Peru Logistics Warehouse Project: Grid Structural Analysis Thiab Design Scheme

Peru Logistics Warehouse Project: Grid Structural Analysis thiab Design Scheme

 

Qhov project no yog lub tsev khaws khoom thauj khoom hauv Peru, nrog lub dav hlau trapezoidal. Cov tub ntxhais qhov ntev yog: dav 80.59 ~ 114.1m (ob qho tib si rau sab ntawm lub trapezoid), ntev 190m, lub tsev siab 15.2m; Cov txheej txheem ncua yog 23 ~ 24m, thiab kab sib nrug (qhov nrug ntawm txhua qhov) yog 22m. Tus neeg siv khoom tus qauv tsim tau txais cov qauv truss. Raws li qhov loj me, cov yam ntxwv ntawm kev thauj khoom thiab cov kev xav tau ntawm cov khoom siv logistics, CBC qhia txog kev ua kom zoo ntawm cov qauv tsim rau ib daim phiaj. Cov hauv qab no yog cov ncauj lus kom ntxaws los ntawm plaub yam: lub zog ntawm cov qauv, steel ncej tsim, cov khoom seem thiab ntau npaum li cas, thiab qhov zoo thiab qhov tsis zoo ntawm daim ntawv qauv no.

 

 

 

Lub truss qauv yog ib tug planar force-cov kabmob, feem ntau yog tsim los ntawm sab sauv chords, qis chords thiab cov neeg hauv lub vev xaib. Nws lub zog- cov yam ntxwv ntawm cov kabmob yog tsom rau hauv lub dav hlau: cov chords sab sauv dais siab, qis chords dais nro, thiab cov tswv cuab hauv lub vev xaib (cov tswv cuab kab pheeb ces kaum thiab cov tswv cuab ntsug) xa cov quab yuam. Tag nrho cov load yog sib npaug los ntawm axial quab yuam ntawm cov tswv cuab. Ua ke nrog cov phiaj xwm tsis, nws lub zog -cov kabmob muaj qhov txwv tsis pub muaj:

 

1. Tsis txaus span adaptability: Qhov ncua ntawm qhov project no ncav cuag 23 ~ 24m, uas yog nyob rau hauv nruab nrab -span qeb (raws li Technical Specification for Space Grid Structures JGJ 7-2010, qhov nruab nrab ncua sij hawm yog 30m ~ 60m, thiab 23 ~ 24m qhov kev txwv yog ze rau nruab nrab. Rau cov qauv truss nyob rau hauv qhov ncua sij hawm no, nws yog ib qho tsim nyog yuav tsum tau ua kom zoo dua qhov loj ntawm cov chords thiab cov tswv cuab hauv lub vev xaib kom ua tau raws li qhov xav tau ntawm lub zog thiab ruaj khov, uas yuav ua rau cov tswv cuab tsis txaus, nce tus kheej qhov hnyav thiab kev lag luam tsis zoo.

 

2. Lub zog tsis sib npaug: Lub dav hlau warehouse yog trapezoidal. Raws li cov qauv kev npaj, lub truss yog qhov nyuaj rau kev hloov mus rau qhov chaw sib faib quab yuam ntawm lub dav hlau trapezoidal, thiab kev ntxhov siab hauv cheeb tsam yuav tshwm sim (tshwj xeeb tshaj yog nyob rau hauv qhov chaw dav dav ntawm kev hloov pauv hauv lub trapezoidal); Nyob rau tib lub sijhawm, cov asymmetric loads uas yuav muaj nyob rau hauv lub logistics warehouse, xws li lub ru tsev stacking loads thiab cov khoom loads, yuav ntxiv aggravate lub tawm ntawm - ntawm - dav hlau quab yuam ntawm lub truss, yuav tsum tau ntxiv kev pab txhawb nqa systems thiab ua rau cov complexity tsim.

 

3. Tsis txaus tag nrho cov tawv nqaij: Qhov nruj ntawm cov qauv truss feem ntau yog nyob ntawm kev sib koom tes ntawm cov tswv cuab hauv lub dav hlau, thiab qhov tawm ntawm - ntawm - lub dav hlau tawv tsis muaj zog. Raws li cua load thiab seismic kev txiav txim (Peru nyob rau hauv ib cheeb tsam seismic, yog li seismic yuav tsum tau xav txog), nws yog ib qho yooj yim los tsim loj deflection thiab kab rov tav txav, cuam tshuam rau kev ruaj ntseg ntawm lub warehouse. Yuav tsum muaj kev txhawb nqa ntxiv rau kev hloov pauv hloov mus rau sab nraud, ua rau kev tsim kho nyuaj thiab nqi.

