The Seismic Damage Investigation and Phenomenon Analysis of Space Grid Structures in Lushan Ms 7.0 Earthquake

2014 ◽  
Vol 501-504 ◽  
pp. 1535-1541 ◽  
Author(s):  
Jue Hui Xing ◽  
Ming Lu ◽  
Hai Wang Li ◽  
Ya Min Zhao ◽  
Yan Yu
Keyword(s):  
Seismic Design ◽  
Shell Structure ◽  
Historical Earthquakes ◽  
Seismic Damage ◽  
Grid Structure ◽  
Paper Briefly ◽  
Space Grid ◽  
Reticulated Shell Structure ◽  
Ball Joints ◽  
Damage Investigation

People remained optimistic about the safety of the space grid structures, because the seismic damages of space grid structures were quite rare and rather light. However, two space grid structures got damaged in 2013 Lushan Ms 7.0 earthquake. The two structures are the double-layer reticulated shell structure and flatbed grid structure, namely Lushan Gymnasium and Lushan Middle School Gymnasium respectively. This paper briefly reviews the seismic damage phenomena of grid structures in historical earthquakes, and then focuses on the two damaged space grid structures in Lushan earthquake. The reason why the two space grid structures got damaged are derived from the force state analysis of the rods, ball joints and bearings. Finally, we come up with the effective advice for the seismic design and construction of the space grid structure.

Seismic Damage Investigation on Buildings of Qingchuan County in Wenchuan Earthquake

2013 ◽  
Vol 275-277 ◽  
pp. 2803-2806
Author(s):  
Wei Li ◽  
Shan You Li ◽  
Zhen Zhao
Keyword(s):  
Wenchuan Earthquake ◽  
Seismic Design ◽  
Seismic Damage ◽  
Frame Structures ◽  
Reinforced Concrete Frame ◽  
Wood Structures ◽  
Concrete Frame ◽  
Reinforced Concrete Frame Structures ◽  
Bottom Frame ◽  
Damage Investigation

The seismic damage investigation data of 257 buildings in Qingchuan County during Wenchuan earthquake are statistically analyzed. The results indicate that the seismic damages of buildings with seismic design are obviously lower than those of buildings without seismic design, and the damages of the brick-wood structures are most severe, that of the bottom frame structures and masonry structures are second while that of the reinforced concrete frame structures are relatively slight.

Investigation on Seismic Structural Damages in Anchang County in Wenchuan Earthquake

2013 ◽  
Vol 671-674 ◽  
pp. 1351-1355
Author(s):  
Wei Li ◽  
Shan You Li ◽  
Zhen Zhao
Keyword(s):  
Wenchuan Earthquake ◽  
Seismic Design ◽  
Type A ◽  
Seismic Damage ◽  
Average Level ◽  
School Buildings ◽  
Type B ◽  
Type C ◽  
Damage Investigation

The seismic damage investigation on 488 buildings in Anchang County during Wenchuan earthquake was performed and the investigation data were analyzed, especially for the school buildings. The results indicate that the seismic damages of buildings with seismic design are obviously lower than those of buildings without seismic design, and the damages of the Type-A buildings are most severe, those of the Type-B buildings are second while those of the Type-C buildings are the slightest. Moreover, the damages of Type-B and Type-C school buildings are a little higher than the average level of Type-B and C buildings in Anchang County.

Investigation and Analysis on Seismic Damage of Masonry Buildings Subjected to Wenchuan Ms=8.0 Earthquake

2010 ◽  
Vol 452-453 ◽  
pp. 105-108 ◽  
Author(s):  
Hong Fu Chen ◽  
Bai Tao Sun
Keyword(s):  
Seismic Design ◽  
Concrete Slab ◽  
Seismic Damage ◽  
Impact Factors ◽  
Economic Losses ◽  
Masonry Building ◽  
Masonry Buildings ◽  
Seismic Design Code ◽  
The Impact ◽  
Wenchuan Ms 8.0 Earthquake

During Wenchuan Ms 8.0 earthquake, masonry buildings have suffered severely damaged and collapsed, causing heavy casualties and huge economic losses. In this paper, based on seismic site survey data, some new phenomena and characteristics of earthquake damage in comparison with the 1976 Tangshan earthquake, such as seismic damage of large space buildings, inclined or “X” shaped crack in wall between windows or spandrel wall, stair damage, falling of precast reinforced concrete slab and horizontal crack at the bottom of structure, are discussed in detail. Then, the impact factors of seismic capacity of masonry building in Wenchuan earthquake, including construction age, seismic fortification, bay size, floor (roof) form, layer number, thickness of bearing wall are analyzed, respectively; Finally, some recommendations on seismic design and reconstruction of masonry structure by the seismic design code are proposed.

