Estimation of Lateral Resistance of Anchor-Bolt Joints for High Resistant Timber Residential Constructions

高强度木结构住宅建筑锚栓接头横向阻力的估算

基本信息

批准号：
15380115
负责人：
HIRAI Takuro
金额：
$ 6.59万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15380115/
关键词：
Multiple anchor-bolt joints Lead-hole clearance Length diameter ratio Effective lateral resistance Initial stiffness Energy absorption canacity Monte Carlo simulation Stepwise linear analysis 弾性床上の梁理論破壊面圧変位耐力壁線一面せん断試験

项目摘要

Lateral resistance of single-anchor-bolt joints with 12 mm or 16 mm bolts was examined experimentally for ordinary specifications of Japanese post and beam constructions. Anchor-bolt joints loaded perpendicular to the grain had much lower maximum resistance, much smaller maximum slips and much smaller energy capacities. Maximum lateral resistance and maximum slips of the anchor-bolt joints with 16 mm bolts varied in wide range. Safety factor calculated from the fifth percentile lower limit maximum resistance and the short term allowable resistance was larger for the joints with 12 mm bolts than for the joints with 16 mm bolts.Monte Carlo simulations were conducted using the test results to estimate the effective lateral resistance of multiple anchor-bolt joints with lead-hole clearances. Anchor-bolt joints loaded perpendicular to lateral forces were not recommended to be counted as supplementary resisting elements because the supplementary shares of them were far less than those expected from the allowable lateral resistance of them. Multiple anchor-bolt joints with small length/diameter ratios had comparatively lower effective resistance ratios than multiple anchor-bolt joints with large length/diameter ratios. The effective resistance of multiple anchor-bolt joints was affected not only by lead-hole clearance or number of bolts but also variance of load-slip characteristics of single anchor-bolt joints.Monte Carlo simulations were also conducted using load-slip curves of single anchor-bolt joints given by the stepwise linear analyzes to estimate the effect of sill thickness on the load-slip characteristics of single anchor-bolt joints. The simulated results showed that lead-hole clearance affected more clearly as length/diameter ratios of single anchor-bolt joints decrease.

通过实验检查了具有12 mm或16 mM螺栓的单螺栓螺栓接头的横向电阻，以实验对日本邮政和束结构的普通规格进行了检查。垂直于谷物的锚螺栓接头具有较低的最大电阻，最大较小的滑移和较小的能量能力。锚螺栓接头的最大侧向电阻和16毫米螺栓的最大滑动在宽范围内变化。从第五个百分位的下限最大电阻计算得出的安全系数，对于12 mM螺栓的接头，短期允许电阻比具有16 mm螺栓的接头更大。使用测试结果进行了蒙特特Carlo模拟，以估算带有铅孔孔隙孔的多个锚固螺栓接头的有效横向电阻。不建议将垂直于横向力的锚螺栓接头算作辅助抵抗元件，因为它们的补充份额远低于其允许的横向电阻的预期。长度/直径比的多个锚螺栓接头的有效性比相对较大的锚固螺栓接头较大，其长度/直径比的有效性比相对较低。多个锚螺栓接头的有效电阻不仅受铅孔间隙或螺栓数量的影响，而且还受到单个锚螺栓接头的负载滑动特性的方差。模拟结果表明，随着单锚螺栓接头的长度/直径比减小，铅孔清除率更清楚地影响。