We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Analysis on Geological Conditions of Inclined Bedrock of South Anchorage of the Wufengshan Yangtze River Bridge.
- Authors
LI Shouming; ZHANG Xinquan; WANG Meng; ZENG Hongxian
- Abstract
The South Anchorage of the Wufengshan Bridge is located between Wufengshan mountains. It adopts a circular expanded foundation with an outer diameter of 90m. The topography of the site relieves greatly, and the distribution of rock and soil layers is complex. It is of great significance for engineering safety and economy to reasonably recommend the anchorage foundation scheme suitable for geological conditions. In order to make full use of the slightly weathered tuffaceous sandstone foundation with good engineering performance in the south anchorage site, find out the distribution and properties of the rock and soil layer, provide accurate and reliable rock and soil indicators, and accurately evaluate the stability of the rock and soil mass and its suitability for the project, the comprehensive survey means of outcrop survey, drilling, geophysical prospecting, in-situ test and indoor test were adopted. Based on the geological genesis analysis and stereographic projection method, it was concluded that the overall occurrence of rock surface and weathered surface is consistent, with an inclination of about 18°, and the distribution along the inclined direction is relatively stable. By further analyzing the interaction between the inclined rock mass and its weathering surface distribution and the anchorage foundation pit, the feasibility of adopting the stepped foundation scheme was evaluated, and its advantages in the utilization of rock foundation were analyzed. The construction suggestions of the anchorage foundation pit were put forward. Practice had proved that the anchorage foundation considering the engineering geological conditions of inclined bedrock could directly reduce the excavation volume of slightly weathered rock volume of about 40 000 m³, making the project both safe and economical.
- Subjects
BEDROCK; ANCHORAGE; GEOPHYSICAL prospecting; SPHERICAL projection; INDUSTRIAL safety; ROCK properties
- Publication
Railway Investigation & Surveying, 2024, Vol 50, Issue 1, p47
- ISSN
1672-7479
- Publication type
Article
- DOI
10.19630/j.cnki.tdkc.202305060003