Construction method for mounting prestressed concrete cylinder pipe on coastal soft foundation
A soft soil foundation, prestressed steel technology, applied in pipeline laying and maintenance, pipes/pipe joints/fittings, machinery and equipment, etc., can solve problems such as seawater corrosion, uneven foundation settlement, etc. The effect of technology development promotion and simple interface
Inactive Publication Date: 2017-09-08
中能建建筑集团有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the above problems existing in the prior art, and to provide a method for installation and construction of prestressed steel cylinder concrete pipelines on coastal soft soil foundations, which can effectively solve the problems of uneven foundation settlement and seawater corrosion
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[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0035] Such as figure 1 A kind of coastal soft soil foundation prestressed steel cylinder concrete pipeline installation construction method shown, described method comprises the following steps:
[0036] S1: Locate and excavate the supplementary water system pipeline;
[0037] S2: PCCP pipeline installation is carried out by segmental excavation and flowing water construction:
[0038] Step 201: using cement fly ash gravel piles for foundation treatment;
[003...
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The invention discloses a method for installing and constructing a prestressed steel cylinder concrete pipeline on a coastal soft soil foundation. The method includes the following steps: positioning and excavating the pipeline of a supplementary water system; and performing PCCP by adopting the mode of segmental excavation and flowing water construction Pipeline installation: use cement fly ash gravel piles for foundation treatment; lay a 500mm thick graded sand and stone cushion layer in layers; add geogrid in the middle of the cushion layer and compact it in layers; double rubber rings are used for the standard section of the pipeline Plugging; cathodic protection of pipelines with rod-shaped zinc anodes. The invention can effectively solve the problems of uneven foundation settlement and seawater corrosion, is economical, environmentally friendly, simple and easy to implement, safe and reliable, worthy of popularization and application, and has a good role in promoting the development of construction dewatering technology.
Description
technical field [0001] The invention belongs to the field of pipeline construction, and in particular relates to a method for installing and constructing a prestressed steel tube concrete pipeline on a coastal soft soil foundation. Background technique [0002] Prestressed steel cylinder concrete pipe (referred to as PCCP) is composed of four basic raw materials: steel plate, prestressed steel wire, concrete and cement mortar. A new type of composite pipe, which gives full play to the tensile strength and easy sealing of steel and the compression and corrosion resistance of concrete, and has the characteristics of high sealing, high strength and high impermeability. In seawater transmission pipeline projects on coastal soft soil foundations, traditional pipeline installation methods cannot effectively solve the problems of uneven foundation settlement and seawater corrosion. Contents of the invention [0003] The purpose of the present invention is to overcome the above p...
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Login to View More IPC IPC(8): F16L1/036
CPCF16L1/036
Inventor 朱家直张明磊王从颜田伟李仁抢彭飞
Owner 中能建建筑集团有限公司