Construction Technology of Fuzhou Bridge

Construction Technology of Pingsheng Bridge System Transformation

[Abstract] This paper briefly introduces the key construction technology and experience in the system transformation process of Pingsheng Bridge, which has great reference and guidance for the construction of self anchored suspension bridges and other large bridges; significance.

Technical Scheme for Main Arch Construction of a Bridge

The arch rib of the main arch of this bridge adopts 6-tube arch rib section, and each rib is composed of 6 φ 850mm steel pipe concrete. The main arch rib inclines inward 5 °, the center distance at the arch foot is 36.0m, and the center distance of the arch rib at the vault is 19.157m. The chord center height of the main arch springing section is 4m, and the chord center height of the main arch crown section is 10m. The wall thickness of the steel pipe changes from 20mm to 92m from the vault down

Summary of closure construction technology of a bridge

This data is a summary of the closure construction technology of a bridge. The main bridge type of a bridge is a single tower double cable plane cable-stayed bridge plus a T-shaped rigid frame. The whole bridge is 516.3m long. The bridge span is arranged as 30+39+34.55+149+200+51m, of which 34.55m is the outrigger of the cable-stayed bridge, and 149+200+51m is the combination of the cable-stayed bridge and the T-shaped structure

Summary of construction technology of a super large bridge

This document is a summary of the construction technology of a super large bridge. The bridge span is 29 × 32+3 × 24m post tensioned prestressed reinforced concrete beam. The piers of this bridge are rectangular. The content is detailed and worth downloading.

Construction Technical Scheme of Mozitan Bridge

Construction Technical Scheme of Mozitan Bridge Construction Technical Scheme of Mozitan Bridge Construction Technical Scheme of Mozitan Bridge

Technical disclosure of formwork construction of a super large bridge

The concrete shall be designed according to the current national standard Specification for Mix Design of Ordinary Concrete (JGJ55) and the concrete strength grade, durability and workability.

Technical disclosure of preloading and pile fixing construction of a bridge

Basic requirements for the fabrication of reinforcement cage: flash butt welding is used for the connection of main reinforcement of reinforcement cage, and single side lap welding is used for the connection of upper and lower reinforcement cages at the orifice, and the lap length is not less than 10d. The overlapping part of stiffening hoop is double-sided overlapping welding, and the overlapping length is not less than 5d. The stiffening hoop and the main reinforcement are connected by electric arc welding, and the spiral hoop and the main reinforcement are connected by lead wire binding.

Technical disclosure of broken pile head construction of a bridge

Firstly, the drill shall be firmly in place, and the deviation between the center of the drill bit and the center of the pile casing shall not be more than 2cm. After the drill bit is in place, the punching shall be started. At first, the drill pipe shall be slightly lifted, the mud shall be beaten in the pile casing, the mud pump shall be started for circulation, and the drilling shall be started after the mud is uniform. The drilling speed shall be properly controlled. The low-speed drilling shall be carried out at the bottom corner of the pile casing, and the drilling shall be carried out at the normal speed after the bottom corner is 1m below the bottom corner.

Technical disclosure of digging pile construction of a ditch bridge

(1) . The rebar should avoid setting joints at the maximum stress of the structure, and the joints should be staggered as far as possible. The distance of staggered joints shall not be less than 35d (d is the diameter of reinforcement), but not less than 50cm. (2) The joints of steel bars shall generally be welded, and hot-rolled steel bars can be lapped as shown in the drawings or approved by the supervising engineer.

Technical disclosure for construction of super large bridge cushion cap

When the steel bar joint is overlapped or welded with the steel bar, it shall be made into a double-sided weld as far as possible. Only when the double-sided weld cannot be made, it is allowed to use a single-sided weld, which must be approved by the supervising engineer.

Technical Scheme for Construction of Main Pier Bearing Platform of a Bridge

The main tower cushion caps (24 # and 25 # pier cushion caps) of this bridge are dumbbell shaped, with the top elevation of the cushion cap being+26m and the bottom elevation being+21m. The maximum width in vertical and horizontal direction is 53.6m × 19.4m, and the thickness is 5.0m. The top elevation of the bottom sealing concrete of the double wall steel cofferdam for 24 # and 25 # piers is the bottom elevation of the cushion cap, so after the completion of the pile foundation construction, the accumulated water in the cofferdam can be pumped out

Technical Scheme for Main Bridge Installation of a Bridge

The superstructure of the main bridge of a bridge is a 96.8m single span prestressed tied arch, the calculated span L=95m, the arch axis is a quadratic parabola, and the rise span ratio is 17m. The arch rib is of equal section "I" shape, 1.6 m high and 1.2 m wide; The tie beam is a box beam with uniform section, which is in a circular curve shape. The tie beam is 2.0m high and 1.2m wide; Spacing of each arch rib

