水平荷载作用下整体式桥台桥梁受力性能研究

整体式桥台桥梁近些年在国内外出现的越来越频繁,相比于传统的桥梁结构,其在提高桥梁的耐久性等方面发挥着极大的优势作用。以实际工程为背景和试验对象,对整体式桥台桥梁的受力性能进行了分析和研究,并通过与桩内应力试验实测值进行分析,得出在制动力的作用下,单侧桥台的受力相似于均匀温差下的受力。结果表明,P-y曲线法在分析整体式桥台桥梁水平荷载下的受力性能方面具有较好的可行性。

Analytical and Numerical Study on the Uniformity of Temperature Difference Field in Heat Exchangers

The relations of the uniformity factor of temperature difference field with the effectiveness of heat exchangers were studied analytically and numerically. The results for eleven kinds of heat exchangers show that the more uniform the temperature difference field, the higher the effectiveness of heat exchanger for a given Ntu and Cr.