30results about How to "Effective control of construction quality" patented technology

The invention relates to a frame and spring combination type bridge and road transition section structure integrated with a bridge abutment. The frame and spring combination type bridge and road transition section structure comprises the bridge abutment, a beam and a subgrade body and further comprises a steel reinforced concrete transition section frame and a plurality of high-strength spring bundles. The steel reinforced concrete transition section frame comprises a prefabricated horizontal steel reinforced concrete plate and a prefabricated oblique steel reinforced concrete supporting plate. The prefabricated horizontal steel reinforced concrete plate is connected with the upper end of the bridge abutment through a first high-strength hinged bolt, the prefabricated oblique steel reinforced concrete supporting plate is connected with the lower end of the bridge abutment through a second high-strength hinged bolt, and the other end of the prefabricated horizontal steel reinforced concrete plate is connected with the other end of the prefabricated oblique steel reinforced concrete supporting plate through a third high-strength hinged bolt. The prefabricated oblique steel reinforced concrete supporting plate is fixedly attached to the subgrade body. The high-strength spring bundles are vertically installed between the prefabricated horizontal steel reinforced concrete plate and the prefabricated oblique steel reinforced concrete supporting plate. The frame and spring combination type bridge and road transition section structure solves the problem that a sedimentation difference is caused by a rigidity difference between special-shaped buildings in a transport line.

The invention relates to concrete pouring construction methods of constructional engineering, in particular to a pouring construction method of a frame structure with concrete nodes of multiple mark numbers, and solves the problem that at present, node portions are often of poor construction quality when a traditional method is used for pouring concrete of multiple mark numbers. The pouring construction method of the frame structure with the concrete nodes of multiple mark numbers comprises the following steps: carrying out steel bar banding of frame columns according to the design and the construction scheme of the frame structure, carrying out template supporting and arranging construction of frame columns, beams and plates according to the construction scheme, carrying out steel bar banding of the beams and the plates according to structural design and the construction scheme, and banding a steel wire net (1) vertically on the banded internal surrounding frame columns of the steel bars of the beams and the plates, wherein the steel wire net (1) is 500 m to 600 m away from the periphery of the frame columns. The pouring construction method of the frame structure with the concrete nodes of multiple mark numbers is reasonable in design, convenient to operate, fast in construction, and capable of controlling the construction quality of concrete of different mark numbers.

The invention discloses a suspended prefabricated shear wall semi-buried inner wall connecting structure and a method, and belongs to the field of prefabricated concrete structures. The connecting structure is used for connecting an upper suspended wall body and a lower suspended wall body, wherein a force bearing rod is arranged in the lower bracket wall body, the force bearing rod is connected with the upper suspended wall body comprising a lifting frame through a bolt, and then a penetrating nut which is completely screwed into the lower bracket wall body is reversely screwed back to an extension steel bar of the upper suspended wall body to complete steel bar connection; and a prefabricated bottom plate is installed on a suspension plate at the bottom of the lifting frame, an upper-layer steel bar of a floor penetrates through a semi-buried connecting area to form a steel bar mesh together with a Chinese character "gong"-shaped steel bar fixing frame on the prefabricated bottom plate, concrete is poured, a fully-poured surface layer is formed, and wall body connection is completed. According to the connecting structure, the lifting frame is used for suspending a shear wall, thesteel bars are connected through threads, the structural elevation of the upper-layer wall body is reduced, and integral connection is formed, so that the construction quality of the prefabricated part connecting area can be effectively controlled, and meanwhile, the construction cost is reduced and the construction flow is simplified and facilitated.

The invention discloses a pile column, framework and spring combined bridge-road transition section structure separated from a bridge abutment. The pile column, framework and spring combined bridge-road transition section structure comprises the bridge abutment, a beam body, a roadbed body, a pile column behind the abutment, a reinforced concrete framework and a spring bundle, wherein the pile column behind the abutment is fixedly arranged behind the bridge abutment; the reinforced concrete framework comprises a reinforced concrete prefabricated horizontal plate and a reinforced concrete prefabricated diagonal bracing plate; the reinforced concrete prefabricated horizontal plate and the upper end of the pile column behind the abutment are connected by a first high-strength hinged bolt; the reinforced concrete prefabricated diagonal bracing plate and the lower part of the pile column of the abutment are connected by a second high-strength hinged bolt; the other end of the reinforced concrete prefabricated horizontal plate and the other end of the reinforced concrete prefabricated diagonal bracing plate are connected by a third high-strength hinged bolt; the reinforced concrete prefabricated diagonal bracing plate is fixed on the roadbed body in an attaching manner; the spring bundle is arranged between the reinforced concrete prefabricated horizontal plate and the reinforced concrete prefabricated diagonal bracing plate. According to the pile column, framework and spring combined bridge-road transition section structure, the technical problem that settlement difference exists among special-shaped structures due to rigidity difference in a traffic line is solved, and the settlement of a transition area is controlled by the concrete framework and the spring bundle.

