Research and Analysis about Partical Compression for Individual Anchored Prestressed End Strength

2013 ◽  
Vol 395-396 ◽  
pp. 841-844
Author(s):  
Ping Pang
Keyword(s):  
Reinforced Concrete ◽  
Theoretical Calculation ◽  
Bearing Capacity ◽  
Prestressed Concrete ◽  
Calculation Formula ◽  
Concrete Member ◽  
Concrete Members ◽  
Standard Formula ◽  
Reinforced Concrete Member ◽  
Measured Load

According to the specification given, the theoretical calculation formula of the theoretical value is higher than the measured load values. Specifications given by the bureau of compressive bearing capacity formula is suitable for ordinary reinforced concrete member. For prestressed concrete members, especially scattered end anchorage of prestressed concrete member, the standard formula is not applicable.

scholarly journals STRESS-STRAIN RESPONSE OF REINFORCED CONCRETE MEMBER SUBJECTED TO AXIAL TENSION

2007 ◽  
Vol 13 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Rokas Girdžius ◽  
Gintaris Kaklauskas ◽  
Renata Zamblauskaitė
Keyword(s):  
Reinforced Concrete ◽  
Numerical Test ◽  
Strain Response ◽  
Concrete Member ◽  
Tension Stiffening ◽  
Concrete Members ◽  
Axial Tension ◽  
Reinforced Concrete Member ◽  
Relationship Of ◽  
Concrete Reinforcement

This paper discusses the load and deflection relationship of reinforced concrete members subjected to axial tension. A new tension stiffening relationship depending on tensile strength of concrete, reinforcement ratio, and the ratio of modulus of elesticity of steel and concrete has been proposed. The results obtained were compared with the numerical test data and the formulas proposed by other authors.

Research on Strength Calculation for Local Area under Pressure

2013 ◽  
Vol 395-396 ◽  
pp. 837-840
Author(s):  
Ping Pang
Keyword(s):  
Prestressed Concrete ◽  
Local Area ◽  
Strength Calculation ◽  
Pressure Loading ◽  
Concrete Member ◽  
Local Pressure ◽  
Concrete Members ◽  
Standard Formula

Here individual anchored strength of prestressed end with local area under pressure was studied, the damaged mechanism of local area under pressure was discussed. The ferrule effect of peripheral concrete upon the concrete under local pressure loading is not obvious. For prestressed concrete members, especially scattered end anchorage of prestressed concrete member, the standard formula is not applicable.

Research on Shear Bearing Capacity of Reinforced Concrete Short Beam in Salt-Fog Environment

2012 ◽  
Vol 455-456 ◽  
pp. 1079-1083
Author(s):  
Wei Jun Yang ◽  
Hong Jia Huang ◽  
Wen Yu Jiang ◽  
Yi Bin Peng
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Salt Spray ◽  
Test Chamber ◽  
Shear Capacity ◽  
Salt Spray Test ◽  
Concrete Members ◽  
Short Beam ◽  
Shear Bearing Capacity ◽  
Salt Fog

Shantou atmospheric salt-fog environment is simulated with the comprehensive salt spray test chamber. By using reinforced concrete short beams under different water-cement radio, different corrosion time, the inclined section degradation rules of the corrosive reinforced concrete members are researched for establishing shear capacity of short beam formulas in salt-fog environment.

scholarly journals FLEXURAL CAPACITY OF CONCRETE BEAMS REINFORCED WITH STEEL AND FIBRE‐REINFORCED POLYMER (FRP) BARS

2004 ◽  
Vol 10 (3) ◽  
pp. 209-215
Author(s):  
Hau Yan Leung
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Concrete Members ◽  
Reinforced Polymer ◽  
Beam Design ◽  
Reinforced Concrete Member ◽  
Current Design ◽  
Fibre Reinforced Polymer ◽  
Steel Rebars ◽  
Frp Bars

Although much research on concrete beams reinforced with fibre‐reinforced polymer (FRP) rods has been conducted in recent years, their use still does not receive the attention it deserves from practicising engineers. This is attributed to the fact that FRP is brittle in nature and the collapse of FRP‐reinforced concrete member may be catastrophic. A rational beam design can incorporate a hybrid use of FRP rods and steel rods. Current design codes only deal with steel‐reinforced or FRP‐reinforced concrete members. Therefore in this study some design charts and equations for concrete beam sections reinforced with FRP rods and steel rebars were generated. Results from the theoretical derivations agreed well with experimental data.

