Prefabricated tivthaiv kev tiv thaiv kev tswj
(1) Ua ntej yuav muab cov phaj lam rhaub ua ke, kev txhim kho thiab kev txhawb nqa yog nce raws li kev muaj peev xwm.
(2) Qhov siab tshaj plaws kev sib tsoo txhawb kem kem zauv yog teem raws li qhov kev sib khoob uas xam ntawm kev txhawb nqa nruab. Qhov kev txhawb nqa ntawm txhua tshooj tsev ntawv yuav tsum tsis pub tsawg tshaj plaub.
(3) Tom qab kev txhim kho ntawm cov phab ntsa sab hauv thiab sab nraud thiab cov phiajcim, cov kev sib tw tshwj xeeb rau cov ntaub ntawv thov kev pabcuam raug ntsia thiab txhawb raws li cov qauv tsim. Txhua phaj prefabricated txhawb plaub los yog ntau dua. Vim tias kev siv cov cuab yeej kho kom muaj voos 4 voos, txoj kev zawm hniav tsis tuaj yeem txhawb nqa ntawm phab ntsa. 500 nrug. Qhov kev ncua deb ntawm kev them nyiaj yug thiab kev txhawb zog siab tshaj 1.5m. (xam raws li hauv qab no)
Kev siv cov kev tshaj tawm kev lag luam Power Fawb rau cov lus teb ntawm cov lus teb, muab qhov tseem ceeb ntawm qhov 1.2, qhov kev ntsuas qhov tseem ceeb ntawm 1.4, nqa ib qho khoom ntawm 3kN / m2, ncej nrawm 1500mm, lub chav tsev ntawm 1500mm. Qhov sib piv tus nqi yog: Qhob tus kheej qhov hnyav, 120 hli xam thickness, Fc = 1.5 × 26kN / m3 × 0.12m × 1.5m = 7.02kN / m; nyob load Fl = 1.4 × 3.0kN / m3 × 1.5m = 6.3 kN / m;
Qhov siab tshaj plaws ntawm lub yeeb nkab steel yog Mmax = 3.3 KN.m, thiab qhov siab tshaj plaws quab yuam yog Vmax = 12.1 KN. Saib ntawm qhov yam ntxwv ntawm qhov cross-section, nws tau pom tias cov yeeb nkab hlau Wx = 44847.7mm3 thiab thaj tsam hauv cheeb tsam A = 17.28cm2.
Qhov siab tshaj plaws tho kev nyuaj siab yog σmax = Mmax / Wx = 3.3 × 106 / 44847.7 = 73.58 N / mm2
Qhov siab tshaj plaws tshee yog: τmax = 1.5Vmax / A = 1.5 × 12.1 × 103 / 17.28 × 102 = 10.5KN / mm2
Qhov siab tshaj plaws deflection dmax = 1mm <1200mm 500="">
