垂直承載樁試驗之資料分析
Date Issued
2004
Date
2004
Author(s)
藍士堯
DOI
zh-TW
Abstract
Owing to the rapid progress in the construction equipment of piles in recent years, the large diameter bored piles have become the prevailing type of foundations adopted in Taiwan. This study collected 30 sets of pile load test data for analysis. All the test piles are bored piles with diameter ranged from 1m to 2m, and length ranged from 30m to 70m.
The data recorded from a pile load test comprises large amount of data points. The post-process work is time consuming and needs significant efforts. In order to effectively store and deduce the test results, this study develops a Pile Test Analysis (PTA) program by using the programming language of Visual Basic. In addition, a data base by using Microsoft Access is established to store the data for all test piles. The data base has a visual interface for input and output, and is very convenient for engineering applications.
The pile load test data are input in the data base through window-typed interface. Based on the data stored, the PTA program developed has the following capabilities:
1.It is capable of analyzing the ultimate bearing capacity of the test pile by using various criteria commonly used in engineering industry.
2.It can analyze the t-z and q-z curves from the recordings of strain gauges embedded in the pile shaft.
3.The t-z and q-z curves established can be used to predict the load-deflection curve of piles constructed in the same site.
Besides, by using the data of 30 pile load tests collected, a normalized load-deflection curve and corresponding parameters have been deduced for engineering applications.
Subjects
基樁載重試驗
極限承載力
大口徑場鑄樁
極限抗拔力
t-z曲線
q-z曲線
正規化試樁曲線
垂直承載勁度
large diameter bored pile
pile loading test
ultimate bearing capacity
ultimate uplift capacity
q-z curve
t-z curve
normalized load-deflection curve
vertical bearing stiffness
Type
thesis
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