Mesoscopic damage evolution on bonding interface and its influence on macroscopic performance deterioration of reinforced concrete member

2019 ◽  
Vol 08 (02) ◽  
pp. 1950005
Author(s):  
Ying Wang ◽  
Yuqian Zheng ◽  
Xuan Wang
Keyword(s):  
Reinforced Concrete ◽  
Bonding Strength ◽  
Element Model ◽  
Bonding Interface ◽  
Interfacial Damage ◽  
Concrete Member ◽  
Steel Bar ◽  
Reinforced Concrete Member ◽  
Bonding Property ◽  
Performance Deterioration

Slip or debonding of bonding interface is the key cause of the performance degradation or failure of the reinforced concrete (RC) member. In this paper, based on Monte Carlo method, a mesoscopic finite element model composed of mortar, coarse aggregate and steel rebar was established to consider the mesoscopic damage on the bonding interface and its influence on macroscopic performance deterioration of RC specimen. The results show that the simulation results fit well with experimental data. Higher initial interfacial damage results in lower bonding strength and smaller final displacement. Higher mortar modulus could greatly improve the initial bonding property and bonding strength, but slightly increase the final damage. Compared with the RC specimen model with plain steel bar, the model with deformed steel bar shows a longer duration of nonlinear increase for drawing force and lower bonding strength. When confinement is applied, the coalescence of damage zones is prevented due to the effect of thread. Therefore, the application of confinement could increase the bonding strength and the initial bonding property.

FLEXURAL DUCTILITY OF STRUCTURAL CONCRETE MEMBERS SUBJECTED TO LIMITED CYCLES OF REPEATED LOADING

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Nazar Oukaili ◽  
Mohammed Khattab
Keyword(s):  
Reinforced Concrete ◽  
Prestressed Concrete ◽  
Concrete Beams ◽  
Constant Load ◽  
Reinforced Concrete Beams ◽  
Repeated Loading ◽  
Structural Concrete ◽  
Concrete Members ◽  
Flexural Ductility ◽  
High Level

For structural concrete members that may expose to serious earthquake, overload or accident impact, the design of ductility must be given the same importance as the flexural strength. The aim of this investigation is to study the change in ductility of structural concrete flexural members during their exposure to limited cycles of repeated loading. Twenty full-scale beam specimens have been fabricated in to two identical groups; each group consisted of ten specimens. The first group was tested under monotonic static loading to failure and regarded as control beams, while the specimens of the second group were subjected to ten cycles of repeated loading with constant load interval, which ranged between 40% and 60% of ultimate load. Specimens in each group were categorized as follows: two traditional reinforced concrete specimens with different intensity of tension reinforcement; three partially prestressed specimens with bonded strands; three partially prestressed specimens with unbonded strands; and two fully prestressed concrete specimens. The main variable, which was considered for all specimens was the partial prestressing ratio (PPR). It was observed that, the ductility of reinforced concrete beams was insignificantly increased during subjecting to limited repeated loading. For fully prestressed and partially prestressed concrete beams with high level of PPR, the ductility was significantly enhanced, while, it was decreased for specimens with small level of PPR.

Research on Adhesive Property of Reinforced Concrete Sructure Strengthened with Near-Surface Mounted FRP Bars

2013 ◽  
Vol 351-352 ◽  
pp. 980-985
Author(s):  
Yong Feng Xu ◽  
Wei Tong Guo ◽  
Teng Fei He
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Concrete Beams ◽  
Ultimate Bearing Capacity ◽  
Adhesive Property ◽  
Calculation Formula ◽  
Near Surface ◽  
Near Surface Mounted ◽  
Frp Bars ◽  
At Home

Now concrete beams reinforced with near surface mounted FRP bars has been researched at home and abroad. This article research the Bearing capacity of concrete beams reinforced with near surface mounted FRP bars by test, and also, Immunobead binding test, infer the calculation formula of ultimate bearing capacity with near surface mounted some bars base on the the single bar.

Sign in / Sign up

Export Citation Format

Share Document