The invention relates to the technical field of bridge subgrade settlement difference control in traffic engineering, in particular to a pile column and framework combined bridge-road transition section structure separated from a bridge abutment. The pile column and framework combined bridge-road transition section structure comprises the bridge abutment, a beam body, a subgrade body, a pile column behind the abutment and a reinforced concrete framework, wherein the pile column behind the abutment is fixedly arranged behind the bridge abutment; the reinforced concrete framework comprises a reinforced concrete prefabricated horizontal plate and a reinforced concrete prefabricated diagonal bracing plate; the reinforced concrete prefabricated horizontal plate and the upper end of the pile column behind the abutment are connected by a first high-strength hinged bolt; the reinforced concrete prefabricated diagonal bracing plate and the lower part of the pile column behind the abutment are connected by a second high-strength hinged bolt; the other end of the reinforced concrete prefabricated horizontal plate and the other end of the reinforced concrete prefabricated diagonal bracing plate are connected by a third high-strength hinged bolt; the reinforced concrete prefabricated diagonal bracing plate is fixed on the subgrade body in an attaching manner; the settlement of a bridge-road transition area is effectively controlled by the reinforced concrete framework; the problem that settlement difference exists among special-shaped structures due to rigidity difference in a traffic line is solved.

The present invention provides an intelligent decision-making system for subgrade and road surface compaction, which includes ① an intelligent prediction system for rolling construction control data, ② an intelligent cloud computing service system, ③ a high-precision positioning system, ④ a wireless network communication system, and ⑤ a remote intelligent quality control system. Monitoring system, ⑥ rolling quality inspection system. Among them, ①according to the subgrade and road surface scenes, real-time intelligent and efficient decision-making of rolling construction control data; ②mainly realized the storage and processing of cluster operation big data, and decision-making model update; ③this system provides high-precision positioning data for the entire rolling system ; ④ Build a high-speed wireless communication link for the system; ⑤ Realize localized real-time intelligent monitoring of the operation process, fully guarantee the rolling quality of the operation process; ⑥ Realize the real-time detection function of the rolling quality. Compared with the current existing intelligent rolling machine technology, the decision-making system of the present invention has cloud computing and storage, intelligent decision-making modeling, and has the function of adapting to the operation scene.

The invention discloses a back-up wall simple support structure and a construction method based on the same. The back-up wall simple support structure comprises an abutment back-up wall, a plurality of steel tubes, a formwork, pre-embedded steel plates, triangular brackets, a square timber, I-beams and formwork brace pieces. The formwork is erected on the abutment back-up wall through the steel tubes, one ends of the I-beams are perpendicularly fixed to the abutment back-up wall, and the pre-embedded steel plates are arranged on the abutment back-up wall and located under the I-beams. One endsof the triangular brackets are fixed to the pre-embedded steel plates, the other ends of the triangular brackets are fixed to the bottoms of the I-beams, and the square timber is arranged on the I-beams. According to the construction method based on the back-up wall simple support structure, the construction progress is speeded up, the labor and mechanical inputs are saved, and the working efficiency is improved.

The invention provides a multistage construction control method for a cold-reclaimed emulsified asphalt mixture. The method is characterized by comprising the following steps: indoor calibration, which includes the following sub-steps: (1) molding a specimen, (2) carrying out preservation, and (3) testing the density, and field detection, which includes the following sub-steps: (1) detecting the compactness after grinding is ended, (2) detecting the compactness after preservation is ended, and (3) detecting the compactness after an overlying layer is paved. According to the method provided by the invention, the quality of a cold-reclaimed layer of emulsified asphalt and the construction progress of the overlying layer can be controlled; and roads of Beijing-Shenyang side road overhauling engineering, Pingguhua west road engineering and the like employing the control method are good in service condition, which proves that the control method provided by the invention is reasonable, reliable and practical.

The invention discloses a combined truss type bridge-road transition section structure integrated with a bridge abutment. The combined truss type bridge-road transition section structure integrated with the bridge abutment comprises the bridge abutment, a beam body and a roadbed body. The combined truss type bridge-road transition section structure integrated with the bridge abutment further comprises a truss transition section structure. The truss transition section structure comprises a prefabricated reinforced concrete horizontal plate, a prefabricated reinforced concrete oblique supporting plate and prefabricated reinforced concrete truss components. The prefabricated reinforced concrete horizontal plate is connected with the upper end of the bridge abutment through a first high-strength hinging bolt. The prefabricated reinforced concrete oblique supporting plate is connected with the lower end of the bridge abutment through a second high-strength hinging bolt. The other end of the prefabricated reinforced concrete horizontal plate is connected with the other end of the prefabricated reinforced concrete oblique supporting plate through a third high-strength hinging bolt. A cavity is defined by the prefabricated reinforced concrete horizontal plate, the bridge abutment and the prefabricated reinforced concrete oblique supporting plate. The prefabricated reinforced concrete truss components are mounted in the cavity. The prefabricated reinforced concrete oblique supporting plate is attached and fixed to the roadbed body. The combined truss type bridge-road transition section structure integrated with the bridge abutment solves the problem that sinking differences are caused by rigidity differences between special-shaped structures in a traffic line, and a truss structure is effectively supported by the roadbed body.