A new breakwater is on demand to replace the function of an existing steel sheet pile cellular-cofferdam at TPPI Tuban Port of East Java. The existing breakwater has been partially damaged due to severe corrosion and hard attack by monsoon waves. An open frame structure of spun pile vertical-wall breakwater is proposed as an alternative design. The spun pile is a pre-stressed concrete hollow cylinder pile with outer diameter 1800mm and thickness of 200mm. The spun pile lengths vary between minimum 28m to maximum 33m according to the position of hard soil against seabed. The new breakwater is designed to stand against 100yrs RP wave with Hs = 4.7m. Wave height variations around the structure are simulated using Boussinesq Wave module of MIKE21 software, while SAP2000 is used to calculate the strength of superstructure to withstand existing loads and certain load combinations. Plaxis software is used mainly to analyze substructure using existing soil data. This article describes the design process of spun pile vertical wall breakwater, started from loads calculation, then define load combinations, analyze structure in SAP2000, analyze structure in Plaxis, determination of specification and dimension, to design drawings creation.

需要一个新的防波堤来取代东爪哇 TPPI 图班港现有钢板桩蜂窝式围堰的功能。由于严重腐蚀和季风波的猛烈袭击，现有的防波堤已部分损坏。提出了一种旋转桩垂直墙防波堤的开放框架结构作为替代设计。旋压桩为外径1800mm、厚度200mm的预应力混凝土空心圆柱桩。根据硬土对海床的位置，旋转桩的长度在最小 28m 到最大 33m 之间变化。新的防波堤设计用于抵御 Hs = 4.7m 的 100 年 RP 波。使用 MIKE21 软件的 Boussinesq Wave 模块模拟结构周围的波高变化，而SAP2000用于计算上部结构承受现有载荷和某些载荷组合的强度。Plaxis 软件主要用于利用现有土壤数据分析下部结构。本文介绍了旋转桩竖墙防波堤的设计过程，从荷载计算开始，然后定义荷载组合，在SAP2000中分析结构，在Plaxis中分析结构，确定规格和尺寸，再到设计图纸创建。