Recently, constructed by China Railway Construction Engineering Group

Shipping Trade Finance Headquarters Building Project (No. 1 Nanjing Road)

after 20 days and nights of continuous effort

ushered in a new milestone in project construction

installation of prefabricated steel supports for the ultra-deep foundation pit completed

prefabricated "Bailey beam" foundation pit steel ramp successfully opened to traffic

Shipping Trade Finance Headquarters Building Project

the foundation pit engineering has a complex shape and relatively deep excavation depth

there is little space within the red line that can be used as material storage yards and construction access routes

the reasonable arrangement of the earthwork transport ramp

has become the key to implementing the foundation pit engineering

the project construction team conducted innovative research and organized expert demonstration

integrating multiple factors such as construction, environmental protection, cost reduction and efficiency improvement

and ultimately decided to adopt a prefabricated Bailey beam steel ramp

to replace the traditional earth ramp

to ensure foundation pit earth removal and support construction

the project erected an 8-meter-wide steel ramp on the north side of the foundation pit

the bridge has a total length of 63 meters and a maximum span of 10 meters

the superstructure adopts the quickly assembled and disassembled

"321" type Bailey truss + section steel distribution beam + steel plate

and an orthotropic deck system composed of I-beams

(prefabricated bridge deck)

between the bridge deck distribution beam and the Bailey panels

fixed by U-shaped dovetail clamps

the substructure adopts steel pipe pile foundations

the maximum height of the steel trestle is 22.8 meters

the trestle pile base slab penetrates 3.5 meters into rock

the bearing capacity meets the requirements for vehicles under 60T entering and exiting the foundation pit

as the only main traffic artery on site

it not only satisfies the earthwork transport route

but also ensures simultaneous construction of the support around the foundation pit

accelerating earthwork transport efficiency and shortening the time for closing the earthwork ramp

it is estimated that the underground phase can effectively shorten the construction period by 90 days

effectively improving the project's green construction level

Shipping Trade Finance Headquarters Building Project

involves re-excavation and reinforcement construction for an existing ultra-deep foundation pit

the original foundation pit support has far exceeded its design service life

due to complex geological conditions on site, there is a risk of flowing sand and sand boil

in order to fully utilize the original foundation pit support system

according to the expert demonstration opinions on the foundation pit, at the -6.5m elevation

prefabricated steel supports were added on the basis of the existing prestressed anchor cables

safeguarding construction safety

▲Holding a scheme seminar

to ensure the safety of the foundation pit

the project team added steel internal bracing at the corners of the foundation pit

the internal bracing support structure includes 13 steel supports

41 steel lattice column piles

arranged at the weak support locations at the four corners of the foundation pit

the steel supports are connected by section steel tie beams

and steel lattice columns and column piles are provided for support

forming an overall solid and stable slope support structure

axial force sensors are installed at the ends of the steel supports

real-time monitoring of prestress values through the smart construction site platform

creating a safe, green, and efficient

informatized smart construction site

safeguarding the entire foundation pit construction process

Shipping Trade Finance Headquarters Building Project

located at No. 1 Nanjing Road, Shinan District, Qingdao

with obvious geographical advantages

with a total construction area of 118,700 square meters

will build a 248-meter super high-rise

integrating commercial offices and residences

creating a new business card for the city's image

Shipping Trade Finance Headquarters Building Project

the design concept is derived from "setting sail and soaring with wings"

the design inspiration comes from a sailboat

symbolizing that Qingdao's development is full of vitality and vigor, setting sail

as a rare prime plot in the city center

after completion, the project will become a new landmark of Qingdao

highlighting the visual identity of the city scale

building a diversified urban space

▲Concept design drawing

Next, China Railway Construction Engineering Group

will fully leverage its advantages as a "large public building expert"

keep a close eye on task objectives

strengthen responsibility and commitment, and strive to overcome difficulties

strive to advance project construction progress

ensure the successful completion of all targets and tasks in 2023

and contribute to Qingdao's urban development