摘要:
AIM: To insulate the foundations and the rest of the construction from earthquakes. The anti-seismic plates (2) are airtight containers divided into two parts. In part (B) a vacuum is produced so that the longitudinal or primary seismic waves that are spread by means of solids and fluids become cancelled out to a large degree. In part (A), a liquid has been introduced under pressure to cancel out the lines of force from the transversal or secondary waves that are spread by means of solids. It must be highlighted that (F1) is the lateral force of the superficial seismic wave that acts on the plate, producing pressure on the liquid that compresses the footing (1) with a resulting zero. (F2) would be the imbalance of the faces that put pressure on the ground. APPLICATIONS: all types of foundations, large areas to save infrastructures, etc. ALTERNATIVES: conical footings, underground walls, support for beams, etc.
摘要:
Designed to be laid on the ground, immediately below the foundation plate or slab that the building is constructed on, this invention consists of a number of modules on the same plane and adjacent to each other with the sides in contact. Each one of the sides is formed by two identical and rigid parts made of plastic material (2) and (2'), secured by a silemblock (3). A car tyre (5), preferably a used one, is placed between them around the perimeter, forming an elastic deformable chamber, filled with granulated plastic (6) that has a hydraulic effect, in such a way that the vertical and horizontal stresses exerted by a seismic wave are dampened by means of the radial or horizontal deformation of the aforementioned modules (1).
摘要:
A connecting device for use between a first and a second element (10, 20) in a civil engineering construction, where it enables relative movement of the first and second structural elements (10, 20) in the event of slow motion, and at least partially prevents relative movement of the first and second structural elements (10, 20) in the event of rapid motion. The device comprises a cylinder (30) that is stationary relative to the first structural element (10) and defines two chambers (31, 32) containing a fluid material and interconnected via a channel (39). Said cylinder (30) comprises a fixed wall (33) separating said two chambers (31, 32), and each chamber is defined by a movable piston (37, 38) on the opposite side from said wall (33), both of the movable pistons (37, 38) being secured to said second structural element (20).
摘要:
A damping device for use between a first and a second element (10, 20) of a civil engineering construction, where it can at least partially damp relative movement of the first and second structural elements (10, 20) in the event of rapid motion. Said device comprises a cylinder (30) that is stationary relative to the first structural element (10) and defines two chambers (31, 32) containing a fluid material and separated by a wall (33), at least one movable piston (33; 37, 38) being slidable within said stationary cylinder (30). Said wall (33) comprises at least one channel (34) interconnecting the two chambers (31, 32). The device is characterised in that it comprises at least one two-way valve (40) which seals said channel (34) when at rest but opens it to enable high-pressure fluid flow between the chambers when the pressure in one of said chambers (31, 32) increases as a result of rapid movement of the second structural element (20) relative to said first structural element (10), said valve (40) being urged into the closed position by a resilient member (45).
摘要:
A three dimensional guide, which is installed between the ground and a structure and minimizes transmission of vibration of the ground to the structure. The guide is provided with a first curve guide (21) mounted on a base (23), a second curve guide (22) having a moving plane which intersects a moving plane of the first curve guide (21), and an intermediate member (24) which connects the first curve guide (21) and the second curve guide (22) to each other. Each of the first and second curve guides (21, 22) is provided with a track rail (1) having a plurality of rows of rolling body rolling grooves, a bearing block (10) having a plurality of rows of rolling body rolling grooves and no-load rolling body passages, and a multiplicity of balls (9) which bear loads between the rolling body rolling grooves of the track rail (1) and the rolling body rolling grooves of the bearing block (10). Two surfaces of the intermediate member (24) have respectively cylindrical recesses (241, 242) which are opened to permit the bearing block (10) to be rotatably fitted therewith.
摘要:
The invention described is an energy absorbing bearing with a primary application in the seismic isolation of structure from the ground or parts of other structures. It may also be used to dampen other forces on structures on which it is installed. The bearing consists of end plates separated by a laminate of resilient and stiffening layers. In a preferred embodiment there is a plastically deformable insert within the laminate. The laminate interfaces with the end plates in each bearing are secured near the central axis from end plate to end plate, but not near the peripheries. The advantage provided is allowing a wider range of forces to be absorbed than with known bearings of this type. Also described are novel laminae and novel means for securing the laminae and end plates.
摘要:
In a structure for installing a viscous vibration-damping wall 1, the viscous vibration-damping wall 1 is constructed such that a housing 16 with its upper end open is formed by uprightly setting a pair of steel-made side plates 15 on a base plate 8 and by disposing a pair of flange plates 11 on both sides of the pair of side plates, an intermediate plate 13 is inserted in the housing 16, and a viscous material or a viscoelastic material is placed in its gap portion. In order to install the viscous vibration-damping wall 1, a flange of a lower-floor girder 3 is provided with base-plate connecting portions and a pair of flange connecting plates 7, and the base plate 8 and the flange plates 11 are connected thereto, and the intermediate plate 13 is directly connected to a gusset plate 12 fixed to a flange of an upper-floor girder 4. Consequently, the dispersion of the stress is rationalized, and the reduction of constituent members is attained.
摘要:
The invention relates to a system for a combining elastic material with concrete. Contrary to known compounds of this kind, in which the elastic material is combined with ready, hardened concrete by adhesion or similar, in this method the highly polymerized elastic material is combined with fresh concrete which has not yet hardened. The method is characterized in that individual sheets (1) and/or sheet webs (2) of highly polymerized elastic material contain a geometric surface modification consisting of e.g. neps and/or ridges (3) on the side facing the concrete. An adhesive system (4) comprising modified epoxide-, polyester- or polyurethane resin, interspersed with a coarse-grained material like quartz sand (5), is applied on the surface-modified parts before introduction into the unhardened concrete.
摘要:
The present invention relates to a load dissipating and limiting device for protecting, recovering and making civil and industrial works, having a high strength against undesired static, seismic, aeolian and dynamic effects, comprising a plurality of shape memory alloy wires operating under a super-elastic effect and having their end portions interconnected to connecting element for coupling to a construction to be protected.
摘要:
The invention relates to a system for a combining elastic material with concrete. Contrary to known compounds of this kind, in which the elastic material is combined with ready, hardened concrete by adhesion or similar, in this method the highly polymerized elastic material is combined with fresh concrete which has not yet hardened. The method is characterized in that individual sheets (1) and/or sheet webs (2) of highly polymerized elastic material contain a geometric surface modification consisting of e.g. neps and/or ridges (3) on the side facing the concrete. An adhesive system (4) comprising modified epoxide-, polyester- or polyurethane resin, interspersed with a coarse-grained material like quartz sand (5), is applied on the surface-modified parts before introduction into the unhardened concrete.