A Residential Building Crack Test and Construction Safety Assessment

Abstract:

A residential building, a brick/concrete structure built up in 1990s was used for many years. Since a deep foundation pit construction was being done in the north, the residents were worrying about the cracks in the building and its safety. Therefore, the following works were done such as the spot checks of the building engineering quality were done; the test and analysis were carried out over the cracks development after the foundation pit was backfilled, the influence assessment of the foundation construction under the mutual effects of pilings and anchor rods over the residential building structure was also conducted; finally the recheck calculation and safety evaluation were made over the building structure. The result shows that the foundation digging leads to new cracks on the nearby residential building but does not endanger its structural safety; after the foundation was backfilled, the hidden danger on the building’s northern side slop was eliminated and the structure cracks tend to be stable; the complete engineering structure is safe and in conformity with the requirements of safety and anti-vibration during the construction period, however, the multiple-pore slabs’ piecing affects the structural integrity and vibration proof performance.

• Periodical: Applied Mechanics and Materials (Volume 188)
• Pages: 119-122
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.188.119
• Online since: June 2012
• Authors: Ju Gang Luo, Jin Yang Zhang, Qing Song Zhang
• Keywords: Crack, Foundation Pit Construction, Side Slope Stability Crack Supervision, Test Safety

References

[1] JGJ 120-99, Technical Criterion of Constructional Founcation Pits Supporting [S]. Beijing: China Architecture and Building Press, (1999).

[2] GB 50007-2002, Design Criterion of Constructional Foundation Base[S]. Beijing: China Architecture and Building Press, (2002).

[3] Ge Xiaochun, the Calculation of Variable Spring Constant and Variable Cross-Section Bream on Winkle Medium [J]. Dynamics and Practice. 1987 (S1): 59~65.

[4] GB 50086-2001, Anchor Gunite Supporting Technical Criterion [S]. Beijing: China Architecture and Building Press, (2001).

[5] GB 50010-2002, Concrete Structure Design Criterion [S]. Beijing: China Architecture and Building Press, (2002).

[6] Sun Jun, Hou Xueyuan, Underground Structure [M]. Beijing: China Science and Technology Press, (1998).