STRUKTUR BETON 1 PERTEMUAN 2 DASAR PERENCANAAN BALOK BETON BERTULANG

Presentasi berjudul: "STRUKTUR BETON 1 PERTEMUAN 2 DASAR PERENCANAAN BALOK BETON BERTULANG"— Transcript presentasi:

1 STRUKTUR BETON 1 PERTEMUAN 2 DASAR PERENCANAAN BALOK BETON BERTULANG
Oleh : Arwan Apriyono PROGRAM STUDI TEKNIK SIPIL JURUSAN TEKNIK FAKULTAS SAINS DAN TEKNIK UNSOED TAHUN 2009

2 Allowable Stress – WSD (ASD)
Actual loads used to determine stress Allowable stress reduced by factor of safety Ultimate Strength – (LRFD) Loads increased depending on type load g Factors: DL=1.4 LL=1.7 WL=1.3 U=1.4DL+1.7LL Strength reduced depending on type force f Factors: flexure=0.9 shear=0.85 column=0.7 Examples: WSD Ultimate Strength University of Michigan, TCAUP Structures II Slide 2/26

3 Item Perencanaan Hal yang perlu diperhatikan pada perencanaan balok beton bertulang : Kombinasi beban yang ada pada struktur Analisis struktur (Menghasilkan Mu dan Vu) Properties Beton dan Baja Tulangan (f’c dan fy) Konsep Perencanaan Balok Beton Bertulang

4 Kombinasi Beban

5 Kombinasi Beban

6 Analisis Struktur ANALISIS STATIS TERTENTU ANALISIS STATIS TAKTENTU DAPAT DIGUNAKAN BANTUAN SOFTWARE: AXIS, ANXIS, SAP, ETAB ETC

7 Strength Measurement Properties Beton Compressive strength
12”x6” cylinder 28 day moist cure Ultimate (failure) strength Both photos Original uploader was Xb-70 at en.wikipedia Released into the public domain (by the author). Photos: Source: Xb-70 (wikipedia) University of Michigan, TCAUP Structures II Slide 7/26

8 Properties Beton

9 Properties Beton

10 Properties Beton

11 Properties Beton

12 Properties Baja

13 KURVA HUBUNGAN TEG-REG BAJA
Properties Baja KURVA HUBUNGAN TEG-REG BAJA

14 Properties Baja UKURAN BAJA TULANGAN

15 Konsep Perencanaan

16 Failure Modes No Reinforcing Reinforcing < balance
Brittle failure Reinforcing < balance Steel yields before concrete fails ductile failure Reinforcing = balance Concrete fails just as steel yields Reinforcing > balance Concrete fails before steel yields Sudden failure Source: Polyparadigm (wikipedia) public domain (Seismic test column displayed outside UCSD's w:structures laboratory. w:Concrete has burst, exposing w:rebar and w:aggregate (composite). {{PD-user-en|Polyparadigm}}) University of Michigan, TCAUP Structures II Slide 16/26

17 Konsep Perencanaan

18 Konsep Perencanaan