Abstract:
The present invention relates to a buckling restrained brace capable of absorbing vibration energy produced by an earthquake, wind power and the like, in a building and a steel structure. The buckling restrained brace of the present invention is accomplished by a buckling restrained brace 1 wherein a steel-made center axial member 3 is passed through a buckling-constraining concrete member 2 reinforced with a steel member 6, and an adhesion-preventive film 4 is provided to the interface between the steel-made center axial member and buckling-constraining concrete 5, the adhesion-preventive film showing a secant modulus in the thickness direction of at least 0.1 N/mm2 between a point which shows a compressive strain of 0% and a point which shows a compressive strain of 50%, and up to 21,000 N/mm2 between a point which shows a compressive strain of 50% and a point which shows a compressive strain of 75%, and having a thickness dt in the plate thickness direction of the steel-made center axial member and a thickness dw in the plate width direction thereof from at least 0.5 to 10% of the plate thickness t and from at least 0.5 to 10% of the plate width w, respectively, and by the application of the buckling restrained brace to a damping steel structure.
Abstract:
The present invention relates to a buckling restrained brace capable of absorbing vibration energy produced by an earthquake, wind power and the like, in a building and a steel structure. The buckling restrained brace of the present invention is accomplished by a buckling restrained brace 1 wherein a steel-made center axial member 3 is passed through a buckling-constraining concrete member 2 reinforced with a steel member 6, and an adhesion-preventive film 4 is provided to the interface between the steel-made center axial member and buckling-constraining concrete 5, the adhesion-preventive film showing a secant modulus in the thickness direction of at least 0.1 N/mm2 between a point which shows a compressive strain of 0% and a point which shows a compressive strain of 50%, and up to 21,000 N/mm2 between a point which shows a compressive strain of 50% and a point which shows a compressive strain of 75%, and having a thickness dt in the plate thickness direction of the steel-made center axial member and a thickness dw in the plate width direction thereof from at least 0.5 to 10% of the plate thickness t and from at least 0.5 to 10% of the plate width w, respectively, and by the application of the buckling restrained brace to a damping steel structure.
Abstract translation:本发明涉及一种能够吸收由建筑物和钢结构中的地震,风力等产生的振动能量的屈曲约束支架。本发明的屈曲约束支架由屈曲约束支架1实现,其中, 钢制中心轴构件3通过钢构件6加强的屈曲约束混凝土构件2,并且在钢制中心轴构件和屈曲约束混凝土之间的界面处设置防粘接膜4 如图5所示,在显示压缩应变为0%的点和显示压缩应变为50%的点之间,在厚度方向上示出切割模量为至少0.1N / mm 2的防粘附膜, 在压缩应变为50%的点和显示75%的压缩应变的点之间的21,000N / mm 2,并且具有钢制成的板的厚度方向的厚度dt 并且板宽度方向上的厚度dw分别为板厚度t的至少0.5至10%和板宽度w的至少0.5至10%,并且通过施加屈曲约束支架 到阻尼钢结构。
Abstract:
Emitters of a first NPN transistor and a second NPN transistor forming a differential input section are respectively connected to collectors of a third NPN transistor and a fourth NPN transistor; the collectors and bases of the third NPN transistor and the fourth NPN transistor are respectively connected through first and second capacitors; and the bases of the third NPN transistor and the fourth NPN transistor are respectively connected to a first reference power source through first and second resistors.
Abstract:
The present invention relates to aminoarylsulfonic acid-phenol-formaldehyde condensate and concrete admixture comprising the same for incorporation in cementing compositions, for example, mortar, cement paste and the like, for improving slumping characteristics.
Abstract:
A planar heating element having a thin flat body formed from an insulating thermoplastic resin and electrically conductive powder. The electrically conductive powder is formed in a layer within the thermoplastic resin in the neighborhood of the entire surface of the body. Lead wires within the flat body being positioned near the surface of the body such that the lead wires are electrically connected to said layer of electrically conductive powder. The planar heating element being produced by a method comprising melt-admixing an insulating thermoplastic resin with an electrically conductive powder. The mixture is then extruded, and the extruded body is rapidly cooled.
Abstract:
The present invention is related to a method for producing a planar heating element. The method comprises melt-admixing an insulating thermoplastic resin with an electrically conductive powder. The mixture is then extruded, and the extruded body is rapidly cooled.
Abstract:
The compact coin hopper for holding and dispensing coins in bulk includes a rotable disk for releasing individual coins to a sliding base beneath the rotable disk for ejection from the coin hopper. The upper surface of the rotable disk includes an upper step part and a lower step part connected by a riser part. The upper step part has a crescent arc shape with a radii smaller than the radius of the rotating disk in a planar view. One end of the crescent arc shape terminates adjacent an edge of the through hole while the other end of the crescent arc shape diverges away from the through hole and terminates adjacent a peripheral side edge of the lower step part. The configuration of the upper and lower step parts and the riser part assist in dispensing a coin.
Abstract:
One embodiment of the invention includes a preamplifier system for a magnetic disk-drive. The system includes a current distributor configured to generate a reference current and to decay the reference current from a first magnitude to a second magnitude during a degauss period to degauss a magnetic disk write head. The degauss period defines a transition from a write cycle to a read cycle of the magnetic disk-drive and has a predetermined time duration that is independent of the first magnitude of the reference current during the write cycle. An output driver is configured to provide a write current to the magnetic disk write head having a magnitude with an absolute value that is based on the reference current.
Abstract:
The present invention provides a current-sense bias circuit for use with a magnetoresistive head. In one embodiment, the current-sense bias circuit includes a voltage biasing portion configured to provide a bias voltage across the magnetoresistive head thereby establishing a bias current through the magnetoresistive head. Additionally, the current-sense bias circuit also includes a current sensing portion coupled to the voltage biasing portion and configured to sense a change in the bias current based on a resistivity change of the magnetoresistive head.