THI CNG TOP BASE

PHN THUYT TRNH MN K THUT THI CNGCH :THI CNG TOP-BASE

GV: Ts. H Duy Khnh

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1.KHI QUT V TOP BASE2.NGUYN L CHU LC CA TOP BASE3.HIU QU CI TO BNG TOP BASE4.PHM VI P DNG HIU QU CA TOP BASE5.CNG NGH THI CNG TOP BASE6.CC BC THI CNG7.NGHIM THU THI CNG8,NHNG U IM CA PP TOP BASE9.CC IM CN CH

NHNG NI DUNG CHNH

- Cu toTOP BASEbao gm cc khi b tng dng con quay thng ng (gi l top block), chn vt liu ri (s dng dm) gia cc con quay.- TOP BASEc dng nh hnh v l loi c s dng ph bin hin nay trong gia c nn cng trnh xy dng. TOP BASE hay cn gi l mng phu.

1.KHI QUT V TOP BASE

- Phng php ny lin quan n vic b tr nhng Top block xung di b mt mng v cc thanh thp c t ln trn, lin kt trc tip cc Top block ny li vi nhau to thnh lpTOP BASE.Khng gian bn trong khi TOP BASEc ph y bng dm chn.

1.KHI QUT V TOP BASE

Hin nay trn thc t thng s dng loi top-block loai 33cm v 50cm x l nn t yu di y mng cng trnh.

1.KHI QUT V TOP BASE

-Phng php Top-Base vi c im khc bit so vi cc phng php khc trong ci to nn t yu ch tn dng c qu trnh truyn ng sut trong b tng thng qua cc khi Top-Block. -Phn tr nn ca Top-block c t trong lp vt liu ri rc ( dm) nm trn nn t yu, phn cc ca Top-block cng c t trong phn a tng tng t, v phn ct thp pha trn v pha di c tc dng ni cc Top-block thnh nhm; v vy phng php mng Top-base tr thnh h kt cu mng cng linh hot. 2.NGUYN L CHU LC CA TOP BASE

-Bn cnh , gc gia phn tr nn ca Top-block v phnt (vt liu ri rc ) tip xc l 45 , hnh dng tng t nh bnh xch ca xe i t.

2.NGUYN L CHU LC CA TOP BASE

2.NGUYN L CHU LC CA TOP BASE Cu to ny cho php phn tch ti trng thng ng tc dng ln Top-base c chia thnh 2 thnh phn: ng sut thng ng (PV) v ng sut theo phng ngang (PH). iu ny dn n bin dng ngang b ngn cn bi lc khng ca lp vt liu ri rc v phn cc. Nh hnh:

- ln mngTOP BASE gim 35% - 65% so vi mng bn b tng ct thp.- Kh nng chu ti ca nn TOP BASE gp 2 3 ln so vi nn t nhin.- Ln u. Chu ti trng ng t rt tt.

3.HIU QU CI TO BNG TOP BASE

- Phn b u ng sut trong nn- Tp trung ng sut gn y mng- Khc phc c ch ph hoi do trt cc b thnh ph hoi do trt su.

3.HIU QU CI TO BNG TOP BASE

- Nh ph n 5 tng trn nn t yu trong khu vc xy chen.- Gia c nn nh xng, nn bi.- Lm mng ct hng ro, mng ng ng cng ngh.- Lm mng cho b cha cht lng, b x l nc thi.- Nn ng ni b cc khu cng nghip, khu ch xut.

4.PHM VI P DNG HIU QU CA TOP BASE

Mt s cng trnh tiu biu :Trn th gii: (Nht Bn ,Hn Quc)

4.PHM VI P DNG HIU QU CA TOP BASE

Vit Nam:

4.PHM VI P DNG HIU QU CA TOP BASE

Cng nghTOP BASEvn c coi l bc t ph v cng ngh xy dng c hon thin v p dng thnh cng trn nn t yu cho hng vn cng trnh hn 10 nm qua Nht Bn v Hn Quc.- C 2 phng php thi cng TOP BASE:a. Top-block c sn (cng ngh Nht bn)+ Sp xp cc top-block ln nn t.+ Chn dm gia cc khi.5.CNG NGH THI CNG TOP BASE

b. Top-block ti ch (cng ngh Hn quc) + Sp xp cc khun c ch to sn. + b tng vo khun. + Chn dm gia cc khi.