Ultimate Load Analysis of Single-Layer Lattice Shells under Temperature Action

2012 ◽  
Vol 170-173 ◽  
pp. 2592-2596
Author(s):  
Shu Tang Liu ◽  
Qi Liang Long ◽  
Long Wang
Keyword(s):  
Temperature Change ◽  
Shell Structure ◽  
Single Layer ◽  
Cold Season ◽  
Change Impact ◽  
The Stability ◽  
Reticulated Shell Structure ◽  
Temperature Action ◽  
Important Measurement ◽  
Design Construction

Stability is an important measurement index of reticulated shell structure to security and reliability. Considering the temperature change, using structural buckling analysis in ANSYS, the stability of reticulated shell structure was invested. Analysis shows that stability of reticulated shell structure affected by temperature change impact; as the temperature goes down, the safety factor (stability coefficient) continually decrease. The conclusion showed that: 1) reticulated shell construction is suitable in summer; 2) Insulated curing of shell should be paid attention in cold season, and which will be useful on design, construction and use of structure.

scholarly journals Seismic Damage to Gravity Type Quay Wall and Its Seismic Design

1997 ◽  
Vol 13 ◽  
pp. 49-54
Author(s):  
Natsuhiko Otsuka ◽  
Satoru Kurita ◽  
Takahiko Sasajima ◽  
Syuichi Miyabe ◽  
Kinya Miura
Keyword(s):  
Seismic Design ◽  
Seismic Damage ◽  
Quay Wall

Simplified Design Approach for Large-Space Grid Structure Considering Fire Conditions

2011 ◽  
Vol 368-373 ◽  
pp. 1092-1096
Author(s):  
Hai Yong Yang ◽  
Yin Bai ◽  
Yong Jiu Shi ◽  
Yuan Qing Wang
Keyword(s):  
Sandwich Plate ◽  
Design Approach ◽  
Grid Structure ◽  
Maximum Displacement ◽  
Large Space ◽  
Element Analysis ◽  
Analogy Method ◽  
Space Grid ◽  
Mechanical Performances ◽  
Fire Conditions

It is important and necessary to establish fire-resisting design approach for large-space grid structures. In terms of establishing finite element analysis models, main influencing factors on mechanical performances of grid structure under fire conditions were determined. Based on numerical calculation and comparison analysis on ordinary sandwich plate analogy method considering the effect of fire, a simplified design approach named modified sandwich plate analogy method for calculating maximum displacement of grid structures under fire conditions is given. It gives guidance for structural fire-resisting designers.

Reinforcement Technology of Space Grid Structure for Reconstruction of Shandong Qufu Xingtan Theater

2011 ◽  
Vol 243-249 ◽  
pp. 5487-5490
Author(s):  
Lian Fen Weng ◽  
Ming Gong ◽  
Zhen Hua Liu ◽  
Xiao Bei Wang
Keyword(s):  
Bearing Capacity ◽  
Double Layer ◽  
Mechanical Performance ◽  
Slenderness Ratio ◽  
Social Benefit ◽  
Grid Structure ◽  
Construction Period ◽  
Structure System ◽  
Space Grid ◽  
Temporary Structure

Shandong Qufu Xingtan Theater, originally built for an open-air theater, was designed as a one-time temporary structure with bolt ball junction double-layer regular pyramids grid structure roofing system. Because of the transformation of open-air structure system to an enclosed construction, some members of the space grid structure can not meet the required bearing capacity. According to the mechanical performance of space grid structures, the reinforcement methods of “circular steel jacketing” and “lateral support” are conducted, which are based on the analysis of the stress and stability characteristics of different grid members. By using the methods given above, the stress and slenderness ratio is decreased. The results indicate that the two reinforcement methods can reduce the difficulty in construction, shorten the construction period, and gain good economic and social benefit.

Structure Mechanics Analysis with Different Construction Schemes in Large-Span Space Grid Structure

2013 ◽  
Vol 788 ◽  
pp. 534-537 ◽  
Author(s):  
Zhen Xing Li
Keyword(s):  
Great Influence ◽  
Construction Method ◽  
Quality And Safety ◽  
Grid Structure ◽  
Large Span ◽  
Construction Scheme ◽  
Space Grid ◽  
Mechanics Analysis ◽  
Practical Engineering ◽  
Selection Of

Different construction schemes in the same construction method have great influence on structure mechanics of grid structure, which is very important for the security and stability in large-span space grid structure. So in order to guarantee the quality and safety of the structure during construction, the selection of construction scheme is particularly important. In this paper, the following practical engineering is adopted to discuss characteristics of different construction schemes in large-span space grid structure and provide a reference for what construction scheme should be selected in the installation of similar space grid structures.

Sign in / Sign up

Export Citation Format

Share Document