Sib tshooj ntawm cov hlau beams: strengths and weaknesses

Qhov zoo tshaj thiab lub zog ntawm cov slab nyob rau hauv lub tsev tej qauv tshwj xeeb stringent uas yuav tsum tau yuam. Vim hais tias ntawm lawv cov kev ntseeg nyob rau hauv lub preservation ntawm lub sam xeeb ntawm lub tsev thiab kev ruaj ntseg ntawm cov neeg nyob rau hauv nws. Tam sim no, qhov kev siv ntawm ob hom ntawm cov plag tsev siv: beam thiab girderless. Ua ntej, raws li ib tug muaj zog dua, feem ntau siv.

Rau txawv hom ntawm lub tsev yog siv raws li slab rau steel beams, thiab cov ntoo thiab ua kev reinforced. Hom cov cab kuj hais thaum nyob rau hauv lub feem ntau nyob rau tus yam ntxwv ntawm lub tsev qauv. Npaj overlapping saum ntoo kab teeb permissible xwb nyob rau hauv me me private tsev, uas nws qhov siab tsis pub tshaj peb storeys. Nyob rau hauv lwm yam mob, tus hlau lug siv. Nkawd ob leeg zoo thiab disadvantages.

Sib tshooj ntawm cov hlau beams yog check heev thiab txhim khu kev qha. Qhov no yog ib qho ntawm lawv lub ntsiab zoo. Tej kab teeb yuav muab siv rau sufficiently dav spans. Vim hais tias lawv yog cov yuav raug deflections, feem ntau npaum yog siv cov channel hlau thiab kuv-section. Tej yam zoo li no yog muab rau ib tug dav ntawm spans mus txog 24 meters. Nyob rau hauv cov ntaub ntawv no, lub yov nruab nrab ntawm lawv yuav tsum tsis ntau tshaj ib tug Meter. Hlau beams yog fireproof thiab yog resistant rau fungi thiab microorganisms.

Txawm li cas los, tseem muaj disadvantage - lawv yog cov raug rau corrosion. Yuav kom ua lub overlap ntawm hlau beams ntau txhim khu kev qha, lub tom kawg feem ntau qhwv nrog ntaub ntawv sib txawv rau tso cai rau lawv nkag tau mus rau cov dej. Ib tug zoo xws li cov txheej txheem yog siv nyob rau hauv kev txiav txim los txhim kho lawv thaum tshav kub kub thiab suab rwb thaiv tsev zoo. Yog hais tias tsim nyog, kho corroded chaw ntxiv dag zog rau nrog hlau paib.

Qhov tseeb muab xam los ntawm cov tshooj ntawm cov hlau beams yog qho tseem ceeb heev. Qhov tseem ceeb tshaj plaws nyob rau hauv no qhov teeb meem - xaiv tus xauj tsev nrog rau qhov tsim nyog yam ntxwv. Nws yuav tsum muaj txaus nyob rau hauv txhua rooj plaub ntug ntawm kev ruaj ntseg. Thaum tsim lub project yog npaum li cas mus rau hauv tus account xws tseem ceeb raws li lub dav ntawm lub ncua ntawm lub beam kauj ruam, tus payload mus rau lub soffit. Thaum zoo li no yog coj mus rau hauv tus account raws li lub sij hawm teem ntawm lub yav tas thiab qhov nyhav. Rau nthab payload tivthaiv yuav tsum tsis txhob ntau tshaj 75 kg ib m ^2. Rau interstorey thiab av - 150 kg ib m ^2.

Thaum tus ntaus ntawv yog siv kom zoo tshaj Nakata ntoo los yog khaub-ncaws nyias qhob slabs. Tej designs muaj peev xwm ntawm tiv enormous lim. Nws yog tej zaum kuj siv Khoom qab nthab rau steel kab teeb. Qhov tseeb yog tias mus teem lub formwork thiab ncuav qhob ncua tsis ntxiv kev pab txhawb nqa los ntawm hauv qab no yog problematic. Nyob rau hauv tas li ntawd, cov kev siv nyob rau tib lub sij hawm yog ib tug ntau npaum li cas txhim khu kev qha. Nyob rau hauv tej rooj plaub, lub tsev slabs thiab siv ntoo coj tus kheej hais.

Lub ntsiab kom zoo dua ntawm xws li ib yig, lub overlap ntawm hlau beams, suav hais tias nws lub zog li zoo raws li lub txheeb ze yooj yim ntawm txij nkawm thiab kho. Nws muaj peev xwm mas zoo kawg li load, hloov nws mus rau ntawm cov phab ntsa thiab kev txhawb nqa, thaum ua lub stability thiab rigidity ntawm tag nrho cov tsev.