建築工程開挖面臨既有設施之風險評估與探討

• Main Author: 陳寶鑫
• Language: Chinese; English
• Published: 2013
• Subjects: 既有設施; 建築工程開挖; 失效模式與效應分析; existing infrastructure; construction excavation; Failure Mode and Effect Analysis; Greenland
• Online Access: http://ir.lib.ntust.edu.tw/handle/987654321/36872; http://ir.lib.ntust.edu.tw/bitstream/987654321/36872/-1/index.html

國立臺灣科技大學營建工程系 學位：碩士 指導教授：呂守陞 都會區中隨著建築素地不斷減少，許多建商不得往都更及舊物拆除新建等方向邁進，撇開像台北市士林區文林院產權糾紛外，在取得建照開始施工時亦有相當複雜的問題待解決，例如鄰房過近、舊有結構體及既有設施等都可能影響工程之進行。所以在設計或施工之前如果未仔細調查基地及評估可能產生的困境，在施工過程將會產生諸多的不順。譬如鄰房侵界地下室放不下勢必要變更設計，如鄰房老舊又必須做好鄰房保護，開挖過程亦因舊結構、基礎及其他既有設施而增加施工困難，許多基礎承商已會利用原有結構借力使力、及新工法解決了大部分的問題，但還是有一些不明因素造成施工困境。 本研究針對大台北地區有關舊基礎開挖之個案進行研究，將地下室開挖過程施工遇到舊有設施所產生之衝突點以FMEA來作分析，並找出改善方式，並以改善後之施做來驗證改善方法是否得到成效，藉由本研究將基礎開挖施工與既有設施之衝突全部找出並建議改善措施，作為後續類似案件施工前規劃之參考。 Due to the constantly reduction of construction greenland in urban area, lots of construction contractors have to develop towards the demolition and renewal of extant buildings. Apart from the property right disputes occurred in Wenlin Yuan, Shilin District of Taipei, there are still many complicated problems to be solved at the beginning of construction after obtaining the construction license, such as the overclose distance with its neighboring building, extant structures and existing infrastructures, which may all affect the progress of project. As a result, if the contractors fail to investigate the base thoroughly and evaluate the potential obstacles, they would encounter many problems during the process of construction. For example, it is necessary to adjust the design if the basements are too small to place stuffs due to the occupation of neighbor building, and to protect the neighbor building if it is too old. Besides, during the process of excavation, the old structure, base and other existing infrastructures also increase the difficulty in construction; although many contractors have solved part of these problems by taking advantage of the existing structure to produce forces and developing new construction method, there are still many other unknown causes resulting in construction difficulties. This study conducts researches on case project of base excavation in Taipei metropolitan area, adopts Failure Mode and Effect Analysis (FMEA) to analyze the conflicts generated in the existing infrastructure during the excavation process, so as to work out the improvement methods and testify whether the method produce desirable effects. It expects the study can work out all conflicts between base excavation and existing infrastructures and propose suggestions for improvement, to serve as references for pre-construction planning of similar cases in the future.