Construction organization design of a highway (implementation) in Shenzhen

Uploaded on: 2019-02-20 14:10:01 come from: Road and bridge municipal administration / Road and bridge construction design / Construction organization design

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1. Project overview The municipal project of * * Road in Shenzhen is located in the middle of the special zone, in a north-south direction, with a total length of 14.38 kilometers and six lanes in both directions. It is one of the "one horizontal and eight vertical" trunk line networks that Shenzhen will focus on building in the near future. This section is mainly the Liuxian Interchange Project at the intersection of * * Road and Liuxian Avenue, of which * * Road stake number is K4+508.454 ～ K5+640; The stake number of Liuxian Avenue is K9+680 ～ K11+009.113.

Construction Organization Design of a Highway (Implementation) in Shenzhen - Figure 1

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Excavate to about 50m before the tunnel penetration, and retest the underground conductors according to the requirements of Class I conductor accuracy to ensure the penetration accuracy. (2) Vertical control survey in the tunnel The leveling point and traverse point in the tunnel are set together, and Class II leveling methods and instruments are used for survey. The discrepancy and closure tolerance are ≤± 8 mm, and the excavation is about 50 m before the tunnel penetration. The underground traverse is retested according to Class II leveling accuracy requirements to ensure the penetration accuracy. 3、 Construction survey The daily construction survey in the tunnel is in the charge of the operation team. The construction traverse is set by using the traverse control points in the tunnel. The side length of the construction traverse is 30-50m. The elevation points used for construction in the tunnel shall be densified according to the elevation control points set in the tunnel and closed to the elevation control points. The central line and elevation shall be transferred to the excavation face in time, and the excavation contour line shall be drawn. After excavation, the section record shall be made. Before the initial support and secondary lining, the central line elevation stake points shall be handed over. After the lining trolley is in place or the formwork is erected, the retest shall be carried out, and the pump shall be started for grouting after the accuracy is confirmed. 4、 Tunnel breakthrough error measurement Plane breakthrough measurement: at the tunnel breakthrough surface, coordinate method is used to measure the coordinate difference of the breakthrough point from both ends (one end is the adjacent bid section), and it is reduced to the reserved section and centerline to obtain the horizontal breakthrough error and longitudinal breakthrough error. Elevation penetration survey: use a level to measure the elevation of the penetration point from both ends of the penetration surface (one end is the adjacent section), and the error is the vertical penetration error.

Topic: Shenzhen Flood Control Shenzhen Construction Contract Shenzhen Construction Contract
Shenzhen City Construction organization design of a bid section of a water supply and storage project
Content introduction 1.1 Project overview 1.1.1 Project overview xx water supply regulation and storage project is located in the upper reaches of Maozhou River in Shenzhen, across xx and Guangming sub district offices. The project consists of four parts: xx reservoir expansion project, overseas water source connection project (i.e., the connection project from the Ejing Reservoir to xx Reservoir), water supply transmission and distribution project (i.e., the interconnection project with Shiyan Reservoir) and rainwater and flood utilization project. Among them, xx Reservoir Expansion Project is a large-scale water supply regulation and storage project based on the expansion of xx's original three small reservoirs, namely Hengjiang Reservoir, Shitouhu Reservoir and Guangming Jingkou Reservoir. The reservoir dam site is located 350 m downstream of the current Hengjiang Reservoir, with a controlled rainwater collection area of 11.77 km2. Its scale is based on Shenzhen's water source reserve demand, terrain conditions, water source conditions, economy After comprehensive consideration of soil reserve and other aspects, the normal water level is finally determined as 59.7m, and the corresponding normal storage capacity is 142 million m3. The main buildings are composed of six dams, spillway and drainage tunnel. The total length of the dam is 4.39km, the maximum dam height is 54m, and the water surface area of the reservoir area is 6.0km2. The connecting tunnel from Ejing Reservoir to xx Reservoir is basically arranged along the ridge between the two reservoirs, with a total length of 4.64km; The total length of the water supply project from xx reservoir to Shiyan reservoir is 6.4 km, most of which are tunnels. The water conveyance scale of the connecting tunnel and the water conveyance tunnel is 1.365 million m3/d and 0.885 million m3/d respectively, and the corresponding tunnel diameters are 3.6m and 3.4m respectively. Rainwater and flood utilization project: the existing Baihua water lifting project will be reconstructed to increase the capacity of its regulation and storage tank and increase its water yield. 1.1.2 The main buildings of bid section x within the scope of this bid section include No. 4 dam, water release tunnel and its inlet and outlet buildings, the secondary buildings are No. 1 highway and No. 5 highway, the temporary works include 14 temporary roads, diversion channels and construction cofferdams, in addition, the dam crest and road lamp electrical works and water and soil conservation works. The dam crest is 63.5m high and 8m wide. The dam type is an earth rock dam with clay core. The total length of the dam crest is 1121m, the maximum dam height is 50.7m, and the maximum bottom width is about 280m. The core wall of the dam is made of completely weathered soil, the upstream and downstream dam shells are made of strongly weathered soil and stone, and the core wall and dam shell are made of sand filter and transition. The upstream slope ratio of the dam is 1:3, and the downstream dam slope is provided with a 2.0m wide berm at an elevation of 45m. The slope ratio above the berm is 1:2.5, and that below the berm is 1:2.75. The upstream slope protection adopts cast-in-place C20 concrete with a thickness of 250mm. The water release tunnel is arranged at the foot of Damashan Mountain between No. 4 and No. 5 dams, with a length of 423m. The water release tunnel is also used for venting, water supply and diversion. It is comprehensively considered that the tunnel is a round pressure tunnel, with an inner diameter of 3m.

