Full-hydraulic crawler-type self-propelled trestle and construction method thereof

Abstract

The invention discloses a full-hydraulic crawler-type self-propelled trestle and a construction method thereof. The trestle comprises a main bridge, a front approach bridge and a rear approach bridge,and further comprises two short-side walls symmetrically arranged at the left and right and an inverted arch backfill construction template, wherein the main bridge comprises two main beams symmetrically arranged at the left and right, a plurality of distributive girders and a bridge floor structure, and the short-side walls and the inverted arch backfill construction template comprise forming templates and template supporting frames; when a tunnel is constructed, the full-hydraulic crawler-type self-propelled trestle is used for constructing the tunnel bottom lining and inverted arch backfill layer of the constructed tunnel from back to front separately by multiple tunnel sections. The full-hydraulic crawler-type self-propelled trestle and the construction method thereof have the advantages that the design is reasonable, the construction is simple and convenient, the use effect is good, self-propelled stable walking can be performed in the tunnel by adopting a crawler-type walking mechanism, the synchronous construction of the tunnel inverted arch, short-side walls and inverted arch backfill can be achieved, tunnel digging and deslagging construction can be simultaneously performed, the tunnel construction efficiency can be greatly improved, the construction quality of the tunnel inverted arch, short-side walls and inverted arch backfill can be ensured, and the construction process is safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a fully hydraulic crawler type self-propelled trestle and a construction method. Background technique [0002] The secondary lining is the molded concrete or reinforced concrete lining applied inside the primary support in tunnel engineering construction, and forms a composite lining together with the primary support. The secondary lining usually adopts the lining that supports the entire section of the tunnel hole and includes the tunnel arch wall lining that supports the tunnel arch wall and the tunnel inverted arch that is located directly below the tunnel arch wall lining. When the lining is constructed, the tunnel arch wall lining and the tunnel inverted arch are constructed separately, and the tunnel arch wall lining is usually constructed by a tunnel secondary lining trolley (also called a secondary lining trolley, lining trolley or trolley). Tunne...

AI Technical Summary

Problems solved by technology

Since the inverted arch filling should be poured after the inverted arch concrete is finally set, and the arc shape of the inverted arch must be guaranteed, this requires that the inverted arch and the low side wall must be formed with the help of formwork, otherwise the following problems will occur in the inverted arch construction: first of all, it cannot Well formed; secondly, difficult to vibrate as the concrete tends to slide towards the bottom once vibrated

[0009] First, the simple trestle cannot realize automatic walking, and must borrow external mechanical equipment to move;

[0010] Second, the simple trestle can not realize the inverted arch pouring construction and tunnel excavation slag at the same time, and its work efficiency is low;

[0011] Third, the function is single. Generally, simple trestle bridges are not equipped with inverted arch backfill formwork, and only inverted arch pouring can be realized; invert arch backfill requires additional formwork, and the construction efficiency is very low;

[0012] Fourth, the safety protection facilities of the simple trestle bridge are poor, and the traffic safety is poor. In the complex tunnel construction, its safety hazard is great;

[0013] Fifth, the simple trestle cannot adapt to complex working conditions, and the construction period is long

[0014] It can be seen from the above that the current construction progress of the tunnel inverted arch itself is relatively slow, the construction process is complicated, and the construction efficiency is low

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