom. A concrete pipe is prefabricated. The large longest traffic public pipeline crossing a river or sea is prefabricated through steel stranded cable concrete. According to one form of the pipeline, the pipeline can be a prefabricated pipeline crossing an island of the Yangtze River. According to the other form of the pipeline, two-end sections of the pipeline are prefabricated at first through the post-tensioning method, and then middle sections are prefabricated in a segmented mode through the pre-tensioning method; most of the sections are prefabricated through the post-tensioning method, the middle sections adopting the pre-tensioning method are pulled by the two-end sections adopting the post-tensioning method, the prefabricated two-end sections adopting the post-tensioning method are used for pulling the middle sections adopting the pre-tensioning method, the two-end sections adopting the post-tensioning method are tensioned after the pipeline sections float, and the sections adopting the post-tensioning method are tensioned in the pipe sections. The sections adopting the post-tensioning method are tensioned internally, and old steel stranded cables can be pulled out to be replaced with new steel stranded cables one by one after a long time. The method can achieve permanence.

Description

The longest large-scale traffic common conduit method for prefabricating across seabed, river
The longest large-scale traffic common conduit method for prefabricating across seabed, river。The present invention relates to the method for prefabricating of public main pipe system。Implement the prefabrication of tube section across seabed, river to lay across the big passage in seabed, river。These sections highly have about ten meters, the pipeline that width is three or five ten meters。This prefabrication of tube section is usually prefabricated in dry hole。In order to reduce crack, the very short of prefabrication of tube section only has tens meters, the longest only more than 100 meter one。This out-of-date methods can not prefabricated long tube section, connect ratio under this short sections deep water and step on sky difficulty, why not prefabricated long tube section, so simply method, prefabricated long tube section expense is economized again。Laying short sections, joint many difficulty more risk is bigger。Particularly the depth of water is muddy plus water, and ditching has drift sand deeply, reprocesses maximum, and the life-span is short, at most only 100 years。For descendants, the present invention can thousand stainless, 10000 years are not rotten。Using steel strand cable, if by post stretching, having rust to pull out, one is changed one。Entering with the old new string that pulls out, can move to steel strand cable does not have crack, moves to water-tight。
With the prefabricated large-scale pipeline section of steel strand cable, it is prefabricated that the longer the better, the longer the better pipe laying。Can without joint, people just need not descend water operation, does not just have risk。Method for prefabricating: first the pipeline at two, first prefabricated post stretching set aside pre-embedded pipe, middle built-in pipe can use pre-tensioning system, being pulled in the post stretching provided pipe hole that two is prefabricated, strain steel strand cable, post stretching will after pipeline section discharges water, steel strand cable is strained during pipeline section floating, steel strand cable has ton up to ten thousand just to have pressure, the pulling force of up to ten thousand tons, and namely each position has several ten thousand tons, and this way only can contract will not be swollen。If having swollen phenomenon, it is possible to save with air-conditioning。

Claims (2)

1. the longest large-scale traffic common conduit method for prefabricating across seabed, river, is characterized in that including steel strand cable precast bridge plate post stretching and pre-tensioning system precast bridge plate:
A pipe of concrete is prefabricated across the concrete prefabricated pipeline section long especially of river seabed pipe prefabricated steel strand cable
B steel strand cable replaces the prefabricated pipeline section long especially of reinforcing bar, it is possible to pipeline section more than prefabricated hundreds of rice, more long cost saving, how long with regard to how long, and length is not limit, the longer the better paving。
C pipeline section is prefabricated in the ditch hole dug in the land of Jiang Hai
2. the longest large-scale traffic common conduit method for prefabricating across seabed, river as claimed in claim 1, is characterized in that;The prefabricated speciality pipeline section of pipe of concrete prefabricated steel strand cable, part use steel strand cable, part reinforcing bar, and steel strand cable replacement reinforcing bar can reduce and expands with heat and contract with cold, it is possible to free from flaw, would not leak。
CN201610092231.9A 2016-02-03 2016-02-03 Prefabrication method for large longest traffic public pipeline crossing river-sea bottom Pending CN105696626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610092231.9A CN105696626A (en) 2016-02-03 2016-02-03 Prefabrication method for large longest traffic public pipeline crossing river-sea bottom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610092231.9A CN105696626A (en) 2016-02-03 2016-02-03 Prefabrication method for large longest traffic public pipeline crossing river-sea bottom

Publications (1)

Publication Number Publication Date
CN105696626A true CN105696626A (en) 2016-06-22

Family

ID=56223359

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610092231.9A Pending CN105696626A (en) 2016-02-03 2016-02-03 Prefabrication method for large longest traffic public pipeline crossing river-sea bottom

Country Status (1)

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CN (1) CN105696626A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4672700B2 (en) * 2007-06-05 2011-04-20 誠 植村 Tightening method for underground structures
CN202767063U (en) * 2012-08-09 2013-03-06 上海中技桩业股份有限公司 Partial prestressed concrete hollow square pile
CN203639944U (en) * 2013-11-13 2014-06-11 中交第二航务工程局有限公司 Vault immersed tube tunnel
CN105002931A (en) * 2015-07-24 2015-10-28 厦门市市政工程设计院有限公司 Bidirectional prefabricated segment splicing construction method for large-sized underpass
CN105220808A (en) * 2015-09-11 2016-01-06 杭州江润科技有限公司 Large-span prestressed arch bar site prefabrication construction method of installation
CN105256791A (en) * 2015-11-18 2016-01-20 黄贺明 Concrete tubular pile for oceans

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4672700B2 (en) * 2007-06-05 2011-04-20 誠 植村 Tightening method for underground structures
CN202767063U (en) * 2012-08-09 2013-03-06 上海中技桩业股份有限公司 Partial prestressed concrete hollow square pile
CN203639944U (en) * 2013-11-13 2014-06-11 中交第二航务工程局有限公司 Vault immersed tube tunnel
CN105002931A (en) * 2015-07-24 2015-10-28 厦门市市政工程设计院有限公司 Bidirectional prefabricated segment splicing construction method for large-sized underpass
CN105220808A (en) * 2015-09-11 2016-01-06 杭州江润科技有限公司 Large-span prestressed arch bar site prefabrication construction method of installation
CN105256791A (en) * 2015-11-18 2016-01-20 黄贺明 Concrete tubular pile for oceans

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
严捍东: "《土木工程材料(第2版)》", 31 August 2014, 同济大学出版社 *
叶先光等: "海工用长管节后张法大直径预应力混凝土管桩的开发", 《水运工程》 *

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