U-bolt Thiab Pre-camber Setting

U-bolt xaiv thiab embedment. U-shaped bolts muaj ob hom, ib qho rau kev kho qhov kawg ntawm qhov chaw ua haujlwm, ib qho rau kho qhov kawg ntawm txoj haujlwm anchoring. Kev tsim thiab kev suav feem ntau yog ua tiav rau U-shaped bolt uas ua lub luag haujlwm thauj khoom ntawm lub nraub qaum kawg kom ntseeg tau tias nws rub lub zog ua tau raws li qhov yuav tsum tau ua thaum khaws cov khoom seem. U-shaped bolts yuav tsum tau teem caij nyob rau hauv txoj hauj lwm ntawm lub hauv paus thiab theem nrab kab teeb kom tsis txhob muaj kev puas tsuaj rau lub ntsiab qauv. U-shaped ntsia liaj qhov rooj thiab lub ntsiab steel bar yog hla. Yog li ntawd, teem caij hla kev ua haujlwm raws li qhov tseeb ntawm cov hlau bar ntawm qhov chaw kom tsis txhob muaj qhov tsis ua haujlwm ntawm U-shaped ntsia liaj qhov rooj. Tom qab kev teeb tsa tiav lawm, xyuas tus lej, qhov chaw thiab qhov tseem ceeb ntawm U-shaped bolts kom tsis txhob muaj qhov tsis ua haujlwm rau nruab Beret ncej nyob rau theem tom ntej.

Pre-camber tsim.

① Deflection ntawm qhov tsis ncaj ncees lawm: Raws li lub hauv paus ntsiab lus ntawm kev ua haujlwm virtual, lub deflection ntawm overhanging tsis ncaj ncees lawm qhov fm=n (n+1) mm.

② Deflection nyob rau hauv load: txiav txim siab hais tias lub Upper load yog yooj yim raws li ib tug uniform load, lub deflection nyob rau hauv lub kawg ntawm lub cantilevered beam fz=ql ^4/ (8EI).

③ precamber ntawm cantilever Beret ncej f=fm+fz+fg.