The new Crown Sydney Hotel Resort development (under construction) at Barangaroo will be one of Sydney's tallest and most iconic buildings. The project will transform a former container wharf into a 270m tall six-star luxury hotel tower with podium structure and three-level basement. To support this large structure, a combination of diaphragm walls, barrettes and piles were employed. This paper focuses on the design methodology adopted for the pile foundations. A particular methodical design process has also been developed to incorporate this design methodology into an in-house spread sheet to provide rapid responses to changes occurring with pile design during construction.The development is located at a site that has undergone significant alteration in the past century. Earlier use of the site as finger wharfs and later conversion to a container wharf has seen the site backfilled with highly variable fill material such as slag, concrete and steel mixed in with sandy and clayey soils. The marine influenced erosional environment has led to sandstone cliffs across the site, resulting in rock levels that vary significantly over short distances across the site. Furthermore, the Pittman LIV dyke runs across the site, adding further complexity to the site geology. In addition to the complex site geology, tight settlement and deflection criterion were also imposed on the piles to meet serviceability requirements. These constraints coupled with the large number of heavily-loaded piles (up to about 50MN) necessitated a robust pile design approach which could be adapted to any design change. To calculate settlement of rock socketed piles, the Rowe and Armitage method is a well-accepted method. However, due to the large number of piles and numerous changes in pile loadings, it was not preferred in this case due to the time taken for calculation and there was a need to develop an efficient method. Therefore, the analytical Carter and Kulhawy method was adopted to make the process quicker. This method was also checked against Rowe and Armjtage and also checked against numerical modelling. An in-house spread sheet was also developed to streamline this process. The information for pile design was also integrated to a Building Information Management System (BIM) to check against clashes.
展开▼
机译：Barangaroo的新皇冠悉尼Hotel Resorts开发（正在建设中）将成为悉尼最高，最具标志性建筑之一。该项目将使前集装箱码头转化为270米高的六星级豪华酒店塔楼，讲台结构和三层地下室。为了支持这种大结构，采用隔膜墙，管道和桩的组合。本文重点介绍了桩基采用的设计方法。还开发了特定的有条学设计过程以将这种设计方法纳入内部涂抹片，以便在建设期间与桩设计发生的变化提供快速响应。发展位于过去世纪经历过重大改变的网站。早期使用该网站作为手指码头和后来转换到集装箱码头，已经看到该网站用高度可变的填充材料来填充，例如炉渣，混凝土和钢与桑迪和粘土土壤混合。海洋影响的侵蚀环境导致了砂岩悬崖，导致岩石水平，在该网站上的短距离内变化显着变化。此外，Pittman Liv Dyke在本网站上运行，为网站地质增加了进一步的复杂性。除了复杂的场地地质外，还对桩上的紧密结算和偏转标准还施加了可维修性要求。这些约束与大量的重载桩（高达约50mn）耦合，需要一种强大的绒头设计方法，其可以适应任何设计变化。为了计算岩石插座桩的沉降，Rowe和Armitage方法是一种良好的方法。然而，由于桩载荷数量大量和众多变化，在这种情况下，由于计算所需的时间，并且需要开发一种有效的方法。因此，采用分析卡特和KulHawy方法来更快地制造过程。还针对ROWE和ARMJTAGE检查此方法，并检查数值建模。还开发了一个内部涂抹纸以简化此过程。桩设计的信息也集成到建筑信息管理系统（BIM）中，以检查冲突。
展开▼
