Shear characteristics of horizontal expansion joints in the Toktogul hydroelectric station dam

1974 ◽  
Vol 8 (5) ◽  
pp. 401-403 ◽  
Author(s):  
V. B. Sudakov ◽  
A. E. Minarskii ◽  
V. I. Pashchenko ◽  
S. K. Vasilevskaya
Keyword(s):  
Hydroelectric Station ◽  
Expansion Joints ◽  
Shear Characteristics ◽  
Horizontal Expansion

scholarly journals INVESTIGATION OF METHODS FOR REPAIRING THE BRICK FACING LAYER OF MULTILAYER WALLS

2019 ◽  
Vol 7 (2) ◽  
pp. 57-61
Author(s):  
Юлия Избицкая ◽  
Yuliya Izbitskaya ◽  
Светлана Калошина ◽  
Svetlana Kaloshina
Keyword(s):  
Expansion Joints ◽  
Factors Affecting ◽  
Cementitious Matrix ◽  
Direct Repair ◽  
Horizontal Expansion ◽  
The Right

This article discusses the methods of repairing the brick facing layer of multilayer walls: repair and restoration of vertical and horizontal expansion joints; use when strengthening repair connections and anchor connections; injection and re-inforcement of cracks; Fibre Reinforced Cementitious Matrix and direct repair of brickwork. The conclusion is made about the importance of choosing the right method of repair and the factors affecting it.

scholarly journals THE ANALYSIS OF DEFECTS AND REPAIR METHODS OF THE FRONT LAYER OF BRICKWORK OF MULTILAYER WALLS ON THE EXAMPLE OF A RESIDENTIAL BUILDING IN PERM

2019 ◽  
Vol 10 (2) ◽  
pp. 40-50
Author(s):  
Y. S Izbitskaya ◽  
S. V Kaloshina ◽  
D. G Zolotozubov
Keyword(s):  
Thermal Characteristics ◽  
Residential Building ◽  
Longitudinal Reinforcement ◽  
Expansion Joints ◽  
Face Layer ◽  
Cladding Layer ◽  
Aesthetic Appearance ◽  
The Face ◽  
Horizontal Expansion ◽  
The Aesthetic

The article discusses the problem of defects in the front layer of brickwork of multilayer walls. At many facilities constructed using the technology of laminated masonry with brick facing, after several years of operation, defects such as vertical cracks in the masonry face layer and destruction of the bricks of the face layer begin to appear. These defects violate the aesthetic appearance of the building, reduce the thermal characteristics of the external walls, and, in some cases, can lead to the collapse of certain sections of the brick cladding layer. This problem is considered on the example of a 10-storey residential building with external multilayer walls, located in Perm. The building was commissioned in 2005, but already in 2010, many defects of the front layer of masonry were discovered. The article provides data obtained during surveys carried out in 2010 and 2019. The main defects of the external masonry verst are described, among which one can distinguish the destruction of the masonry face layer, vertical cracks, the absence of stitching along the supporting corner of the masonry, and the absence of expansion joints. The main causes of damage are associated with numerous deviations from the project. The results of calculating the outer verst of brickwork for eccentric compression are presented. As measures aimed at eliminating defects, the article describes possible methods of repairing the face masonry: the installation of vertical and horizontal expansion joints, longitudinal reinforcement and anchoring with BIT rods to prevent the development of vertical cracks and destruction of the masonry.

CRUCIBLE 321

Alloy Digest ◽  
1983 ◽  
Vol 32 (5) ◽  
Keyword(s):  
Fracture Toughness ◽  
Aircraft Engine ◽  
Heat Treating ◽  
Nickel Steel ◽  
Annealed Condition ◽  
Engine Exhaust ◽  
Expansion Joints ◽  
Temperature Performance ◽  
Cold Worked ◽  
Specialty Metals

Abstract CRUCIBLE 321 is a non-hardenable austenitic chromium-nickel steel which is particularly adaptable for parts fabricated by welding without postweld annealing for use at temperatures between 800 and 1500 F. This grade is non-magnetic in the annealed condition but is slightly magnetic when cold worked. Among its many applications are aircraft-engine exhaust manifolds, furnace parts and expansion joints. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-426. Producer or source: Crucible Specialty Metals Division, Colt Industries.

Modular Bridge Expansion Joints for Lacey V. Murrow Floating Bridge

1997 ◽  
Vol 1594 (1) ◽  
pp. 163-171 ◽  
Author(s):  
John A. Van Lund ◽  
Mark R. Kaczinski ◽  
Robert J. Dexter
Keyword(s):  
Fatigue Strength ◽  
Fatigue Cracking ◽  
Field Measurements ◽  
The United States ◽  
Limit States ◽  
Expansion Joints ◽  
Lake Washington ◽  
Floating Bridge ◽  
Modular Bridge Expansion Joints ◽  
Washington State Department

The Lacey V. Murrow Bridge (LVM Bridge) is a 2013-m-long floating bridge on Interstate 90 across Lake Washington in Seattle, Washington. Single-support-bar, swivel-joist modular bridge expansion joint systems are located at each end of the bridge between the shore approach spans and the floating pontoons. These joints were designed for 960 mm of longitudinal movement as well as horizontal and vertical rotations caused by wind, wave, temperature, and changes in lake level elevation. A similar joint in an adjacent floating bridge had experienced premature fatigue cracking at welded attachment details because of low fatigue strength. For the LVM Bridge the joint components were fatigue tested and designed by using fatigue limit-states loads, resulting in welded attachment details with improved fatigue strength. In addition, a stiffer center beam and reduced center-beam span lengths produced lower fatigue stress ranges. Joint movements and rotations, fatigue design methodology, results of dynamic analyses, field measurements of the dynamic response, and construction details are described. The total cost of the LVM joints was 1 percent of the final bridge cost. The Washington State Department of Transportation required a 5-year guarantee for the LVM joints. These are the largest modular bridge expansion joints in the United States to be tested and designed for fatigue.

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