| Title |
A study on the Spatial Sampling Method to Minimize Spatial Autocorrelation of Spatial and Geographical Data |
| Authors |
이연수(Lee, Youn Soo) ; 이만출(Lee, Man Choul) ; 나경범(Lah, Kyung Beom) ; 강준모(Kang, Jun Mo) |
| DOI |
https://doi.org/10.12652/Ksce.2014.34.4.1317 |
| Keywords |
공간샘플링;공간자기상관성;도시공간구조;대중교통수단분담률 Spatial sampling;Spatial autocorrelation;Urban spatial structure;Public transportation use modal share |
| Abstract |
It has been known that the conventional retaining wall system with timber lagging and H pile has several problems such as the irregular gap between H-piles, cutting or adding to standard timber, back fill over first step excavation, and especially break-down accident at the disjoint of wall system. In the practical excavation, these problems may lead to worker's accident and the inefficiency of construction economy. To solve the above problems, a new method using prefabricated retaining wall was proposed and verified. The characteristics of the new method is to replace timber wall as free-sliding steel-lagging and connector. To check its verification and application, laboratory tests such as bending strength, tensile strength, and fatigue strength were carried out. Also, a pilot test in the field and numerical simulations under various ground conditions were performed. From the researches, it is found that the prefabricated retaining wall plate can be superior to the conventional timber lagging plate in the strength. It is also found that the proposed methods can be effective in the reuse of retaining wall plate and safe in the disjoint of wall system. Finally, it is desired that the proposed method will be effective in the reduction of the imported timbers and helpful in the safety of retaining wall construction. |