Research Articles | Challenge Journal of Structural Mechanics

Seismic analysis of interlocking mortarless hollow block

Farzad Hejazi, Jamalodin Noorzaei, Abang Abdullah Abang Ali, Mohd Saleh Jaafar



Various types of interlocking mortarless (dry-stacked) block masonry systems have been developed worldwide. However, the characteristics of dry joints under compressive load, and their effect on the overall behavior of the interlocking mortarless system, are still not well understood. This paper presents an investigation into the dry-joint contact behavior of masonry and the behavior of interlocking mortarless hollow blocks wall construction subjected to seismic excitation. In the system developed, the blocks are stacked on one another and three-dimensional interlocking protrusions are provided in the blocks to integrate the blocks into walls. The response of the mortarless hollow block wall with respect to acceleration displacement and stress have been discussed.


masonry systems; seismic analysis; mortarless block; interlocking block; finite element method

Full Text:



Ali SS, Page AW (1988). Finite element model for masonry subjected to concentrated loads. ASCE's Journal of Structural Engineering, 114(8), 1761-1784.

Alpa G, Gambarotta L, Monetto I (1998). Dry block assembly continuum modelling for the in-plane analysis of shear walls. Proceeding of the 4th International Symposium on Computer Methods in Structural Masonry, E & FN, Spon, 111-118.

Alwathaf AH, Thanoon WAM, Noorzaei J, Jaafar MS, Abdulkadir MR (2003). Analytical models for different masonry systems. Critical Review, Proceeding of IBS2003 Conference.

Cerioni R, Doinda G (1994). A finite element model for the nonlinear analysis of reinforced and prestressed masonry wall. Computer and Structures, 53, 1291-1306.

Lotfi H, Shing P (1991). An appraisal of smeared crack model for masonry shear wall analysis. Computer and Structures, 41, 413-425.

Oh K (1994). Development and Investigation of Failure Mechanism of Interlocking Mortarless Block Masonry System. Ph.D. thesis, Drexel University, Philadelphia.

Riddington JR, Noam NF (1994). Finite element prediction of masonry compressive strength. Computer and Structures, 52(1), 113-119.

Suwalski P, Drysdale R (1986). Influence of slenderness on the capacity of concrete block walls. Proceeding of 4th Canadian Masonry Symposium, 122-135.

Zhuge Y, Thambiratnam D, Coreroy J (1998). Nonlinear dynamic analysis of unreinforced masonry. ASCE's Journal of Structural Engineering, 124(3), 270–277.


  • There are currently no refbacks.