33 results about "Masonry arch" patented technology

A removable arch form assembly for use in forming a masonry arch of a plurality of masonry elements on a substructure comprises a flexible arch form having a substantially rectangular shape, first and second end clips engaging an arched structure about which the masonry arch is to be formed, at least one intermediate clip positioned on the arched structure between the end clips and at an elevation differing from the end clips, the end clips and the at least one intermediate clip removably receiving the flexible arch form and retaining the form in an arched orientation.

The invention discloses a masonry arch bridge using lightweight concrete as arch filler. The masonry arch bridge comprises a main arch ring (1), a spandrel arch (3) and an arch filler layer (2) and is characterized in that the arch filler layer (2) is a lightweight concrete filler layer, and the apparent density of the lightweight concrete filler layer is 800kg / m<3>-1950kg / m<3>; a leveling layer (4) is arranged on the top surface of the arch filler layer (2); a waterproof layer (7) is arranged between the main arch ring (1) and the arch filler layer (2); and saw joints (5) are arranged along the transverse direction of the bridge; and water permeating pipes (6) are arranged in the lowest position of each filler formed by the pairwise saw joints (5) and at two sides of a side wall. The waterproof layer (7) is formed by laying a permanent condensate or asphalt. The masonry arch bridge has the advantages that the stress of the arch can be effectively improved, the internal force of a dead load is reduced, and the carrying capacity of a bearing live load of the masonry arch bridge is increased.

The invention relates to an arch mould for lining masonry for a pipeline tee joint of an industrial furnace, and a masonry construction method for a tee joint. The arch mould comprises a left-petal arch mould, a right-petal arch mould, middle arch moulds and an arch mould support frame, wherein the left-petal arch mould and the right-petal arch mould are the same in structure and oppositely arranged; the bottoms of the left-petal arch mould and the right-petal arch mould are fixedly connected through a transversal connection plate; and the middle arch moulds are placed on middle arch mould rails of the left-petal arch mould and the right-petal arch mould, the middle arch moulds move on the middle arch mould rails according to a construction range, the left-petal arch mould, the right-petalarch mould, the middle arch moulds and the arch mould support frame form the arch mould for pipeline lining masonry, and two arch moulds are connected in a penetrating manner to form the arch mould for lining masonry for the pipeline tee joint of the industrial furnace. The method disclosed by the invention is capable of increasing the construction space, thereby avoiding the oppressing sensationof construction personnel in a construction process; setting-out and masonry for the intersecting lines of bricks are facilitated, so that the masonry quality for the tee joint is improved, and the masonry efficiency for the tee joint is increased; and inspection for whether the closed brick joints of the bricks at an arch crown meet requirements or not is facilitated, so that the masonry qualityis improved.

The invention provides a filling type concrete shell plate arch bridge. The filling type concrete shell plate arch bridge is an innovative bridge type structure of a masonry arch bridge and has the advantages that material obtaining is easy and convenient, the force is reasonable, the manufacturing cost is low, and the application range is wide. Based on original computational examples, brief introduction PPT slides and a WORD manuscript of the filling type concrete shell plate arch bridge are further summarized and supplemented from the aspects of structural sketches, force principle analysis, section calculation methods, side wall stability checking, material strength design indexes and the like. 'Five different' and 'five first' of the bridge type are outstandingly reflected, specifically, 'five different' comprises that the structures are different, materials are different, the force is different, calculation methods are different, and construction is different; and 'five first' comprises that the stabilized soil materials are used for the bridge structure for the first time; the stabilized soil materials are proposed to be used for bridge structure strength calculation indexes through tests for the first time; the masonry composite system arch bridge is designed for the first time, and a series of internal force and section strength checking is conducted; the calculation method for an arch building to participate in calculation of the force of a main arch ring is put forward for the first time; and related formulas of a 'stabilized soil-reinforced concrete' composite structure to conduct section strength calculation according to a reinforced concrete structure section calculation mode are deduced for the first time.

The invention discloses a pre-laying method for hearth bricks of a multi-layer roasting furnace. The method comprises: selecting and classifying the bricks according to the main dimension tolerance of the bricks with a grade of 1mm, and checking the shape of the bricks, Exclude unqualified bricks; grind the ash surface of the selected bricks to ensure that the bricks can be tightly bonded during masonry; draw a cross center line on the pre-installed platform to make the cone of the hearth brick Facing upwards, starting from the first layer of arches, each layer of arches is lined up one by one from the outer ring to the inner ring. After the completion of the masonry, check the surface evenness, and polish the bricks whose error exceeds the predetermined value; After the arch masonry is polished, draw a cross center line on the surface of the arch, and number the bricks block by block; store the numbered bricks according to the number, wherein, in the process of masonry, the main size of the same ring is the same Grade brick masonry, and when two grades of bricks are required to be used together, large grade bricks are ground into small grade bricks for masonry.

