دانلود رایگان ترجمه مقاله گسترده شمعی بر روی رس دریایی نرم – IEEE 2011

دانلود رایگان مقاله انگلیسی گسترده شمعی روی رس نرم دریایی: مقایسه اندازه گیری های در محل و آنالیزهای عددی به همراه ترجمه فارسی

 

عنوان فارسی مقاله: گسترده شمعی روی رس نرم دریایی: مقایسه اندازه گیری های در محل و آنالیزهای عددی
عنوان انگلیسی مقاله: Piled Raft over Soft Marine Clay: Comparison of In-situ Measurement and Numerical Analyses
رشته های مرتبط: مهندسی عمران، سازه، سازه های دریایی و مهندسی هیدرولیک
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نشریه الزویر – Elsevier
کد محصول F509

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Abstract

Geotechnical works in deep deposit of highly compressible soft clay is always associated with excessive differential settlement. The site evaluation and settlement analysis had been performed on five cylindrical steel tanks situated at Pasir Gudang, Johor in which all of the tanks are currently in service for fuel oil storage. This paper will describes the methodology of geotechnical study and engineering analysis for constructing large scale steel tanks founded on piled raft over compressible soil layers. Discussion on the design method, engineering consideration and hydrostatic test of the cylindrical steel tanks were presented in subsequent sections. Hydrostatic test was conducted to verify the foundation adequacy of the steel tanks constructed on piled raft foundation and to minimize the post construction settlement of the tank to an acceptable limit. Hydrostatic test was carried out by gradually fill up the tank with water until full load, retain for few days and gradually empty the tank. The hydrostatic test data was used to assess the magnitude of displacement (settlement and heave) of the tanks. Forward analyses which predict the magnitude and pattern of settlement were also presented. The estimated and measured settlement had been compared, in which analysis by using all three methods gave good settlement prediction to the actual value. The controlling factors which contribute to various displacement profiles of the tanks, namely subsoil profile, pile termination condition and sea water tide were also discussed.

Keywords – piled raft; soil; heave; settlement; cylindrical tank I.

INTRODUCTION

The construction of large scale steel tanks over soft ground will be made feasible with advanced geotechnical knowledge and good engineering judgment. This paper describes the performance of five tanks, by assessing the predicted settlement by using SAFE software and 2V:1H stress distribution method in comparison with the measured settlement at site. The details of 5 steel tanks, i.e. pile number, type of pile used, tanks dimension and total weight with water are as tabulated in Table 1. Meanwhile, the tanks layout is as shown in Figure 1.

II. OBJECTIVES OF STUDY

The objectives of this paper are to achieve the followings: 1) To conclude which method that predicts the magnitude of displacement closer to the actual value. 2) To study the factors which influence the tanks displacement (settlement and heave) pattern.

III. METHODOLOGY

۱) Interpretation of subsurface investigation results 2) Data collection of settlement / heave monitoring results 3) Interpretation of the monitoring results 4) Carry out analyses to predict magnitude of settlement and compare with measured settlement at site 5) Carry out parametric study to check which parameters is sensitive to the results 6) Study the influence of subsoil profile on settlement pattern 7) Study the influence of pile termination condition on settlement pattern 8) Study the effect of pile length on settlement pattern 9) Study the influence of sea water tide on heave / settlement pattern