Detail Design of Reinforcement Structure Node of 16m T-beam Abutment Cap

2. Design standard According to the requirements of the assignment, the design load of this bridge is steam level 20 and hanging level 100. The bridge is 7.5m wide and the carriageway is 6.5m wide. Cement concrete deck is adopted. 3. Geology of the bridge site The landform of the bridge site belongs to the intermountain valley landform, and the terrain elevation varies from 37.00m to 45.00m. The two banks are the alluvial terraces of the Xinxing West River. Because of water storage and power generation, the water depth is always about 3.00m~4.00m. Stratum characteristics at the bridge site are Quaternary alluvium (clay, loam and round gravel) and Cambrian sedimentary rock (weakly weathered sandy shale, strongly weathered sandstone and weakly weathered sandstone) from top to bottom. The seismic fortification intensity of the site is 6 degrees, and the design basic seismic acceleration value is 0.05g. 　　 　　

2. Design standard According to the requirements of the assignment, the design load of this bridge is steam level 20 and hanging level 100. The bridge is 7.5m wide and the carriageway is 6.5m wide. Cement concrete deck is adopted. 3. Geology of the bridge site The landform of the bridge site belongs to the intermountain valley landform, and the terrain elevation varies from 37.00m to 45.00m. The two banks are the alluvial terraces of the Xinxing West River. Because of water storage and power generation, the water depth is always about 3.00m~4.00m. Stratum characteristics at the bridge site are Quaternary alluvium (clay, loam and round gravel) and Cambrian sedimentary rock (weakly weathered sandy shale, strongly weathered sandstone and weakly weathered sandstone) from top to bottom. The seismic fortification intensity of the site is 6 degrees, and the design basic seismic acceleration value is 0.05g. 　　

This drawing is the node detail drawing of abutment cap reinforcement arrangement of prestressed concrete T-beam continuous rigid frame bridge

2、 Main technical standards 1. Road grade: Class II highway; 2. Design running speed: 80 km/h; 3. Design load: highway - Class II; 4. Deck width: 0.5m (guardrail)+14.5m (motorway)+0.5m (guardrail)=15.5m; 5. Bridge deck pavement: 10cm asphalt concrete; 6. Bridge deck cross slope: two-way 2%; 7. Span layout: 10+16+10m; 8. The peak ground acceleration is 0.10g. 　　

Detail drawing of reinforcement structure node of T-beam abutment cap beam of secondary road

Detailed drawing of structural node of abutment cap reinforcement of high-speed channel

The drawing shows the structural drawing of abutment cap reinforcement of three span prestressed concrete continuous rigid frame bridge. ... 1 sheet in total.

Part of the bridge plane is located on the right turning curve of JD34 (K537+536.9), R=1900m, and part is on a straight line; The vertical slope of the elevation is i=-4.8% (slope length 840), and the stake number of adjacent grade change points is K537+980. In order to improve the driving conditions, the left side adopts a continuous structure of two links (four holes one link+four holes one link), and the right side adopts a continuous structure of two links (four holes one link+four holes one link); There are 6 expansion joints in the whole bridge. 　　

2. The design load of this bridge is level 20 for steam super and 120 for trailer. 3. The bridge is located on circular curve and transition curve, and the piers and abutments are arranged in parallel. 4. The number in the schematic diagram of pile location plane layout represents the pier and abutment number. 5. After setting out the pile position, it shall be checked according to other corresponding relationships, and the pile foundation construction can be carried out only after there is no error. If there is any discrepancy and error, it shall contact the design unit for handling in time.

A separate bridge is designed at ZK35+808 (YK35+769) of the contract section. The design mileage of the left track is from ZK35+540 to ZK36+076, with a total length of 536m and a central stake of ZK35+808; The design mileage of the right track starts from YK35+525 to YK36+013, with a total length of 488m, and the center mileage is YK35+769. The superstructure of the main bridge on the left line uses (4 × 40+4 × 40+5 × 40) m continuous T beam, and the superstructure of the main bridge on the right line uses (4 × 40+4 × 40+4 × 40) m continuous T beam, which is constructed by the method of "simple support first and continuous". The substructure on the left line uses double column, pile foundation, and the abutment uses U-shaped gravity abutment and expanded foundation; The substructure of the right line adopts double column and pile foundation, and the abutment adopts pile column abutment and U-shaped gravity abutment, pile foundation and expanded foundation.

Design standard: Grade 20 automobile, trailer - 100 bridge width: 0.25+3.0+3.0+2 4.5+3.0+3.0+0.25=21.5m. Bridge length: 6.83+5x67.00+6.83=348.66m

General Structural Drawing of T-beam Abutment of Secondary Road

Detailed drawing of prestressed reinforced concrete T-beam abutment pile foundation reinforcement structure node

Detail drawing of prestressed reinforced concrete T-beam abutment back wall reinforcement structure node

Detail drawing of prestressed reinforced concrete T-beam abutment side wall reinforcement structure node

Part of the bridge plane is located on the right turning curve of JD34 (K537+536.9), R=1900m, and part is on a straight line; The vertical slope of the elevation is i=-4.8% (slope length 840), and the stake number of adjacent grade change points is K537+980. In order to improve the driving conditions, the left side adopts a continuous structure of two links (four holes one link+four holes one link), and the right side adopts a continuous structure of two links (four holes one link+four holes one link); There are 6 expansion joints in the whole bridge. 　　