5.CNG NGH THI CNG TOP BASE

Mt trong nhng u im khin Top base tr thnh cng ngh xy dng mic a chung, l tnh tin li trong thi cng. Phng php xy dng bng cngngh ny kh n gin.5.CNG NGH THI CNG TOP BASE

Ngoi ra, ngi ta cn c th rt ngn thi gian bng cch s dng nhng khiphu c c sn ti xng. Khi mang n cng trnh, sp xp nhng khi nyln nn t v chn dm. Nu thi cng bng phng php ny s tn nhiu chi phhn so vi cch thi cng ngay ti cng trng.

Tuy nhin ty theo iu kin c th ca tng cng trnh m ta c th la chn phng php thi cng cho ph hp.

5.CNG NGH THI CNG TOP BASE

Bc 1. Cng tc o t: t s c o n su thit k, nu h o su trn 1m phi d kin bin php bo v thnh h o v thot nc h o bo m iu kin thi cng.

Trng hp y h o trn mc nc ngm (khng b ngp nc) v l lp t ri rc, cn tin hnh lm m v m nn lm cht lp t y h mng.

6.CC BC THI CNG

o cc h mng t Top-base

6.CC BC THI CNG

Bc 2. Cng tc lp t Top-block Khi lp t cc khi Top-block cn phi iu chnh cao ca cc mc thp gn trn phu b tng sao cho bng nhau. Li ct thp nh v cho trng hp s dng Top-block l li thp thanh c khong cch 500 x 500mm vi ng knh thanh thp 10mm. 6.CC BC THI CNG

6.CC BC THI CNG

Lun cc thanh thp di lin kt cc Top-block thnh khi

Phn thng ng c dng cc ca Top-block (chn phu) phi c chn hoc ng vo nn t theo phng thng ng vo c hnh tam gic trn li thp nh v (nu dng Top-block c sn). Khi s dng Top-base theo phng php c btng ti ch trong cc phu nha s nh v cc phu nha bng cch lun cc thanh thp 10 qua l khoan sn ni tip gip gia phn cc v phn cn ca phu nha6.CC BC THI CNG

6.CC BC THI CNG

Lp t cc khi Top-block sau khi lin kt vo cc h o

Bc 3. btng ti ch Hin nay thng dng Top-base vi phng php btng ti ch trong cc phu nha hn l lp dng cc khi Top-block bng btng c sn do cc u im v s linh hot v thun tin trong thi cng, khng b ph thuc thit b c gii, v kh nng hn ch tai nn lao ng. V cng , btng trong phu nha ch cn mac R= 100 kg/cm2, nu khi lng thi cng nh c th trn b tng bng my trn mini theo cp phi t mc b tng ny. Khi khi lng thi cng Top-base ln, vic vn chuyn b tng sau trn n ch vo phu rt tn nhn cng, nng sut thp, nu khng c cu phc v. Tin thu cu phc v b tng s t hn so vi dng my bm btng.

6.CC BC THI CNG

bm c b tng vo phu nha cn s dng btng mc 200. Vy trng hp ny s dng mc b tng 200 vo phu l do yu cu cng ngh bm b tng, l yu cu ca bin php thi cng, khng phi do yu cu chu lc ca Top-base. m cht btng trong phu nha c th s dng m rung nu l btng trn my c st thp, hoc ch m bng xng rt n gin nu s dng btng bm c st ln.

6.CC BC THI CNG

6.CC BC THI CNG

b tng cc khi Top-block

Bc 4. Chn dm Tin hnh chn v m dm (kch thc 1-2cm) lp y khong trng gia cc khi b tng hnh phu sau khi c btng t nht 24 gi. m rung dm chui vo khong trng gia cc khi phu l khu quyt nh cht lng kt cu top base, y l cng on quan trng nht trong phng php thi cng mng Top-baseTrc ht, y dm trn mt cc khi Top-block ri dng xng gt dm chn dn lp y vo cc khe trng gia cc phu b tng trong lc ng thi tin hnh m rung.

6.CC BC THI CNG

Vi khi lng Top-base ln ch yu dng phng php m rung vi loi m di c ng c ( dng trong m btng ). Cn phi tin hnh cng tc m rung m bo c c mt kt cu nn mng vng chc c cht ca dm l ti a.6.CC BC THI CNGCng tc m dm c th thc hin bng cch dng cc thp, thanh thp chc th cng nu khi lng Top-base nh

6.CC BC THI CNG

Chn dm v tin hnh m cht .

