CT1780 | Experiment-Based Column Performance Database - RP1

The created column database, collecting column tests from the United States and New Zealand, includes column dimensions, materials, design codes, reinforcement details, experimental column boundary conditions, experimental lateral strengths and displacements, and computed shear capacities from concrete and transverse reinforcement, in addition to damage state descriptions and corresponding limit state values. The documents describing the experimental tests are linked in the column database so that users can directly download the documents through the column database. Steel yield strengths were recorded for longitudinal and transverse reinforcements, respectively. The transverse reinforcement spacings were categorized as inside and outside plastic hinge regions. The spacing inside plastic hinge regions was used to distinguish column design eras, whereas the spacing outside plastic hinge regions was used to determine the minimum column shear capacity. Both transverse reinforcement ratio and transverse volumetric ratio are provided in the column database. The values of the transverse reinforcement ratio and transverse volumetric ratio are different for rectangular columns. The 199 columns were classified into “Era-3 Flexural Columns” (48 columns), “Era-2 Flexural Columns” (71 columns), “Era-1 Flexural Columns” (16 columns), “Era-1 Lap Spliced Flexural Columns” (7 columns), “Era-3 and Era-2 Shear Columns” (32 columns), “Era-1 Shear Columns” (22 columns), and “Era-1 Lap Spliced Shear Columns” (3 columns). Seven column damage state thresholds (CDSTs) are used in the column database to depict damage states and corresponding displacement ductility values.

The development of such a new column performance database and column capacity limit state (CCLS) models for collecting comprehensive and harmonious CCLSs is necessary due to incomplete and missing data in some of columns in the PEER structural performance database (Berry et al., 2004). There are 416 columns in the PEER database, while 199 columns were recently collected in a resource package (RP1) of this project. The overlap percentages of flexural columns, mixed flexure-shear columns, shear columns, and lap-spliced columns are respectively 63%, 58%, 57%, and 31% of the corresponding columns in RP1. Besides, the classification algorithm for column failure modes adopted in the PEER database is not accurate enough for all columns. Thus, RP1 re-assigns a failure mode to each column.

构建的柱数据库收集了美国和新西兰的柱试验数据，包含柱尺寸、材料、设计规范、配筋细节、试验柱边界条件、试验侧向强度与位移、混凝土及横向钢筋的计算抗剪承载力，以及损伤状态描述和对应极限状态值。描述试验的文档已链接至柱数据库，用户可通过该数据库直接下载文档。纵向钢筋和横向钢筋的钢材屈服强度分别进行了记录。横向钢筋间距分为塑性铰区（plastic hinge regions）内部和外部两类：塑性铰区内部的间距用于区分柱设计年代，而外部间距则用于确定柱的最小抗剪承载力。柱数据库中同时提供了横向配筋率和横向体积配筋率，矩形柱的这两项指标数值存在差异。该数据库共纳入199根柱，分为“3代受弯柱”（48根）、“2代受弯柱”（71根）、“1代受弯柱”（16根）、“1代搭接受弯柱”（7根）、“3代及2代受剪柱”（32根）、“1代受剪柱”（22根）及“1代搭接受剪柱”（3根）。数据库采用7个柱损伤状态阈值（Column Damage State Thresholds, CDSTs）描述损伤状态及对应位移延性值。

由于PEER结构性能数据库（Berry等，2004）中部分柱的数据不完整或缺失，开发新型柱性能数据库及柱承载力极限状态（Column Capacity Limit State, CCLSs）模型以收集全面协调的CCLS数据十分必要。PEER数据库包含416根柱，本项目资源包1（Resource Package 1, RP1）近期收集了199根柱。其中受弯柱、弯剪混合柱、受剪柱及搭接柱与RP1对应柱的重叠比例分别为63%、58%、57%和31%。此外，PEER数据库采用的柱破坏模式分类算法并非对所有柱均足够准确，因此RP1为每根柱重新分配了破坏模式。