02577nam a2200241   450000500170000000800410001703500150005810000240007324500380009726000520013530000100018749000270019750001450022450200580036952015300042765000390195770000300199670000490202670000510207571000850212681000590221185600650227020260818213908.0290798         th                  eng    a.b105993070 aSongkiat Matupayont10aShear strength of bolt anchorages  aBangkok :bAsian Institute of Technology,c1989  a59 p.1 aThesis ;vno. ST-89-09  aA thesis submitted in partial fulfillment of the requirements for  the degree of Master of Engineering, School of Engineering and Technology  aThesis (M.Eng.) - Asian Institute of Technology, 1989  aThis study presents and discusses the results of an experimental  investigation of anchor bolts embedded in an unreinforced concrete block,  monotonically loaded in shear. All anchor bolts were embedded sufficiently  so that concrete wedge cone failure would occur in most cases. Test  programs were mainly conducted on single bolt, double bolt and 4-bolt  anchorage in group with varied edge distances and bolt spacings. Double  bolt anchorages were loaded in shear in perpendicular and parallel  direction to bolt line. Single bolt anchorage tests were conducted to  compare the results with the double and group of 4-bolt anchorage test  results.  The effect of bolt spacing of double bolt anchorage has been  investigated. It was found that the shear strength of double bolt anchorage  increases with the bolt spacing. The minimum spacings to produce twice the  shear strength of single bolt anchorage are around 8de and 2de for the  cases of bolt line perpendicular and parallel to the loading direction  respectively (see Figs.11 and 12}. The influence of the holding condition  of the concrete block, loading plate size and torque for tightening bolt  have been found to affect the shear strength of bolt anchorage (see Figs.  9, 10, 11 respectively}  The empirical formula to predict the ultimate shear strength of bolt  anchorage group is proposed based on the test results of single and double  bolt anchorages under the particular conditions and controlled parameters  (see the calculation examples in Appendix B). 0aAnchorage (Structural engineering)1 aUeda, Tamon, eChairpeson0 aPichai Nimityongskul,eExamination Committee0 aWorsak Kanok-Nukulchai,eExamination Committee2 aDanish International Development  Agency (DANIDA) , Denmark, eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. ST-89-09  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B18121