 

Cov qauv kab sib chaws yog ib qho kev sib txuas ntawm cov pas nrig, tsim los ntawm kev sib txuas ntau tus pas nrig los ntawm cov nodes raws li txoj cai lij choj, ua raws li cov kev cai tsim nyog ntawm Kev Qhia Tshwj Xeeb rau Qhov Chaw Grid Structures JGJ 7-2010. Nws tus cwj pwm quab yuam-kev coj tus cwj pwm yog spatial kev sib koom tes quab yuam, uas yog tsim nyog rau qhov project no ntau dua li cov qauv truss. Kev tsom xam tshwj xeeb yog raws li nram no:

 

1. Ntau qhov tsim nyog quab yuam- daim ntawv kabmob: Cov qauv kab sib chaws yog qhov siab - txiav txim siab tsis raug cai, thiab cov nodes tau suav tias yog hinged. Cov pas nrig feem ntau dais axial nro lossis siab, tsis muaj qhov pom tseeb khoov lub sijhawm thiab lub zog shear. Lub zog tsis sib xws thiab lub zog sib kis txoj hauv kev yog qhov tseeb, uas tuaj yeem muab kev ua si tag nrho rau lub zog tensile thiab compressive zog ntawm cov hlau, txo cov quab yuam ntawm ib tus pas nrig, thiab hloov mus rau qhov yuav tsum tau ua ntawm 23 ~ 24m.

 

2. Strong spatial adaptability: Rau lub dav hlau trapezoidal, daim phiaj layout tuaj yeem ua kom zoo dua qub (kev siv cov duab peb sab pyramid los yog quadrangular pyramid system) kom hloov mus rau qhov kev hloov maj mam ntawm qhov dav ntawm 80.59m mus rau 114.1m, zam kev ntxhov siab hauv zos; Nyob rau tib lub sijhawm, nws lub zog spatial -cov yam ntxwv ntawm cov kabmob ua rau nws tuaj yeem cuam tshuam cov loads asymmetric zoo (xws li lub ru tsev stacking loads thiab cov khoom siv thauj khoom), tsis tas yuav tsum tau ntxiv ntau qhov tawm - ntawm - dav hlau txhawb nqa, thiab cov qauv kev ncaj ncees muaj zog dua.

 

3. Cov tawv nqaij zoo thiab ruaj khov: Cov pas nrig ntawm cov qauv kab sib txuas ua ke los ua ib qho peb -spatial quab yuam-cov kabmob, thiab tag nrho cov tawv tawv yog ntau dua li ntawm cov qauv truss. Nyob rau hauv cov huab cua load thiab seismic kev txiav txim, lub deflection thiab kab rov tav hloov chaw yuav tswj tau nyob rau hauv ntau yam tso cai los ntawm lub specification (raws li cov specification, lub deflection nyob rau hauv lub ru tsev nyob load yuav tsum tsis txhob ntau tshaj 1/250 ntawm qhov ntev); Nyob rau tib lub sijhawm, daim duab peb sab pyramid, raws li qhov tsawg tshaj plaws geometrically invariant chav tsev tsim cov qauv spatial, tuaj yeem txhim kho tag nrho kev ruaj ntseg ntawm cov qauv, tsis tas yuav teeb tsa ib qho kev sib hloov ntawm sab nraud resistant.

 

4. Load adaptability: Ua ke nrog cov yam ntxwv ntawm lub logistics warehouse (ru tsev tuag load, nyob load, plua plav load, thiab cov khoom siv tau), cov qauv kab sib npaug tuaj yeem sib npaug ntawm cov khoom thauj mus rau cov kev txhawb nqa los ntawm kev faib cov kab sib faib loj, tsis txhob muaj kev puas tsuaj los ntawm cov khoom hauv zos ntau dhau; Nyob rau tib lub sijhawm, nws tuaj yeem ua tau raws li cov kev cai seismic fortification, thiab seismic kev txiav txim yog xam los ntawm hom superposition teb spectrum txoj kev los xyuas kom meej kev ruaj ntseg ntawm cov qauv nyob rau hauv seismic tej yam kev mob.

