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Ch_apter 3

uu F M oo

I

ide building c be ta b vel osd yrs. n pmv m m u all r ces ade ofa rock f nd o f vies nd to os re nd y e e th re nul fo1o ding mtos, nmly the a he spensn ut In genel he t yp. bing, omteon ad ton respcvy. Dsp e hnlgal te onsucion ids rfr, hr inlarly cbinaion t o al bridge conuio

Evon ofdg ly lkd deelopn obding mtl. nill budng malr n stone whi ntr . M o xng an are cnstd f The sajoi o r brdg ul fw so io th "aal ' wdvloed qnc o c ro o , stl, oncr ifoe o ad thn srsd onc. n 19 u nin pl a n lpn of u o irn wru d nul r uu To onee i domin al mil i wa n until lt ino te 9 n) a conrw ud xnsly e onsuon. Du r w a ai elpn i o f prstessncee a 2nd ol Now psss o a b e mo wd s o b osruion see cos.

A

A ies on t copesi srh o eri to sp bee wo sppo e ss ah i pes it bndig f hpe x h o lod. F n, n c n the o o pabla canp a urml dirbd load y cmpreso onl Heer, te oa n a h rie v wth mv of i tly r cmbin t f gd nl:

Beoe t uual ng so ah w nly poid log spa rdTh lg pa o he he gear is opoio o e du to dad oad wch h ach ca be hap preso ol d th m he popn sss h b ce edn

B B

T n o ae bam rides ied y exua g o fl e or igle p o di s h in brds n ac r Bm bd chvd le sigca i e no o aigid Alog ih th delo ot grd 9 ctu h o o b grdr s ao dlopd hoe U cn th u m t grers It w nnt prsessed conc d edale ad lisd conc o b gdr Prssd cnc eos popl bidg conson oy

B g b fa m widl u o bg nuin. Tey ar pjb sma b dg l 15 m ps u 20 bx ge ; nci mc lg pn ve hied i th om conucn T quime n Hong Kog( her p wold) ha g n jn Gn uch pains rr

e onsuion o mal to m rd ov h b p s a h s appp

h g l l gi nd b a avlabl oso M tnon It w hreo a om th pson p obdge mad ily ih crp om opal r nd h h s, dlpt un rdg w o a u h fwruh J 8h cntury

Te j l oe ein bid is xiblhi n l, hape po s a hi ca tsfr he majr lds to the tower and ancoragesby dirct tnsio. The dck is hug fom he cabl by hanger. Thmincale is ualy stfend bya tem ofgirders at deck lv, whc ser provide arodymic sbl .

S bg r o xeona pn h are up r sp in ess f 80 m hee a gy pi o conuion or pensv h a ig Thei u ee lLed to e1 ur aplcon wr bl o pn ag ss

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h supenion brdg cablesyd br idg brdg and als fotbige a onued b-d brg. th dg r, \Vhilc , pil \V !) , i ste Comp irders bu

pn lm of a b-y b t y a he viu sus cbl-d brg is, hwv, in ll measu u t h of hghtrngh f py n h td whh o particulr dg.

A bd bidge on fou ee ent:

(h)

Tw(),

Ppr Tys rg

The most pu f k b d into nfd t dk d n m u as reinfocd s infd pd cnr .

Cr

la p o o

h r ns p to :

b dk hv t whch cray conti for mm d ii p o th Wn d i ld n o lb lb locay n 'h" ug o ml sy o mo d oo h ich sf d he hoig p of h hch vr lode ab s "p wh 1 re e a drc i o h slb.

F pn h on d d i c y pai vd of n nta i vo ; e o s m d h pte.

ck v dsrbd d s c s n "hrop b a ti do iht n. V c e quen n1 n n u wthmnn vo o1 Ih vid xe 0 en oh th ck nidrd o b clulrcntn th ir eaiu

c T p p

A baalb d os o u g nd as h tp b cul . In f a ay pr h slb a nt bm as g t h n o e s l ldd b t l r u o ghug b Balb h dng r b a t h ud f

asb b didd g h b or oh rd "gu bndb" h th bm t "d bl".S bmlab nly hv ba u tr.

P D

ue b ps b pd h pdu dibuin aublp p I re uy h b n sen l

o ont u s n mp c

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T t popur t of bidg dcks in prer onrt or medum nd lo sp :

() T prestsd for pas u to 25 m:

b h prr b fo pn p t 36 mtr

prtr cula for pns 150 mets:

h ro-ton o a ceur or ox r made p o nube n lb d n or hk bs whh tlynlose numbe o ell. e opled trcu o1 nringly u n prrn o blb cs op i x 30 m bae n don h low matl n, o g d g lgiud nd n hyhv gh rnal hc give b blity dsh hit.

Stl Dk

h o populr ype ck

R B - he u pn d by u co z nis b, unl o onvnn o fo span t 8 . Cr i gnaly pdd on t upo. I-b ay

g mpty w a rfr on dc. The o a b hr ono h or h lb n nral p he ba.

(b) Pl l girdes actn mply nc cnc pro n ng 2 o 00 Th poi o roe by h or hi o h lb o rl po ba hr or cint ofrial n plt rd h that o rod b d o th uual don q g -pn, i e dph o lon p nd hk an vr uppo Ho dv n us f mtl s ot b h retr co o aban d proon epor c, O o, hd b copig wh u h eti simplic)' pa rr gor lds low b

B Bx gid ar usd l xsvl ughu t world in wd v w sc aho th 1970's. rqur ondr g d a r o nab gnrn

Sl x grdr r pproprae o n p brs up 200 ba h inhrn nal gi o hbox. Du h ud nsrun uspo nd l yd brid Te de uc ih iore onr l ing opoiy w b or h bo tr pe le op pe or 's u' Gl1y opn p or oon nd he s l sb or lg

Fb sl bx r x ot n ab ndr onrold t ii okd-n re and itoo un g gn r r tr an r b cng f thdy plt d. or bon s s i o atl lo gidr tion t i hhr w b sing HSFG bo In s binaton o w ods b

- h u o h bn dopd or nub o oor n H Kog my be rb a

trglad l o agh

br i h o ctcs oft enodl ll mbr gh

r t at ods j

T dvna big lh d n sp e rqui h p d d on y ir olting or \vlin Ho h dvaa cm n aria d u g r at h pn of ncrs brcton n mntn oss

Th nna u bri o iy cno or u an Trdtnl h b o anina bn te pl g so b. Mm trui tnue nd on t of oh d r d h l grr g b opitor n s. s, ll h r o h g n ndo d h ruc tus pn n re ea

7 M C

h h f h u d yp o sucu ri o uton ns n e odo a iab h matri d ye oudn p Ea pj hud ons on i .

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bridges Hon K ct y n aequat c be constud ay hpig formwk I a k f l m w qui ( ) f hvk.

V w p T m v requid skl w a mt o.

k in Hg K. r t edly valb n on n v mpr .

c , mo xps h

8