Summary of construction technology for pier capping beam of a high-speed bridge

This document is a summary of the construction technology of the pier capping beam of a high-speed bridge. The central stake number of the bridge is K31+286, and the bridge is designed as a 43 × 20m prestressed hollow slab bridge. The upper structure of the hollow slab is simply supported before the structure is continuous. The whole bridge is 865m long. The lower structure uses column piers and abutments, and pile foundations. The pier is designed in the form of two cushion caps, two columns and a single capping beam, with detailed contents and

Summary of swivel construction technology of a super large bridge

This document is a summary of the swivel construction technology of a super large bridge. The bridge type of the bridge with swivel construction method nationwide includes box girder arch, double curved bridge, truss arch, steel arch, inclined leg steel frame, cable-stayed bridge, continuous beam, etc. The content is detailed and worth downloading.

Summary of cantilever beam construction technology of a bridge

This document is a summary of the cantilever beam construction technology of a bridge. The upper part of the main bridge is a (48+80+48) m three span prestressed concrete variable cross-section single box single cell continuous box girder, with two-way prestress; The middle fulcrum beam is 4.0m high, and the mid span and side span beam ends are 2.0m high. The beam height changes according to the quadratic parabola. The content is detailed and worth downloading.

Technical disclosure of cushion cap construction of Shouzhan Super Major Bridge

Construction technology, construction methods and requirements, quality control requirements

Summary of construction technology of Xieyangxi Bridge

This information is a summary of the construction technology of Xieyangxi Bridge. It is detailed and accurate, and is only for reference. I hope it can help you.

Technical disclosure of excavation pile construction of bridge project

The concrete shall be mixed by drum mixer, and the slump should be about 14 cm.

Technical Disclosure Record of Bridge Digging Pile Construction

Construction Technology of Digging Pile for Huxi Bridge in Anji Huxi Ecological Park

Construction technical disclosure of bridge digging pile project

The site shall be leveled, the dangerous rocks and floating soil around the surface shall be removed, and the soft soil layer shall be removed and compacted.

Technical disclosure of bored pile construction of a bridge

The bridge bored pile construction technology disclosure, detailed design, for designers reference.

Technical Scheme for Construction of Bearing Platform of xx No. 3 Bridge

Technical disclosure of a bridge deck pavement construction

Technical disclosure of general plastering construction

General plastering construction technology disclosure, detailed design, for designers reference.

Technical disclosure of construction of anti slide pile

1. The length of anti slide pile is 22 (20) m, the cantilever is 8 (6) m, the section size is 2.5 × 3.5 m, and the pile spacing is 6 m. 1. Before construction, contact the Engineering Technology Section of the Project Department to carry out the excavation of pile holes according to the established construction sequence. 2. According to the determined construction sequence, contact the construction survey personnel of the Project Department to survey the pile position, and use the total station to set out the pile

Construction Technical Scheme of Dagou Bridge with Bored Cast in place Piles

The foundation of the bridge is cast-in-place bored piles with diameters of 1.5m and 1.3m, 208m ф 1.3m piles and 4328m ф 1.5m piles. It is proposed to adopt two construction schemes of manual hole digging and mechanical drilling. Before drilling, the construction method, various raw material tests, mix proportion and description of equipment used shall be reported to the supervising engineer for approval and approved by the supervising engineer

Analysis on the construction technology of a bridge formwork project

This paper introduces the general situation of a bridge project in Yangquan City, and emphatically expounds the construction technology, formwork design and installation of the bridge formwork project, that is, the construction technical scheme of using ordinary steel formwork, stereotyped steel formwork and bamboo plywood formwork.

Construction technology of steel boxed box for main pier bearing platform of a bridge

A bridge has two main piers, 22 # and 23 #. The water depth, flow rate and foundation construction at this pier location are very difficult, and there are many unpredictable factors. The safe construction and smooth sinking of the steel boxed box directly restrict the success or failure of the entire cushion cap construction. This paper mainly introduces the design, processing, assembly and overall lowering of the steel boxed box of the main pier cushion cap.

