不同加載方式SIP墻體的抗剪性能

王雪花 方露 吳智慧 倪駿 費本華

摘要：以3種不同的單向加載方式對以木質OSB覆面的SIP墻體進行側向加載實驗，對比分析3種加載方式下SIP墻體的破壞形式及這3種加載方式對墻體抗剪性能參數的影響，結果表明：3種加載方式得到的墻體的抗剪性能指標有所差異，其中，采用ISO22452加載協議，即對墻體施加持續增加載荷的加載方式所得到的極限承載力最大、極限位移和延性系數居中，分別為46.06 kN、71.83 mm、3.31；采用ASTM E72-05加載時極限承載力居中、極限位移及延性系數最大，分別為：40.66 kN、76.97 mm、4.07。采用ASTM E564-06加載，即對墻體施加階段載荷并使階段目標載荷持續作用一段時間的方式，所得到的極限承載力、極限位移及延性系數最小，分別為37.73 kN、54.92 mm、2.91；3種加載方式對墻體破壞形式的影響不大。

關鍵詞：SIP墻體；靜力單向加載協議；破壞形式；抗剪性能

中圖分類號：TU531.11

文獻標志碼：A 文章編號：1674-4764（2016）03-0041-07

Abstract：Three different static loading protocols were used in the lateral loading experiment on SIP wall covering with oriented strand board （OSB）， and failure forms and shear performance of the SIP wall were recorded and analysed treated by three loading protocols： ISO 22452， ASTM E72-05 and ASTM E564-06. The results showed that shear performances of the SIP walls under the three loading protocols were different， ultimate bearing capacity and ultimate displacement were the largest one， and the ductility factor was the middle one which loaded by ISO 22452， the value were 46.06kN， 71.83mm， 3.31 respectively； while ultimate bearing capacity was the middle one， ultimate displacement and ductility factor were the largest one which loaded by ASTM E72-05， the datas were 40.66kN， 76.97 mm， 4.07 respectively； ultimate bearing capacity 37.73 kN， ultimate displacement 54.92 mm and ductility factor 2.91 were the smallest treated by ASTM E564-06 among the three loading protocols. Failure forms of the walls under the three loading protocols were similar， there were little influence on failure forms caused by the three loading protocols used in this research.

Keywords：SIP wall； static loading protocol； failure forms； shear performance

結構保溫板，也稱結構隔熱板 （SIP，structural insulated panels），是以硬質發泡材料或其他保溫材料為夾心層，外貼壓型鋼板、木板、水泥加壓板等薄板的三明治型的復合板材，常見的芯材種類有：EPS、XPS、PU以及無機類保溫材料等，貼面板有：壓型鋼板、歐松板、桔梗板等木質板材、水泥加壓板、石膏板等無機板材。該結構類型的復合板材具有良好的保溫隔熱性能、抗震性能及輕質高強的特點[1-2]， 提高了木材利用率，創造出比傳統木結構形式更加先進的SIP 住宅系統（structural insulated panel system，SIPs） [3-4]，在北美和歐洲等地，以SIP為基本單元的SIP住宅系統廣泛用于民用和商用住宅，SIPs建造就像搭積木一樣簡單快捷，可大大節省建造時間和建造費用。……