Bc 5. Lin kt kho nh cc khi phu t cc thanh ct thp 12 trn nh khi Top-base to thnh li thp lin kt, khi btng mng, hoc lp b tng kho nh khi phu xong, cc li thp ny cng vi kt cu b tng c tc dng kho cht nh cc khi Top-block, bt chng chu lc ng thi, theo ng s tnh ton. 6.CC BC THI CNG

6.CC BC THI CNG

lp b tng lt bo v thp lp trn Top-base Lin kt kha nh bng cc thanh thp trn

6.CC BC THI CNG

- Khng c h hi, nt v v.v, trn cc Top-block b tng. - Cao lp t v v tr ca cc phu b tng phi tun theo ng vi cc bn v thit k. - Khi lp t cc Top-block b tng, phi m bo bng phng v xoa nhn b mt b. + Chiu su vt chn cn st li cho php trong khi b tng c ti cng trng l bng chiu cao phn vnh ca Top-block b tng.

7.NGHIM THU THI CNG

+ lch phng cho php ca b mt b tng trong cc Top-block b tng l 5%. - Vic chn v m dm phi bo m c chc, do vy qu trnh gim st phi c tin hnh nh di y: + Vic chn y v m rung dm c cho l t yu cu khi khng xut hin ln st dm chn khi c va p mnh vi li thp hoc trc tip trn mt dm v.v + Sau khi xc nhn rng vic chn dm v m rung l t yu cu, phi m bo rng b mt bn trn ca lp dm chn gia cc phu Top-base l hon ton ngang bng vi b mt cc phu b tng.

7.NGHIM THU THI CNG

1.u im v gi thnh:- Mt trong nhng tiu ch quan trng ca vic p dng mt cng ngh xydng mi, l rt ngn chi ph v thi gian thi cng. Vcng ngh Topbase chnh l phng n nh vy. Theo thng k, p dng phng php nyc th gip rt ngn mt na thi gian thi cng v gim c 60% n 70%chi ph so vi cc phng n gia cng mng khc.

8.NHNG U IM CA PP TOP BASE

8.NHNG U IM CA PP TOP BASE

Cng trnh: Trng cao ng ngh cng ngh Licogi giai on 1 Hng mc: KT CU MNG

2.u im v cht lng:- Top base gip gim ln, lm t tr nn chc chn, tng kh nng titrng, m bo tnh an ton cho cng trnh- Thi cng tin li v linh hot, v vy c th gim thiu ting n, bi v nhngnh hng xu ca vic thi cng cng trnh.- C kh nng thi cng ni cht hp ngay c trong cng trnh xy dng.- Thi cng tin li khng cn thit b c bit- Rt thn thin vi mi trng- C th thi cng c c nhng ni c din tch cht hp, thm ch ngay ctrong cng trnh xy dng.

8.NHNG U IM CA PP TOP BASE

8.NHNG U IM CA PP TOP BASE

Kh nng chu ti v ln ca cc loi Mng

- Cc lu trong qu trnh thit k: Khi thit k 1 lp Top-base m cha p ng yu cu do ti trng thit k qu ln c th thit k Top-base 2 lp hoc m rng din tch b tr Top-base. Khi p dng phng php m rng din tch thi cng, ch c th t cc phu b tng nh ln hn 1 na chiu cao ca phu so vi y mng, lp mng b tng pha trn ln pha trn ca lp phu Top-base do vy ti trng c th c phn b u trn cc phu b tng v.v

9.CC IM CN CH

- Cc lu trong qu trnh thi cng xy dng : Khi thi cng Top-base nn t c bn th sau khi o vt n ct t Top-base phi ri lp vi a di b mt y nhm gi sch b mt trong sut qu trnh thi cng . Cn nhng nn t cng th phi m cht v phng b mt ti ct t Top-base

9.CC IM CN CH

NHM 1 CAO TRNG 12149324HONG XUN TRNG 12149150NGUYN S PHC H 12149030DNG NH DUY CHNG 12149195NGUYN ANH KIT 12149059NGUYN T THANH 12149118

CM N CC BN CH LNG NGHE