The bridge is located in xx Village, xx Town, xx County, close to the National Highway 319, with convenient traffic conditions. The starting and ending chainages of the bridge are K75+706.611 ～ K75+986m. There is a long route chain (K75+725.939=K75+707.328) on the bridge, with a total length of 296m. The plane of the bridge is located on the circular curve of the main line R=1020m; The longitudinal slope on the bridge is 1.365% and - 3.7% respectively; Piers and abutments are arranged radially. The whole bridge is divided into two parts: (3x40) m+(4x40) m; The superstructure adopts prestressed concrete (post tensioned) T beam, and adopts the method of "simple support first and then structural continuity" for construction; The substructure abutment adopts U-shaped abutment and open cut expanded foundation; Column piers and rock socketed dug pile foundations are adopted for bridge piers. 　　

Detail drawing of prestressed reinforced concrete T-beam abutment cap beam reinforcement structure node

Detailed drawing of prestressed reinforced concrete T-beam abutment cushion cap reinforcement structure node

A separate bridge is designed at ZK35+808 (YK35+769) of the contract section. The design mileage of the left track is from ZK35+540 to ZK36+076, with a total length of 536m and a central stake of ZK35+808; The design mileage of the right track starts from YK35+525 to YK36+013, with a total length of 488m, and the center mileage is YK35+769. The superstructure of the main bridge on the left line uses (4 × 40+4 × 40+5 × 40) m continuous T beam, and the superstructure of the main bridge on the right line uses (4 × 40+4 × 40+4 × 40) m continuous T beam, which is constructed by the method of "simple support first and continuous". The substructure on the left line uses double column, pile foundation, and the abutment uses U-shaped gravity abutment and expanded foundation; The substructure of the right line adopts double column and pile foundation, and the abutment adopts pile column abutment and U-shaped gravity abutment, pile foundation and expanded foundation.

This drawing is the node diagram of simply supported beam abutment pile foundation reinforcement structure

A separate bridge is designed at ZK35+808 (YK35+769) of the contract section. The design mileage of the left track is from ZK35+540 to ZK36+076, with a total length of 536m and a central stake of ZK35+808; The design mileage of the right track starts from YK35+525 to YK36+013, with a total length of 488m, and the center mileage is YK35+769. The superstructure of the main bridge on the left line uses (4 × 40+4 × 40+5 × 40) m continuous T beam, and the superstructure of the main bridge on the right line uses (4 × 40+4 × 40+4 × 40) m continuous T beam, which is constructed by the method of "simple support first and continuous". The substructure on the left line uses double column, pile foundation, and the abutment uses U-shaped gravity abutment and expanded foundation; The substructure of the right line adopts double column and pile foundation, and the abutment adopts pile column abutment and U-shaped gravity abutment, pile foundation and expanded foundation.

Detail drawing of prestressed reinforced concrete T-beam abutment ear and back wall reinforcement structure node

1. Structure type: upper part: 8.0m span, prefabricated reinforced concrete hollow slab. Support: wax impregnated felt with a thickness of 1cm. Lower part: reinforced concrete light abutment is used to expand the foundation. 2. Main materials: (1) Concrete: 30 # concrete is used for hollow slab, hinge joint, bridge deck pavement and hollow slab head. 25 # concrete is used for abutment cap, abutment body, ear wall, approach slab, foundation and support beam. (2) Stone: grade shall not be less than 30. 　　

1. The design elevation of the bridge is the elevation of the bridge deck at the center line of the bridge. 2. Bridge design load: automobile - Grade 20. 3. The bridge centerline coincides with the road centerline at the bridge location. 4. It is required that the hollow slab shall be backfilled behind the abutment after being cast in situ and compacted manually, with the compactness ≥ 93%. 　　

Detailed drawing of reinforcement structure node of 16m hollow slab abutment capping beam

Detailed drawing of 13m hollow slab abutment capping beam reinforcement structure node

The construction drawings of separated overpass include: bridge site plan, full bridge materials and bill of quantities, bridge type layout, bridge deck coordinates, general structure of piers, reinforcement structure of pier column, reinforcement structure of pier foundation, general structure of abutment, reinforcement structure of abutment cap, reinforcement structure of ear, back wall and retaining block, reinforcement structure of abutment body, reinforcement structure of abutment foundation, foundation coordinates Top elevation of bearing pad stone, general structure of conical slope, structure of water dustpan, road diversion plan (I), road diversion plan (II), road diversion profile (I), road diversion profile (II), road diversion profile (III), road diversion standard cross section, straight line, curve and corner table.

Detailed drawing of general structural nodes of prestressed concrete continuous rigid frame T-beam abutment

2、 Technical indicators: 1. Design load: highway Class I; 2. Environment category: Class I; 3. Structure importance coefficient: 1.1; 4. Span: 30m; 5. Skew angle: 0 °; The longitudinal bridge direction of the bridge is designed as flat slope, and the transverse bridge direction gradient is 2%. One link is a fabricated partially prestressed concrete T-shaped continuous beam of 3 × 30m to 6 × 30m. The structural system of multi T single prefabrication, simple support installation and cast-in-place continuous joint is adopted. The bearing setting mode shall be determined by calculation according to the temperature amplitude, the number of holes per link, the height of piers and other specific conditions, except that the sliding plate bearing shall be set at each link end bearing.