The invention relates to a reinforcement structure of a small-span masonry arch bridge, which comprises an arch bridge body, an arch ring is arranged in the middle of the arch bridge body, and an abutment is respectively arranged at both ends of the arch bridge body, and each abutment is close to the arch bridge One side of the middle part of the main body is provided with a reinforcement seat, and arches are supported on the two reinforcement seats. The arc-shaped back of the arches is provided with a steel plate, and the space between the steel plate and the arch ring is arranged to form a cavity. A reinforcement cage is arranged in the chamber, and concrete is poured in the chamber. The invention has the effect of avoiding damage to the arch ring during the reinforcement process.

The invention belongs to the technical field of bridge construction, and discloses a masonry arch bridge longitudinal perforation dead load balance transformation method. The masonry arch bridge longitudinal perforation dead load balance transformation method comprises the following steps: (a) a part of concrete of a bridge floor cast-in-place layer on the downslope side is removed; (b) channeling is carried out on an arch cavity filling along the longitudinal direction of a masonry arch bridge and a longitudinal groove is formed; (c) an abutment is arranged in the longitudinal groove, a perforation cover plate is laid, the abutment and two side walls jointly support the perforation cover plate, with this mode, longitudinal perforation holes are formed between the perforation cover plate and the arch cavity filling; and (d) concrete is poured on the perforation cover plate for filling a gap formed by the concrete removed in the step (a), thereby accomplishing masonry arch bridge longitudinal perforation dead load balance transformation. On the premise that no bridge floor longitudinal slope is changed, symmetrical balance of dead load weight of the left side and the right side of the masonry arch bridge is realized, stress symmetry of a main arch ring is guaranteed, the bridge safety is improved effectively, and the appearance uniformity of the upslope side and the downslope side of the masonry arch bridge is realized.

The invention relates to an industrial furnace flue masonry arch vaulting construction vehicle. The industrial furnace flue masonry arch vaulting construction vehicle comprises a frame, a frame lifting mechanism, an arch vaulting, a bracket and a bracket lifting mechanism and is characterized in that the frame comprises drive wheels mounted at the bottom end, the frame lifting mechanism drives thewhole frame to ascend and descend, the bracket is mounted at the top of the frame, one end of the bracket is hinged to the frame, the other end of the bracket is arranged on the frame, the lower endof the bracket is connected with the bracket lifting mechanism, the bracket lifting mechanism drives the other end of the bracket to ascend and descend, and the arch vaulting is mounted on the bracket. The industrial furnace flue masonry arch vaulting construction vehicle has the advantages that one drive motor is used to drive multiple worm gear-screw lifters to conveniently synchronously jack the frame to allow the arch vaulting to fast ascend to designed elevation; the bracket is hinged to one end of the frame, the bracket is driven to rotate through the bracket lifting mechanism so as to perform angle adjustment, and the arch vaulting setting requirements of a horizontal flue can be satisfied while the oblique connection requirements of two arch vaulting of different elevation differences can be satisfied.

The invention relates to the technical field of arch bridges, in particular to a reinforced portable integral prefabricated masonry arch bridge, which comprises a bridge body and a bridge deck, wherein the inner side of the bridge body is provided with an arch ring; the arch ring comprises a main body consisting of a plurality of prefabricated arch blocks arranged in turn, and a fiber reinforced composite material connecting layer fixedly attached to the upper surface of the main body; side faces of every two adjacent prefabricated arch blocks are attached to each other; lower surfaces of all prefabricated arch blocks form a lower surface of the arch ring; the fiber reinforced composite material connecting layer is fixedly connected with the upper surface of each prefabricated arch block; a transverse pull rod is arranged between arch feet of the bridge body; and two ends of the transverse pull rod are fixedly connected with the bridge body through bolts. Compared with the prior art, the transverse pull rod is arranged between the arch feet of the bridge body and is used for providing self lateral restriction for an arch body, so that the bearing capacity and stability of the arch bridge structure are improved and the arch bridge can be applied to soft foundations.