 

 

Ua ke nrog lub trapezoidal loj, ncua sij hawm thiab load yuav tsum tau ntawm qhov project no, daim phiaj qauv txais ib ob - txheej quadrangular pyramid daim phiaj (tsim rau lub dav hlau trapezoidal, nrog cov qauv yooj yim, tsis sib xws quab yuam, thiab yooj yim rau lub Hoobkas ntau lawm thiab ntawm - qhov chaw installation). Lub steel ncej tsim ua raws li lub hauv paus ntsiab lus ntawm "kev nyab xeeb thiab siv tau, kev lag luam thiab kev tsim nyog". Cov txheej txheem tshwj xeeb yog raws li hauv qab no (tag nrho cov ntaub ntawv raug xaiv raws li cov qauv hauv zos Peruvian thiab cov qauv hauv tebchaws, thiab Q355B steel yog nyiam los sib npaug ntawm lub zog thiab kev lag luam):

 

1. Daim phiaj layout: Ib ob - txheej txheej quadrangular pyramid daim phiaj yog saws, nrog ib daim phiaj loj ntawm 2.5m × 2.5m (tsim rau 22m kab sib nrug los xyuas kom meej lub zog ntawm cov pas nrig); tus naj npawb ntawm daim phiaj ntawm qhov nqaim kawg ntawm lub trapezoid (80.59m dav) yog 32 × 76 (dav kev taw qhia × ntev kev taw qhia), thiab tus lej ntawm daim phiaj ntawm qhov dav kawg (114.1m dav) yog 46 × 76. Qhov chaw hloov pauv paub qhov dav gradient los ntawm kev kho lub kaum sab xis kom tsis txhob muaj kev ntxhov siab.

 

2. Daim phiaj qhov siab: Ua ke nrog qhov ntev ntawm 23 ~ 24m, daim phiaj qhov siab yog 2.2m (qhov siab -span piv yog li 1/11, uas ua tau raws li qhov yuav tsum tau ua ntawm "qhov siab-span piv ntawm daim phiaj yuav yog 1/18 ~ 1/10" nyob rau hauv cov specification), kom ntseeg tau lub rooj sib tham qhov siab thiab ruaj khov 15,2m ib.

 

3. Kev them nyiaj yug tsim: Ib daim ntawv sib xyaw ntawm kev txhawb nqa peripheral thiab kev txhawb nqa taw tes yog saws. Kev txhawb nqa yog teem rau ntawm qhov nqaim kawg, dav kawg thiab ob sab ntawm qhov ntev kev taw qhia. Cov kev txhawb nqa yog PTFE zawv zawg kev txhawb nqa (nyob rau hauv txoj kab nrog cov txheej txheem tshiab ntawm cov kev qhia tshwj xeeb), uas tuaj yeem tso tawm qhov kub thiab txias thiab xa cov zog ntsug thiab kab rov tav tib lub sijhawm; cov kev txhawb nqa nodes txais yuav welded hollow sphere nodes los xyuas kom meej kev sib txuas kev ntseeg tau.

 

 

Raws li kev soj ntsuam quab yuam, ntu ntawm tus pas nrig txais cov yeeb nkab steel ncig (symmetrical seem yam ntxwv, tsis sib xws quab yuam, kev ua haujlwm yooj yim thiab kev sib txuas). Qhov ntau thiab tsawg ntawm cov pas nrig hauv qhov sib txawv yog raws li hauv qab no (ua ke nrog cov txiaj ntsig hauv kev suav nrog, ua tau raws li qhov yuav tsum tau muaj zog, nruj thiab ruaj khov):

Upper chord: Dais siab. Raws li lub zog sab hauv, φ168 × 6 (qhov kawg qhov kawg thiab qhov chaw hloov pauv) thiab φ180 × 8 (thaj tsam nrog lub zog loj ntawm qhov dav kawg) cov kav hlau yog xaiv; lub slenderness piv yog tswj nyob rau hauv 150 kom tau raws li qhov yuav tsum tau stability ntawm compression cov tswv cuab.

