建筑物负荷引起的地面和大地水准面形变研究

根据地球固体潮的有关理论，从物理大地测量的角度推导了建筑物负荷引起的地面和大地水准面的形变量的计算公式，并通过模拟计算，对单幢高层建筑、城市建筑群以及环形高架桥引起的附近地面和大地水准面的形变情况进行了定量分析。计算结果表明：建筑物负荷引起的地面垂直形变量要比水平形变量和大地水准面形变量大，城市建筑群引起的附近地面和大地水准面的形变量可达几毫米，对实际测量结果有一定的影响。

Geoid Deformation and Elevation Influence Caused by Building Loading

The paper studies the ground vertical deformation and the geoid undulation caused by loading of neighboring buildings, based on the loading tides theory. The influence on elevation is also considered. The results show that the ground vertical deformation and the geoid undulation both reach millimeter magnitude. Therefore, it is obvious that the building loading significantly affects the precise engineering surveying, and it must be seriously considered in application.