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水土保持局農村再生工程結構物尺寸容許標準分析探討

Discussion on the allowable standard of structure size

摘要


農村再生工程品質抽驗由臺北、臺中、花蓮、南投、臺南、臺東分局轄區於102年度至104年度工程抽驗總計683件,合格637件,不合格46件,合格率為93.3%;農村再生工程抽驗內容分為兩大部分「一般工程品質」及「材料試檢驗」,「一般工程品質」細分為結構物尺寸、坐標及現場缺失,以量測構造物尺寸是否超出農村再生補充規定內之容許標準,坐標以現場定位並檢核是否與核定坐標誤差於50公尺內,現場缺失則以教授、技師依照現場施工所產生缺失紀錄之分析;另,「材料試檢驗」細分為混凝土鑽心取樣、瀝青混凝土壓實度、高壓磚試驗及工地密度,其中為瞭解農村再生抽驗補充規定結構物尺寸容許標準是否與現行施工符合,於此分析中做探討。經分析結果得知,歷年各轄區尺寸分析合格機率最低為「溝渠寬度」51.50%,其次為「構造物斜率」59.24%及「鋪面及路面寬度」66.50%,建議溝渠寬度以農村再生設施工程裡較常施做乾砌石或漿砌石溝,以砌石工法所施作之溝渠,較常有尺寸上之誤差,因石頭尺寸大小及堆疊方式易造成溝渠尺寸超出或小於設計值,因此建議溝渠之寬度尺寸,是否應考量砌石溝之情況,另訂定容許標準。構造物斜率以農村再生設施工程容許標準為10%,於抽驗之工程未全然施作於鄉村或市區,部分為農村再生工程,實際施作為護岸及固床工等野溪治理工程,於山中野溪施工不易,10%之斜率容許誤差較為苛刻,因此建議應以因施工區未及位置,些許調整斜率之容許誤差。

並列摘要


The quality of rural regeneration project by the Taipei, Taichung, Hualien, Nantou, Tainan, Taitung branch in 102 to 104 annual project sampling total of 683, qualified 637, failed 46, with a pass rate of 93.3 %; The content of the rural recycling project is divided into two parts: "general engineering quality" and "material testing". The "general engineering quality" is subdivided into the structure size, coordinates and site deletion to measure whether the structure size exceeds the rural regeneration Supplemented by the allowable standards within the provisions of the coordinates of the site to locate and check whether the approved coordinate error within 50 meters, the site is missing Professor and technicians in accordance with the site construction of the missing records of the analysis; the other "material test test" For the concrete core sampling, asphalt concrete compaction, high-pressure brick test and site density, which in order to understand if the allowable standard of the structure size stipulated in the supplementary sampling of rural regeneration is in accordance with the current construction, it will be discussed in this analysis, about 30~45 m. It caused the road distorts at a length of about 1,500 m and toppled down 7 houses. This study aimed to investigate the causes of landslide and seek the possible countermeasures. It is tried to improve the safety of landslide surrounding areas and the protected targets located at the downstream areas. The investigation the causes of landslide included field investigation, topographic map production, geological drilling, geophysical exploration, and statistical analysis of the field monitoring data. These results were used develop the possible countermeasures. The goal of the present study is to restrain the re-occurrence of the landslide or the enhancement of disaster scale. It is expected to achieve a goal of effective regulation engineering. The analysis result shows that the minimum probability of qualified analysis is 51.50%, followed by 59.24% and 66.50%, respectively. It is suggested that the width of ditch should be within the scope of rural regeneration facilities More often do dry masonry or masonry ditch to masonry construction method of the ditch, more often the size of the error, because the stone size and stacking methods can easily lead to trench size exceeds or less than the design value, it is recommended Whether the width of the ditch should be taken into consideration, and the permissible standard. The slope of the structure was 10% of the permitted standard for rural regeneration facilities. The sampling test was not entirely applied to rural or urban areas, and some of them were rural regeneration projects. They were actually used as bank protection projects such as bank revetment and solid beds. Nakano River construction is not easy, 10% of the slope tolerance is more harsh, it is proposed to be due to the location of the construction area, adjust the slope of the allowable error.

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