Lower chord: Dais nro. φ159 × 6 (qis kawg) thiab φ168 × 6 (dav kawg) cov kav hlau yog xaiv; Lub slenderness ratio yog tswj nyob rau hauv 200 kom tau raws li qhov yuav tsum tau nruj nreem ntawm cov tswv cuab, thiab stability check tsis tas yuav tsum tau (tsuas yog yuav tsum tau xyuas lub zog).

Cov tswv cuab hauv lub vev xaib (cov tswv cuab kab pheeb ces kaum thiab cov tswv cuab ntsug): Xa lub zog axial, nrog lub zog me me. φ114 × 4 (feem ntau thaj tsam) thiab φ127 × 5 (qhov chaw hloov pauv nrog lub zog loj) cov kav hlau txuas tau raug xaiv; lub kaum sab xis ntawm cov kab pheeb ces kaum thiab chord yog tswj ntawm 40℃~ 60℃kom ntseeg tau tias kev sib kis tau zoo.

Nodes: Welded hollow sphere nodes raug saws. Lub sphere txoj kab uas hla yog txiav txim raws li tus naj npawb ntawm rods thiab seem loj, thiab φ200 × 8 (general nodes) thiab φ250 × 10 (txhawb nodes nrog loj quab yuam) raug xaiv; steel noj ntawm nodes yog tswj ntawm li 18% ntawm tag nrho cov steel noj ntawm daim phiaj, uas yog nyob rau hauv txoj kab nrog rau cov pa theem ntawm kev lag luam.

 

Ua ke nrog thaj tsam trapezoidal, daim phiaj xwm txheej thiab qhov loj me, xav txog kev siv cov hlau ntawm cov nodes thiab txuas cov khoom siv (bolts, welds) (xws li 10% ntawm tag nrho cov hlau siv), tag nrho cov hlau siv ntawm daim phiaj ntawm txoj haujlwm no yog xam raws li hauv qab no (tsis suav nrog lub hauv paus thiab kab qauv, tsuas yog rau daim phiaj ib feem):

 

Upper chord: Tag nrho ntev yog li 3860m. Qhov hnyav ib meter ntawm φ168 × 6 steel yeeb nkab yog 24.7kg, thiab qhov hnyav ib meter ntawm φ180 × 8 steel yeeb nkab yog 35.8kg, tag nrho txog 102.3t;

 

Lower chord: Tag nrho ntev yog li 3720m. Qhov hnyav ib meter ntawm φ159 × 6 steel yeeb nkab yog 22.6kg, thiab qhov hnyav ib meter ntawm φ168 × 6 steel yeeb nkab yog 24.7kg, tag nrho txog 85.7t;

 

Cov tswv cuab hauv Web: Tag nrho qhov ntev yog li 7980m. Qhov hnyav ib meter ntawm φ114 × 4 steel yeeb nkab yog 10.8kg, thiab qhov hnyav ib meter ntawm φ127 × 5 steel yeeb nkab yog 15.1kg, tag nrho txog 96.2t;

 

Nodes thiab txuas accessories: Tag nrho cov steel noj yog hais txog 28.4t (xws li 10% ntawm tag nrho cov luj ntawm cov saum toj no rods);

 

Tag nrho steel noj ntawm daim phiaj: 102.3 + 85.7 + 96.2 + 28.4=312.6t. Chav tsev steel noj yog kwv yees li 18.2kg / ㎡ (xws li thaj tsam nruab nrab ntawm lub dav hlau trapezoidal), uas yog nyob rau hauv txoj kab nrog cov pa steel siv ntau ntawm ob - txheej kab sib chaws (15 ~ 20kg / ㎡) thiab muaj kev lag luam zoo.

 

 

1. Kev hloov pauv tau zoo dua: Rau qhov nruab nrab - ncua ntawm 23 ~ 24m, cov qauv kab sib chaws tuaj yeem siv tag nrho cov axial quab yuam ntawm cov pas nrig, zam qhov seem loj ntawm cov pas nrig, txo tus kheej - hnyav thiab txuag steel noj, uas yog kev lag luam ntau dua li cov qauv truss.

 

2. Kev ua kom muaj zog spatial: Cov qauv kab sib chaws yog peb -spatial spatial system, uas tuaj yeem hloov kho kom zoo dua rau lub dav hlau trapezoidal ntawm lub tsev khaws khoom, cuam tshuam cov kev ntxhov siab hauv zos, thiab muaj kev hloov tau zoo dua rau cov khoom asymmetric (xws li lub ru tsev stacking loads), tsis tas yuav ntxiv ntau tus qauv ntawm kev txhawb nqa {{2}, txo cov qauv plas - kev tsim kho nyuaj.