Topic: Shenzhen Flood Control Shenzhen Construction Contract Shenzhen Construction Contract
Shenzhen City Construction organization design scheme of reclamation project
The project is located in the south of the three major scenic spots in Shenzhen, starting from Qiaocheng Road in the east, Shahe East Road in the west, Binhai Avenue in the south, and Baishizhou Road in the north, with a total land area of 288.5 hectares. Phase I project has been completed, and our bidding scope is Phase II project area V in the middle of the site, that is, Baishizhou South, section road here, and between No. 6 Road and No. 7 Road. The work scope of this section is 8m within the red line of the surrounding roads, with a processing area of 138020.9m2.

Topic: Project construction organization design scheme Shenzhen Flood Control Shenzhen Construction Contract
Shenzhen City Decoration construction organization design scheme of a bid section
Special discussion meeting system: in case of major problems, the Owner, the Designer, the Supervisor, the General Contractor and relevant subcontractors shall discuss and solve them together. This special discussion meeting shall be held irregularly according to the actual situation.

Topic: Shenzhen Flood Control Shenzhen Construction Contract Waterproof construction scheme of Shenzhen
Shenzhen City Detailed construction organization design of a decoration project
The business group consists of the material group and the labor and material measurement group. The material team consists of a buyer, a material review clerk and a warehouse keeper, who are respectively responsible for the material purchase, review, receiving and dispatching of the project. The quantity measurement group has two quantity surveyors. The construction team has two chief construction foremen and one electromechanical foreman, who are respectively responsible for the fine decoration construction management of 2 # and 3 # scientific research buildings and the electromechanical installation within the fine decoration scope of the two buildings.

Topic: Shenzhen Project Contract Shenzhen Flood Control Shenzhen Project Claim Report
Shenzhen City Construction organization design of a building project
The project is located at the intersection of Bao'an South Road and Jiabin Road in * * District, Shenzhen, and the east side is the Jiabin Garden Residence. The total land area is 5529.1m2, and the total building area is 60202.9 m2, including 13794 square meters underground, 48655 square meters above the ground, 3 floors underground, 29 floors above the ground, and the building height is 99 meters. The roof is a steel structure arc roof. The project adopts manual hole digging pile, and the main building pile uses slightly weathered rock as the pile end bearing stratum.

Topic: Shenzhen Construction Contract Shenzhen Flood Control Shenzhen Decoration Project Construction Scheme
Shenzhen City Construction organization design of an industrial park
********All buildings, earthwork excavation and all outward transportation, pile foundation, main structure, water supply and drainage, strong and weak current installation (all contents of the drawing from the outgoing line of the low-voltage distribution cabinet for strong current), electrical pipeline connection works, and all reservations and embedments included in the bidding drawings of the industrial park project are all contents included in the bidding drawings.

Topic: Shenzhen Flood Control Shenzhen Construction Contract Shenzhen Construction Contract