The K0 + 080 - K0 + 275 bid section of the underground comprehensive pipe corridor on Wanxin Road in Binhai New City located in Fuzhou was considered in this work. The mechanical properties and optimal design of the soil-mixing wall (SMW) construction method piles (steel–cement mixing piles) in the comprehensive pipe corridor in the water-rich, weak stratum were studied. In the K0 + 080 - K0 + 275 bid section of the comprehensive pipe gallery, different construction parameters of the steel–cement–soil mixing piles were tested through pile tests. The construction parameters of the SMW construction piles were as follows: water–cement ratio of 1.3 and cement content of 20%. The finite-element software MIDAS-GTS NX was used to establish a mechanical model of the SMW construction method piles. The variations in mechanical characteristics, such as the horizontal displacement of SMW construction method piles under different supporting pile diameters, steel layouts, steel sizes, and supporting axial forces were analyzed. The optimal design of the SMW construction method piles was also determined. Results revealed that when the pile diameter of the SMW construction method increased from 0.55 m to 0.85 m, the horizontal displacement of the pile body decreased by 28.9%. The horizontal displacement of the pile body could be effectively controlled by increasing the pile diameter. Increasing the size of the flange and web of the section steel had little effect on the deformation of the foundation pit. The flange was sensitive to the deformation of the supporting structure because it was on the stressed side. The different layout forms of the steel section exerted a great influence on the deformation of the foundation pit. The maximum horizontal displacement of the pile body for the type of steel-close insertion was 18.4% less than that for the plug-one-jump-one insertion type. Increasing the supporting preadded axial force effectively reduced the deformation of the envelope structure, and adopting the value of 50%–80% of the designed axial force was reasonable. The K0 + 080 - K0 + 275 bid section of the Wanxin Road underground comprehensive corridor was determined to be supported by φ50@ 450 cement–soil five-axis mixing pile interpolated with HM500 × 300 × 11 × 18 section steel, and the layout of the section steel adopts the plug-one-hop-one type. The onsite monitoring data of the optimal construction plan were in accordance with the change law of the numerical simulation and were successfully used in the underground comprehensive pipe corridor project. Ideal results were achieved.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Mechanical Characteristics and Optimum Design of SMW Construction Method for a Comprehensive Pipe Gallery in a Water-Rich Weak Stratum


    Beteiligte:
    Miao, Xiang-da (Autor:in) / Zhang, Min (Autor:in) / Wang, Yan-ming (Autor:in) / Liang, Bin (Autor:in)


    Erscheinungsdatum :

    2020-12-01


    Format / Umfang :

    112020-01-01 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt



    Prefabricated comprehensive pipe gallery hoisting construction equipment

    XIE LEIJIE / WANG HUIKUN / ZHANG FENG et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    Prefabricated comprehensive pipe gallery

    QUAN GANG / ZHAO JU / FENG YIZHUO | Europäisches Patentamt | 2021

    Freier Zugriff

    Steel structure comprehensive pipe gallery

    HU LILI / GUO XIAORAN / HU CHANGQUAN et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    Cable laying method in comprehensive pipe gallery

    WANG CHUNYAN / XU HAIYAN / XU LI et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    Pipe gallery construction platform

    LI YAOFENG / WANG MAOYUAN / SHU WENFENG et al. | Europäisches Patentamt | 2021

    Freier Zugriff