 

3. Kev nruj dua thiab ruaj khov: Lub spatial interweaving ntawm rods ua rau cov qauv kab sib chaws muaj kev nruj nruj thiab ruaj khov. Raws li cua load thiab seismic kev txiav txim, qhov deformation me me, uas tuaj yeem ua tau raws li kev nyab xeeb ntawm cov khoom lag luam logistics (tshwj xeeb yog xav txog cov yam ntxwv seismic ntawm Peru), thiab kev nyab xeeb ntawm kev ua haujlwm siab dua.

 

4. Kev tsim kho yooj yim thiab siv sijhawm luv luv: Cov qauv kab sib chaws tuaj yeem ua tiav hauv lub Hoobkas, nrog kev ua haujlwm siab thiab yooj yim ntawm - qhov chaw teeb tsa; cov nodes yog tus qauv, uas yooj yim rau kev sib dhos thiab kev tsim kho, thiab tuaj yeem txo lub sijhawm tsim kho, uas tsim nyog rau kev tsim kho ntawm loj - cov chaw xa khoom loj.

 

5. Zoo durability thiab yooj yim txij nkawm: Lub voj voog steel yeeb nkab seem tsis yooj yim rau cov plua plav thiab dej, thiab muaj kev tiv thaiv corrosion zoo tom qab tiv thaiv- kho corrosion; tus qauv yog qhov yooj yim, tus naj npawb ntawm qhov tsis zoo yog qhov me me, thiab tom qab kev saib xyuas tus nqi qis, uas yog nyob rau hauv txoj kab nrog rau lub sijhawm ntev - lub sijhawm ua haujlwm ntawm kev xa khoom xa khoom.

 

 

1. Tus nqi pib tsim thiab kev ua haujlwm siab dua: Cov qauv kab sib chaws yog cov txheej txheem spatial, tus qauv tsim muaj ntau dua, thiab qhov yuav tsum tau ua ntawm node ua precision yog siab dua; cov welded hollow sphere nodes muaj cov nqi ua ntau dua li cov truss nodes, uas ua rau ntau dua pib tsim thiab ua cov nqi.

 

2. Cov kev xav tau siab dua rau kev tsim kho tshuab: Lub hauv paus ntawm - kev teeb tsa ntawm cov kab sib chaws yuav tsum muaj cov cuab yeej hoisting thiab pab pawg tsim kho, thiab kev teeb tsa ntawm cov nodes thiab rods nruj me ntsis yuav tsum tau ua. Piv nrog rau cov qauv truss, kev tsim kho tshuab qhov pib yog siab dua, thiab kev tsim kho tus nqi yuav nce me ntsis.

 

3. Ntau tus pas nrig thiab cov nodes: Piv nrog rau cov qauv truss, cov qauv kab sib chaws muaj ntau cov pas nrig thiab cov nodes, uas ua rau cov khoom siv thauj mus los thiab ntawm - qhov chaw sib dhos rau qee qhov, tab sis qhov tsis zoo no tuaj yeem cuam tshuam los ntawm lub Hoobkas prefabrication thiab qauv tsim.

 

Ua ke nrog cov yam ntxwv ntawm qhov project (trapezoidal dav hlau, 23 ~ 24m ncua, logistics warehouse load yuav tsum thiab seismic yuav tsum tau nyob rau hauv Peru), cov kab sib chaws yog tsim nyog rau qhov project no ntau tshaj li truss qauv. Txawm hais tias thawj zaug tsim thiab ua tus nqi ntawm cov qauv kab sib chaws siab dua me ntsis, nws muaj cov txiaj ntsig zoo hauv kev hloov pauv hloov pauv, kev ncaj ncees ntawm qhov chaw, nruj thiab ruaj khov, thiab tuaj yeem txo tus nqi txij nkawm tom qab thiab ua kom lub sijhawm ntev -kev nyab xeeb ntawm lub tsev khaws khoom. Los ntawm qhov kev xav ntawm kev lag luam thiab kev nyab xeeb, kev ua kom zoo tshaj plaws ntawm kev hloov ntawm cov qauv truss mus rau kab sib chaws yog tsim nyog thiab ua tau.