Laboratory and Field Experimental Study on the Vacuum Preloading Method with Pumping and Discharging
المؤلفون المشاركون
Chen, Lei
Zhang, Fuhai
Chen, Yu
Liu, Zhengrong
Bai, Yanhui
Chen, Liang
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-12-14
دولة النشر
مصر
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
Negative vacuum pressure hardly reaches deep soils due to the drain board bending and serious blockage with the existing vacuum preloading methods (VPMs), thus resulting in poor reinforcement relative to practical engineering applications.
To address this issue, this paper proposes a vacuum preloading method with pumping and discharging (a new dredger filling foundation processing technique based on vacuum preloading).
This new VPM is developed through technological improvement and plastic drain board innovations in traditional VPMs.
The new VPM uses a plastic vertical drainage board with double drainage channels, and the core board is in a “tic-tac-toe” shape with a hollow centre and square pipeline channels.
It can execute air and water drainage.
Vacuum transfer holes were set at two grooves, every 2-3 m from the central pipeline of the core board.
Grooves at two sides of the core board and filter membrane were rolled together to improve drainage.
In addition, the vacuum pipe, tube connector, and core board centre of the vertical plastic drainage board were connected directly and securely.
A stereoscopic vacuum transmission system composed of a horizontal and vertical drainage system was built.
In this vacuum transmission system, the transfer route was shortened, and the loss of vacuum along the route was decreased.
The negative vacuum pressure was transferred to different soil depths through the central pipeline of the core board to accelerate the dissipation of pore pressure in soil mass and prevent vacuum pressure loss caused by drainage board bending, thus improving the reinforcement effect.
Dredger filling silt foundation reinforcement by VPM and VPM with pumping and drainage were compared in laboratory simulations and field tests with different drainage boards.
Test results show that the loss of vacuum pressure along the drainage path was relatively smaller in the new physical vapor deposition (PVD), and the pressure transfer efficiency was increased.
Deep soil mass was reinforced effectively by using the new PVD.
After reinforcement, the physical and mechanical properties of soil layers were improved.
Moreover, soil strengths were remarkably improved, with sharp reductions in natural moisture content and porosity.
Then, the transfer law of vacuum on different drainage boards and the reinforcement mechanism of VPM with pumping and drainage were analysed.
Research conclusions show the superiority of VPM with pumping and drainage in terms of effectiveness and soft foundation reinforcement.
This study provides a theoretical basis for the application and development of the new VPM.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Zhang, Fuhai& Chen, Yu& Liu, Zhengrong& Chen, Lei& Bai, Yanhui& Chen, Liang. 2020. Laboratory and Field Experimental Study on the Vacuum Preloading Method with Pumping and Discharging. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1122295
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Zhang, Fuhai…[et al.]. Laboratory and Field Experimental Study on the Vacuum Preloading Method with Pumping and Discharging. Advances in Civil Engineering No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1122295
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Zhang, Fuhai& Chen, Yu& Liu, Zhengrong& Chen, Lei& Bai, Yanhui& Chen, Liang. Laboratory and Field Experimental Study on the Vacuum Preloading Method with Pumping and Discharging. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1122295
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1122295
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر