To achieve synchronous construction of open tunnel
boring machine(TBM) excavation and castinplace
inverted arch, improve the quality of castinplace inverted arch lining, and shorten the project period, the
authors designed and developed construction equipment for the entire castinplace inverted arch with large span based
on the boundary conditions of castinplace inverted arch construction in long hydraulic tunnels bored by
open TBMs. A detailed design of the construction equipment for the entire castinplace inverted arch is conducted based on
the functional requirements, main beam, support legs, front and rear climbing
rails, walking system, and inverted arch lining. Finally, an innovative idea is
proposed to raise the main bridge crane road surface and set up 11 12mlong functional operation areas under the
main bridge, which is fully validated on site. The engineering practice
achieves the following results: (1) The main bridge support system, walking
drive system, and formwork pouring system of the entire process of castinplace inverted arch equipment
preliminarily exhibit a good applicable effect. (2) The construction equipment
for the entire process of castinplace inverted arch has various advantages such as high assembly
efficiency, easy overall movement, high compatibility with the onsite construction process, adequate operating space, and low labor
intensity. This helps in realizing an advancing length of 240 m per month and
improving the castinplace
technology of the inverted arch by TBM construction. However, the equipment
occupies a certain space, thereby limiting construction traffic and material
transport, which needs to be further studied.
XUE Jiangsong
,
YIN Jiankun
,
CHEN Hongming
.
Design and Application of Construction Equipment for
Entire Process of CastinPlace
Inverted Arch in Central Yunan WaterDiversion Project in China
[J]. Tunnel Construction, 2024
, 44(3)
: 605
-616
.
DOI: 10.3973/j.issn.2096-4498.2024.03.018
