遮帘式板桩码头的遮帘效果及其影响因素分析

为使遮帘桩达到更好的遮帘效果,需要对相关的影响因素进行分析,如遮帘桩与前墙的距离(桩墙间距)、遮帘桩之间的间距(桩间距)。结合工程实例,建立了有限元分析模型,通过计算前墙所受土压力及弯矩,分析了遮帘桩的遮帘效果。进一步利用有限元法分析了桩墙间距与桩间距对遮帘效果的影响。结果表明:当桩墙间距增大时土压力增大,而土压力的增幅减小;桩间距存在临界值,当桩间距小于临界值时土压力的变化很小,当桩间距超过临界值时土压力变化明显。

Analysis on sheltering effect of covered sheet pile wharf and its influencing factors

In order to achieve better sheltering effect, it is necessary to analyze the influencing factors such as the distance between the front wall and sheltering piles and the spacing between piles. Combined with a project example, a finite element model of traditional sheet pile wharf structure was established, and the soil pressure and bending moments of front wall were calculated. The sheltering effect of covered sheet pile and the influencing factors were also analyzed. The results show that the earth pressure of the front wall increases with the increase of the distance between the front wall and sheltering piles, but the increasing amplitude of the earth pressure is decreased. Meanwhile, the spacing of piles exists a critical value, and the amplification of earth pressure has a little increase when the spacing of piles is less than critical piles spacing. On the contrary, the change of the earth pressure is obvious.