BS港工规范第六章.docx

第六章翻译NOTE. For convenience, throughout this section the term piles is used to represent the supporting elements, e.g. individual bearing piles, barrettes, small caissons, whatever their cross section and method of installation.提示：为了方便起见,在本节中，不同截面和安装方法的单承桩,小垛,小型沉箱等支撑结构都用术语桩来表示。6.1 GeneralSuspended deck structures may be of steel, concrete ortimber, or of a combination of more than one of thesematerials.Vertical loads are resisted by the piles, which derive their support from the soil by end-bearing or shaft friction, or acombination of the two. Horizontal loads may be resisted in several different ways, some of which impose uplift.The deck is generally used to distribute locally applied horizontal loads within the structure.Structures may be classified as rigid or flexible as regards their response to horizontally applied loads. The degree of flexibility depends upon the materials used, the ground conditions and the framing of the structure.6.1 前言悬空梁板结构可以是钢、混凝土、木或这些材料的组合。垂直荷载由桩通过与土体摩擦、端承或两者组合来承担。水平载荷可可以由几个不同方法抵抗，其中一些考虑向上作用。面板通常用于分散局部的结构内部水平载荷。受水平载荷时，结构可分类为刚性和柔性。柔性程度取决于结构材料、地基条件和结构的框架。6.2 Suitability Suspended deck structures will usually be the most suitabletype in the following circumstances: (a) ground consisting of weak upper materials overlying a stronger stratum;(b) ground immediately below seabed consisting of suitable material for bearing piles;(c) non-availability of suitable backfill for use in a retaining wall type of quay;(d) necessity to minimize interference with hydraulic regime;(e) great depth of water.If the seabed is rocky, piles may be installed with some form of pretreatment of the ground.6.2适用性悬空梁板式结构通常在下列情况下最为适用：（a）地基由软覆盖层和下层坚硬土体组成；（b）靠近海床的土体中有能承桩的地层；（c）不能提供合适的码头挡土墙回填物；（d）必须尽量减小水流影响；（e）深水区域。如果海床是岩石，可以通过地面预处理的方式沉桩。6.3 ApplicationsSuspended deck structures are commonly used for marginal quays and finger jetties.When used for marginal quays, the structure will usually be built above a revetted slope, which rises from dredged level near the berthing