An experimental and numerical study of reinforced ultra-high performance concrete slabs under blast loads

Numerical Analysis of Prestressed Reinforced Concrete Beam Subjected to Blast Loading

Over the past few years, accompanied by big and frequent earthquakes, more attention was paid to the tunnel earthquake resistance. To reduce tunnel seismic damage and explore the reasonable aseismic measures, the tunnel earthquake disaster investigation was employed to analyze and summarize the tunnel seismic damage on the basis of Wenchuan earthquake. Fifty-two tunnels near the epicenter of Sichuan Province were investigated: Only 7 tunnels did not show structure damage, 6 tunnels suffered the most serious damage, and the rest appeared damage to various extents. It indicates that most serious seismic damage happens to fault fracture zone, followed by entrance and common section of the tunnel. Additionally, the results display that the typical seismic damage of tunnels is lining cracking, collapsing, dislocation, construction joints cracking, and uplifting of invert, and usually lining cracking and collapsing account for a larger proportion. Therefore, the tunnel aseismic design should emphasize the fault fracture zone and tunnel entrance. Tunnel design should adopt the composite lining structure with shock absorber and whole chain alternative grouting to prevent the lining cracking and collapsing in the seismic fortification zone.

Characteristics of seismic disasters and aseismic measures of tunnels in Wenchuan earthquake

Fibre reinforced polymer (FRP) composites have become known for their specific advantages for civil infrastructure construction. High corrosion resistance in particular is one such strength, which has led to successful applications worldwide. This paper focuses on the structural applications of FRP composites as major load-carrying members (therefore strengthening of existing structures is not included) in aggressive environments. It is review and comparatively studied for environmental effects on FRP composites at the structural level mainly about joints and connections, including elevated environmental temperatures, humidity and water immersion, and ultraviolet (UV) exposure. The quantifications of such environmental effects on structural responses further assist development of large scale civil structures made from FRP composites. We therefore also present a few implementations of FRP composites in civil infrastructure construction including i) FRP truss and frame structures in high humility areas, ii) FRP composite bumper systems for bridge piers, iii) floating FRP structures for solar panels, iv) FRP steel composite piles for foundation applications, and v) FRP sheets, planks and piles for modular assembly of a retaining wall. These results are introduced as initiatives from own experiences, with the aim of demonstrating their applicability and providing examples for others with similar needs.

Connections and structural applications of fibre reinforced polymer composites for civil infrastructure in aggressive environments

Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams

A note on the Mohr–Coulomb and Drucker–Prager strength criteria

Calibration of the continuous surface cap model for concrete

An effective numerical simulation methodology to predict the impact response of pre-stressed concrete members

Numerical simulation of impact tests on reinforced concrete beams

Aircraft impact analysis of nuclear safety-related concrete structures: A review

Hua Jiang

Papers

A note on the Mohr–Coulomb and Drucker–Prager strength criteria

Calibration of the continuous surface cap model for concrete

An effective numerical simulation methodology to predict the impact response of pre-stressed concrete members

Numerical simulation of impact tests on reinforced concrete beams

Aircraft impact analysis of nuclear safety-related concrete structures: A review