On August 8, 2022, the bidding announcement for the total construction price contract of the Chengdu-Yingshan section of the newly built Chengdu-Dazhou-Wanzhou Railway was released on the Beijing Public Resource Trading Platform, marking that the Chengdu-Yingshan section of the Chengdu-Dazhou-Wanzhou high-speed railway is about to enter. The whole line is in the formal construction stage. According to the announcement, the project is scheduled to start in early October with a construction period of 5 years. The section from Yingshan to Wanzhou is also expected to be tendered soon.

Project Overview

Construction site: Ziyang City, Suining City, Nanchong City

The project started from the Chengdu hub and was built from the Tianfu Railway Station. After using the Chengzi Railway to Ziyang West Railway Station, the new line will be connected to Ziyang City, Suining City, Nanchong City, Dazhou City in Sichuan Province and Kaizhou District and Wanzhou District in Chongqing City. Both Wanzhou North Railway Station. The total length of the line is 486.4 kilometers, including 432.4 kilometers of new railways and 54 kilometers of railways under construction. There are 13 stations on the whole line, including 7 new stations. Supporting the expansion of the Tianfu EMU application station, the reconstruction of the existing 15.4-kilometer railway line, and the newly built 4-kilometer Sui railway connecting line and other related projects.

technical standard

Railway grade of the project: high-speed railway; design speed: 350 km/h; number of main lines: double lines; distance between main lines: 5.0 meters; minimum curve radius: 7000 m; maximum slope: 20‰ for general areas and 30‰ for difficult areas ; Effective length of arrival and departure line: 650 meters; Train operation control mode: CTCS-3 train control system; Dispatching command method: dispatch centralized; Minimum train interval: 3 minutes.

Tender division

This tender is divided into 8 bids, bids: CDWZQ-2, CDWZQ-3, CDWZQ-4, CDWZQ-5, CDWZQ-6, CDWZQ-7, CDWZQ-8, CDWZQ-9.

CDWZQ-2: main line length 19.041km, main line bridges 24/11.794km, roadbed 25/6.191km, 3 tunnels/1.056km, right-line bypass section 3 bridges/1.723km, roadbed 0.829km, box The beam frame is 354 holes, and the double-block ballastless bed and sleepers are transported and installed 31.625km.

The key control projects are: Ziyang Tuojiang Bridge, Lanjiawan Bridge, Renjiawan Bridge, Zengjiawan 1# Bridge.

CDWZQ-3: The main line length is 29.626km, 43 bridges/16.441km, 44 roadbeds/13.248km, 394 holes for box girder frame, double-block ballastless ballast bed and sleeper transportation and installation 60.379km.

The key control projects are: Zhanlingshan Bridge, Jinma Village Bridge, Dishuiyan Reservoir Bridge.

CDWZQ-4: Main line length 31.816km, 31 bridges/20.796km, 34 roadbeds/8.484km, 6 tunnels/2.535km, box girder frame 584 holes, double-block ballastless ballast bed and sleeper transportation and installation 64.619km , Station: Lezhi Station, casting of ballastless track bed and turnout installation and commissioning in the turnout area.

The key control projects are: the extra-large bridge across Suihong Expressway, the Baotou Reservoir Bridge, and the extra-large Lezhi station bridge.

CDWZQ-5: The length of the main line is 32.589km, 41 bridges/19.949km; 49 roadbeds/10.059km; 11 tunnels/2.585km; Construction standard box girder frame 107 holes and bridge deck system, this bidding section and Suicheng connecting line, DK330+000~DK335+213.831 double-block ballastless ballast bed and sleeper transportation and installation 74.716 km, pouring of ballastless ballast bed in the fork area and turnout installation and commissioning.

The key control projects are: Cross-Sui-Nei Expressway Super Bridge, Degong Village Super Bridge, Bai'an River Super Bridge, and Mazitan Reservoir Bridge. Involved in the construction of business lines: Suining Station, Degong Village Bridge.

CDWZQ-6: The length of the main line is 29.875km, 34 bridges/18.139km, 40 roadbeds/5.337km, 22 tunnels/6.399km, 486 holes for framed box beams, including 429 holes for framed box beams in this tender section, CDWZQ -7 standard box girder frame with 57 holes and bridge deck system, 51 holes of cast-in-situ box girder at large mileage end of Fujiang Extra-large Bridge, transportation and installation of double-block ballastless ballast bed and sleepers in this tender section and sections DK313+965.36~DK314+069.063 61.472km, station: Pengxi South Station, casting of ballastless ballast bed and turnout installation and commissioning in the turnout area.

The key control projects are: Suining Fujiang Super Bridge, Ma'an Village Cross-Mian Sui Expressway Super Bridge, Damiangou Reservoir Super Bridge, Daxing Township Cross-Hu-Rong Expressway Super Bridge.

CDWZQ-7: Main line length 28.203 km, 26 bridges/9.498km, 27 roadbeds/5.650km, 14 tunnels/13.055km, double-block ballastless ballast bed and sleeper transportation and installation 56.406km.

The key control projects are: Jiangjiashan Xihe Bridge, Hejiawan Cross-Mulaoganqu Bridge, Zitongmiaohe Bridge, Datong Town Cross-Daily Railway Bridge, Huangjiashan Tunnel and Damushan Tunnel. Involved in the construction of the business line: Datong Town Cross-Da Railway Extraordinary Bridge.

CDWZQ-8: The main line length is 14.51 km, 7 bridges/10.387km, 10 roadbeds/1.926km, 3 tunnels/2.201km, 465 holes for box girder frame, of which 254 holes for box girder frame in this bidding section, CDWZQ -7 standard box girder frame with 211 holes and bridge deck system, this bidding section and DK251+292.18~DK253+800 double-block ballastless ballast bed and sleeper transportation and installation 37.043 km, the casting of ballastless ballast bed and turnout installation in the turnout area are related to debugging.

The key control projects are: Nanchong Jialing River Super Bridge, Qujiamiao Village Cross-Gaonan Railway Super Bridge, Mozishi Village Luxi River Super Bridge, and Erbaoshan Tunnel. Involved in the construction of business lines: Nanchong North Station, Qujiamiao Village Cross-Gaonan Railway Super Bridge, Mozishi Village Luxi River Super Bridge.

CDWZQ-9: The length of the main line is 26.809km, 32 bridges/12.241km, 42 roadbeds/8.013km, 12 tunnels/6.555km, 352 holes for box girder frame, including 348 holes for box girder frame in this bidding section, CDWZQ -8 standard Nanchong Jialingjiang Bridge box girder frame with 4 holes, double-block ballastless ballast bed and sleeper transportation and installation 53.618km.

The key control projects are: Yanshan Village Cross-Yanshan Avenue Super Bridge, Huanghua Village Heshu River Super Bridge, Chuanzumiao Reservoir Bridge, Shuanggongqiao Village Super Bridge, and Yanshanzhai Tunnel. Key words: engineering construction information, engineering news, engineering construction

Planned construction period: 1826 calendar days, the planned start date is October 1, 2022, and the planned completion date is September 30, 2027.

Submission of tender documents

The deadline for submitting bidding documents is 10:30 on September 8, 2022. Bidders should submit electronic bidding documents through the Beijing Engineering Construction Public Resources Trading Platform before the deadline for bidding. If the bid is made by a consortium, the leader of the consortium shall submit the electronic bidding documents.Editor/Zhao E