Efektifitas Wire Rope Sebagai Perkuatan pada Daerah Momen Negatif Balok Beton Bertulang Tampang T
Abstract: The loss due to
collapsing structure includes not only materialsbutalso take lives. In thecase
of structure function changing that may cause increasing loads, it is required
to put efforts instrengtheningthe structure elements in order to increase the
capacity and hence to avoid the possibility of collapsing. The objective of this
research was to study thebehavior of T-sectional reinforced concrete
beamstrengthenedin the negative momentregionwithwire rope and mortar composite.
The test was carried out to three T-sectional beams: without wire rope
reinforcement (BK), with 2 wire rope reinforcements (BP1), and with 4 wirerope
(BP2) reinforcements. The type of wire rope was Independent Wire Rope Core
(IWRC) with10 mm diameter. The testing method used was two points static
loading with flens positions below (the flens part experienced tensile stress).
Results showed that the maximum load carryingcapacity of BP1 and BP2 specimens
increased by ratios of 1.59 and 2.03 to the BK specimen respectively. However,
the increase was achievedafter the development and propagation of highcracking.
Ductility of BP1 and BP2 specimens decreased by ratios of 0.62 and 0.36 to the
BK specimen respectively. The initial stiffness of BP1 and BP2 increased
byratios of 1.09 and 1.08 to the BK specimen respectively.The effective
stiffness ofBP1 and BP2 specimensdecreased by ratios of 0.88 and 0.92 to the BK
specimenrespectively. Stress occurred in the wire rope based on the analysis
results of Response-2000 and the layer method have not reached 50% ofthe
ultimate stress resulted from the preliminary test. In general, unless
improvement was given to the stiffness characteristics of thewire rope, its
contribution would not become optimum.
Penulis: Yanuar Haryanto
Kode Jurnal: jptindustridd110162