摘要:
A modular building block has a first load-bearing surface with a key. There is a recess in the key. The recess has a shoulder disposed therein and side walls extending from the shoulder to a mouth thereof. A reinforcement rod extends into the recess and a coupling for connecting vertically aligned reinforcement rods is disposed in the recess. The reinforcement rod threadedly engages the coupling. A locking plate engages the coupling to prevent the coupling from rotating relative to the locking plate. The locking plate sits on the shoulder and rotation of the locking plate within the recess is prevented by the side walls of the recess.
摘要:
A formwork for constructing an arched structure comprises a first end panel and a second end panel. A plurality of longitudinal members extends between the first end panel and the second end panel. The longitudinal members are arranged in an arced formation and the longitudinal members slope between the first end panel and the second end panel. The formwork may have rollers disposed along lengths of the longitudinal members.
摘要:
A modular building block comprises a first load-bearing surface having a key. There is a recess in the key. The recess has a shoulder disposed therein and side walls extending from the shoulder to a mouth thereof. A reinforcement rod extends into the recess and a coupling for connecting vertically aligned reinforcement rods is disposed in the recess. The reinforcement rod threadedly engages the coupling. A locking plate engages the coupling to prevent the coupling from rotating relative to the locking plate. The locking plate is shaped to sit on the shoulder so that rotation of the locking plate within the recess is prevented by the side walls of the recess.
摘要:
A formwork for constructing an arched structure comprises a first end panel and a second end panel. A plurality of longitudinal members extends between the first end panel and the second end panel. The longitudinal members are arranged in an arced formation and the longitudinal members slope between the first end panel and the second end panel. The formwork may have rollers disposed along lengths of the longitudinal members.
摘要:
A first voussoir for use in an arched structure between second and third voussoirs includes a first end bearing surface with a protrusion which extends from the surface and which is mateable with a corresponding recess in an abutting end bearing surface of the second voussoir. The second end bearing surface includes a recess in the surface which is mateable with a corresponding protrusion in an abutting end bearing surface of the third voussoir. Preferably the protrusions and the recesses have both longitudinal and transverse components of structure. A connector is secured to the first voussoir for connecting one end of an associated tension member to the first voussoir while an opposed end of the tension member is connected to an associated mooring positioned at a distance away from the horizontal span of the arched structure. Arched structures comprising a plurality of such voussoirs may be constructed by successively positioning individual ones of the voussoirs in arching abutment to form a segment of the structure, then positioning a keystone. During construction, individual voussoirs may be moored to associated moorings to avoid the need for underlying shape support. After construction, they may remain moored to impart added stability to the structure.