Technical disclosure for construction of bridge cushion cap of non navigable span of bridge

The cushion cap box of non navigable span bridge shall be constructed with prefabricated concrete box, and the top surface of the concrete box shall be installed with wave board. Before the concrete casing prefabrication, the reserved position of the pile hole on the bottom plate of the concrete casing shall be determined according to the measured pile position of the steel casing at each pier, and the concrete casing prefabrication shall be carried out. The wave board is installed on the top of the concrete box and bolted to it. The concrete box and the wave board are lifted and lowered by a 200t floating crane. Hangers are required for lifting

Technical Scheme for Construction of Bearing Platform of Wujiang Super Major Bridge

Sinan Jianhe Expressway is the second longitudinal section in the "678" network of the Guizhou Provincial Framework Highway Network Planning - the middle section of Yanhe Rongjiang Expressway. It starts from Sinan, connects with Sinan Zunyi Expressway of Hangzhou Ruili Line, ends at Jianhe, and connects with Sansui Kaili Expressway of Shanghai Kunming Line, with a total length of 152.74km, a design speed of 80km/h, and a subgrade width of 21.5

Technical Scheme for Cantilever Cast Box Girder Construction of Bridge Project

The XX River Bridge on XX Avenue in XX City has six two-way lanes, with non motor vehicle lanes and sidewalks. The top slab of the main bridge is 34m wide and the bottom slab is 24m wide. The main bridge is a 5-span special-shaped continuous beam bridge structure with a span combination of 55+100+120+100+55=430m. The superstructure is mainly composed of steel arch ribs, prestressed concrete box girders and flexible suspenders. Prestressed concrete box girder

[Hebei Engineering University] Donghai Bridge Construction Technology

The number of joints of reinforcement in the same section is not more than 50% of the total number; The lower iron of the beam joint is set at the edge of the stirrup densified area, within 1/3 of the distance from the support, and the upper iron is within 1/3 of the midspan, and staggered by 50%. The distance between the column joint position and the ground shall meet ≥ 1/6 of the clear height of the column, ≥ the size of the long side of the column section, ≥ 500mm; And the connector is up and down

Record of hole cleaning disclosure of super large bridge construction technology

Pay attention to the following items when cleaning the hole: (1) When cleaning the hole and discharging the slag, pay attention to keeping the water head in the hole unchanged to prevent the hole from collapsing due to the reduction of the mud proportion when changing the slurry; (2) During hole cleaning, mud sampling shall be conducted from the top, middle and bottom of the pile hole for inspection, and the average value of mud from the top, middle and bottom shall be taken for each index; (3) During the construction, the operation team shall not use the deepening drill

Technical disclosure of formwork construction of super large bridge cushion cap

Precast concrete cushion blocks used to ensure the reinforcement is fixed in the normal position shall be made as small as possible according to their purpose, and their shape and size shall be acceptable to the supervising engineer. At the same time, it shall be designed so that it will not topple when pouring concrete. When concrete cover cushion blocks are used, the maximum aggregate size is 10mm, the strength shall be the same as that of adjacent concrete, and 1.6 mm diameter

Technical disclosure of subdivisional works of a highway bridge

Before pouring underwater concrete, the sediment thickness shall be checked. If the sediment thickness is greater than 200mm, the conduit shall be used for secondary hole cleaning. If necessary, high-pressure air shall be used to punch the sediment at the bottom of the hole. After the hole cleaning, the underwater concrete shall be poured immediately. Test the specific gravity, sand content and viscosity of mud. After passing the inspection, the construction personnel and on-site technicians shall report to the supervising engineer for acceptance and make records.

Construction Technology Document of Cantilever Cast Box Girder of Bridge Project

The XX River Bridge on XX Avenue in XX City has six two-way lanes, with non motor vehicle lanes and sidewalks. The top slab of the main bridge is 34m wide and the bottom slab is 24m wide. The main bridge is a 5-span special-shaped continuous beam bridge structure with a span combination of 55+100+120+100+55=430m. The superstructure is mainly composed of steel arch ribs, prestressed concrete box girders and flexible suspenders. Prestressed concrete box girder

Technical document for installation and construction of t beam of bridge project

1. Brief Description: This project is a section of XX (XX) - XX (XX) Highway, one of the eight major western highways in China, and also an important section of XX - XX Highway, the fourth capital radiation in the national highway network ("XX" network for short). The starting stake number of this bid section is XX64+050, which is connected to Daxiangling Tunnel of XX7 contract section, and the ending stake

Technical Scheme for Installation of 30m Box Girder of a Bridge

A total of 160 box girders are required to be installed for K128+270xx Bridge, with a structure of 20 × 30m. The span combination is one for every four holes, with a total of five. During installation, it is simply supported first and then continuous. Wet joint, end cross beam, middle cross beam, diaphragm plate cast-in-situ 50 # concrete 1101m3.