mba論文盤錦市工程場(chǎng)地砂土液化分析及抗液化處理研究pdf

1、沈陽(yáng)建筑大學(xué)碩士學(xué)位論文盤錦市工程場(chǎng)地砂土液化分析及抗液化處理研究姓名：張鴻申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：建筑與土木工程指導(dǎo)教師：王寧偉；鄧力2010-01碩士研究生學(xué)位論文 Abstract III Abstract Earthquake is a sudden natural disaster hazardous to personal property, safety and lives with its

2、great destructiveness. Under intense seismic action, saturated sandy soil under the groundwater will be prone to sand liquefaction disaster. At the end of the 20th century, UN ISDR appealed to earthquak

3、e disaster mitigation evaluation in large and medium cities, and as the “ Law on Protecting Against and Mitigating Earthquake Disasters of the People’ s Republic of China”definitely stipulated in

4、 2008, detailed plan about earthquake disaster preventions shall be involved in earthquake disaster mitigation and earthquake safety evaluation shall be performed for key construction projects and

5、 the ones with possible serious secondary disasters, therefore, sand liquefaction is a critical link in earthquake safety evaluation, urban earthquake fortification and earthquake damage prediction.

6、 As a key city located near Bohai Sea in the coastal economic zone of “ Five City along One Line”in the mid- south of Liaoning Province, Panjin has experienced site liquefaction somewhat in T

7、angshan Earthquake and Haicheng Earthquake in most of its area, therefore it is of importance and value to discriminate liquefaction in some sites with possible liquefaction and to regionalize

8、the site liquefaction in urban area for consequent anti- liquefaction in some sites with possible liquefaction. Based on the above background, study on the ground soil liquefaction discrimination

9、, composite foundation load capacity and liquefaction discrimination for the gravel piles with composite foundation is conducted in the essay proper with systemic review and discussion on the ant

10、i- liquefaction discrimination of the natural ground soil, and on the anti- liquefaction discrimination of gravel piles with composite foundation. Meanwhile, based on the accumulated the site drill

11、ing data in Panjin, ground soil classification, liquefaction discrimination and liquefaction classification are made with regionalized site liquefaction evaluation in Panjin for the seismic fortific

12、ation intensity VII and VIII. Gravel piles are adopted as the major prevention against ground soil liquefaction in anti- seismic norms, but liquefaction discrimination standard is still in its s

13、low development and currently anti- liquefaction discrimination for gravel piles is still based on the empirical approach, namely new information will be based on the sand body reaction during t

14、he previous earthquakes and be modified accordingly. Meanwhile dead load and dynamic penetration tests at the site for single pile composite foundation and multiple piles composite foundation are

15、 applied generally in determining the composite foundation load for the gravel piles, but each process is rather complicated, unfavorable to the fast evaluation of gravel pile load capacity. Th

16、erefore ,based on liquefaction discrimination by surface wave detection method plus quantities of construction comparison tests with overall implication of compaction of composite foundation, vibro- densifica

17、tion effect and drainage effect of piles, a fast discrimination method is established where measured test values of surface wave velocity method and dynamic penetration method and dead load tes