Av qeeg, cua daj cua dub, ntev - lub sij hawm vibrations... Niaj hnub nimno vaj tse yuav tsum tau tsim thiab tsim kom muaj peev xwm tiv taus cov kev sim siab no. Tshaj li lub hauv paus ntsiab lus tseem ceeb, ntoo -raws li cov khoom siv tseem ceeb dua -LVL- yog qhov tsis pom "tiv thaiv" hauv lub tsev nrog nws qhov tshwj xeeb resilience, ntsiag to txhim kho tag nrho kev nyab xeeb thiab ruaj khov ntawm cov qauv.
1. Tsis yog "Lub Zog" xwb: Kev ua siab ntev yog qhov tseem ceeb
Tau ntsib nrog lub zog loj, lub zog siab ntshiab qee zaum txhais tau tias brittleness. Kev ruaj ntseg hauv tsev yuav tsum tsis yog tsuas yog lub peev xwm los "dhau lub brunt" ntawm kev ntxhov siab tab sis kuj yog "resilience" los nqus thiab tawg lub zog. Cov txheej txheem txheej txheej ntawm LVL muab nws zoo heev hauv kev sib txhuam kev ua haujlwm hauv qab load. Thaum seismic nthwv dej los yog cua muaj zog xa cov kev vibrations, LVL Cheebtsam (xws li shear plates nyob rau hauv phab ntsa thiab nruam beams nyob rau hauv lub ru tsev) yuav zoo dissipate ib co zog los ntawm cov feeb kev sib txhuam ntawm cov veneers sab hauv thiab elastic deformation ntawm cov nplaum txheej, txo cov kev cuam tshuam ntawm kev co ntawm lub ntsiab qauv thiab tiv thaiv kev nyuaj siab.
2. Sib ntaus sib tua "Lub Sijhawm Fatigue": Kev Ua Haujlwm Zoo Nyob Hauv Lub Sijhawm Ntev - Lub Sijhawm Loads
Kev ruaj ntseg hauv tsev tsis yog tsuas yog teb rau cov xwm txheej huab cua tam sim no xwb tab sis kuj tiv thaiv "kev qaug zog" tas li ntau xyoo ntawm kev siv. Lub siab tsis tu ncua ntawm cov slabs hauv pem teb thiab kev vibrations me ntsis los ntawm cov khoom siv ua haujlwm tuaj yeem ua rau qeeb "ceep" hauv cov ntaub ntawv. Piv nrog rau cov khoom ntoo, LVL raug siab - kub thiab siab - siab shaping thiab homogenization kev kho mob, ho txhim kho nws creep kuj. Qhov no txhais tau hais tias LVL siv los ua cov kab hauv pem teb thiab ntev -span joists nthuav tawm tsawg kawg deflection tom qab ntau xyoo ntawm kev siv, ua kom lub tsev nyob ntev -lub sij hawm flatness, kev nyab xeeb, thiab tiv thaiv kev ncaj ncees ntawm nws sab hauv tiav.
3. Kev Nyab Xeeb Tus Nqi: Raws li "Key Reinforcement Component"
Hauv kev txhim kho lub tsev thiab kev txhawb nqa, LVL tau dhau los ua " riam phom zais cia" hauv tes ntawm cov kws ua haujlwm. Nws lub zog siab -rau- qhov hnyav piv thiab hloov tau yooj yim ua haujlwm ua rau nws zoo tagnrho raws li cov khoom siv "post-reinforcement". Piv txwv li, LVL thav duab tuaj yeem cog rau hauv cov cib qub - cov qauv pob zeb los txhim kho kev ncaj ncees tag nrho, lossis LVL panels tuaj yeem txuas rau hauv qab ntawm cov pob zeb ua vaj tse thiab slabs rau flexural reinforcement. Lub teeb yuag, nws tsis ntxiv lub nra hnyav rau cov qauv uas twb muaj lawm; muaj zog thiab resilient, nws zoo faib loads. Qhov "txhim kho net" woven los ntawm LVL (Laminated Veneer Lithium) txhaj cov kev nyab xeeb tshiab rau hauv cov tsev uas twb muaj lawm nrog kev cuam tshuam tsawg.
Kev nyab xeeb nyob rau hauv cov tsev niaj hnub no yog ib txoj haujlwm ua haujlwm. LVL ntoo, qhov zoo li cov khoom siv niaj hnub no, tom qab siv cov thev naus laus zis niaj hnub no, ua lub luag haujlwm tseem ceeb ua "tus neeg saib xyuas zoo" hauv cov tsev vim nws qhov tshwj xeeb toughness thiab durability. Nws ua rau peb nco ntsoov tias qhov kev nyab xeeb siab tshaj plaws feem ntau tsis yog qhov kev sib tw nruj tshaj plaws, tab sis muaj kev txawj ntse uas tuaj yeem nqus, daws, thiab sib koom ua ke. Thaum nrhiav lub tsev siab thiab ua haujlwm tau zoo, qhov pom tsis tau "ntoo tiv thaiv net" tau dhau los ua lub hauv paus ruaj khov rau kev tsim kom muaj kev nyab xeeb thiab nyab xeeb nyob ib puag ncig.
