CN-121993226-A - Mobile trolley tool and method for lining concrete construction of extra-large-section underground cavern

CN121993226ACN 121993226 ACN121993226 ACN 121993226ACN-121993226-A

Abstract

The invention discloses a movable trolley tool for construction of lining concrete of an oversized-section underground cavity and a construction method, wherein the tool comprises a track system formed by a track beam and a track and an integral trolley body walking on the track, the trolley comprises a lower bearing frame body, a portal frame structure, an upper bearing frame body, side wall templates, a top arch arc-shaped template, a hydraulic lifting adjusting system, an operation platform/stairs/guardrails and a template lifting system, the side wall templates are connected and positioned with the trolley frame body through adjusting spiral stay bars, the top arch templates are lifted/fallen back through the hydraulic system to realize quick fine adjustment, and the side wall templates can be integrally circulated by the lifting system. The invention has the advantages of high template positioning precision, high warehouse separation turnover efficiency, stable structure and perfect safety protection during pouring, reduces the template disassembly and assembly workload and reduces the overhead operation risk.

Inventors

DANG PENGLIANG
Hong Guangting
ZHOU YUEFEI
ZOU DEHAI
Tang Guocong
LI XINGJUN
HU JIAWEI
Xiao cunjing
WANG ZHUN
ZENG LIN

Assignees

中国水利水电第十四工程局有限公司

Dates

Publication Date: 20260508
Application Date: 20260116

Claims (7)

1. A movable trolley tool for construction of lining concrete of an extra-large-section underground cavity is characterized by comprising a track system and an integral movable trolley body arranged on the track system, wherein the track system comprises a track beam (1) and a track (2) arranged on the track beam (1), the track beam (1) is fixed on a bottom plate of the underground cavity, the track (2) extends along the axial direction of the cavity and provides a rolling bearing surface for trolley walking, and the trolley body comprises a lower bearing frame body, a portal structure arranged on the lower bearing frame body, an upper bearing frame body arranged above the portal structure, a template system, a trolley body and a trolley body, wherein the upper bearing frame body is arranged above the portal structure, The lower bearing frame body comprises a main lower longitudinal beam (5) and an auxiliary lower longitudinal beam (6) which are axially arranged along a cavity, the main lower longitudinal beam (5) is positioned below the auxiliary lower longitudinal beam (6) and is fixedly connected with the auxiliary lower longitudinal beam (6), the main lower longitudinal beam (5) is arranged above a traveling system (4) and is fixedly connected with the traveling system (4), the traveling system (4) is arranged at the bottom of a trolley body and comprises traveling wheels (3), the traveling wheels (3) and a track (2) are matched to roll so as to enable the trolley body to move along the cavity on the track (2) in a traveling way, the portal frame structure is a plurality of portal frame units which are axially arranged along the cavity at intervals, each portal frame unit comprises a pair of portal frame columns (7) which are horizontally arranged at intervals, the lower ends of the portal frame columns (7) are fixedly connected with the auxiliary lower longitudinal beam (6), a portal frame cross beam (9) is arranged between the upper parts of two portal frame columns (7) in the same portal frame unit, the portal frame cross beams (9) are arranged between the portal frame cross beams (8) and the portal frame cross beams (8) are arranged between the portal frame units (8), the portal cross beam (10) is arranged along the axial direction of the cavity, the portal upright post (7) and the portal cross beam (10) are respectively and fixedly connected with two ends of the portal upright post diagonal bracing (11), the portal upright post diagonal bracing (11) is arranged in a lateral vertical plane along the axial direction of the cavity, the upper bearing frame body is arranged at a top node of the portal structure and is positioned above an uppermost portal truss cross beam (9) and extends continuously along the axial direction of the cavity, the upper bearing frame body comprises upper truss girders (13) which are symmetrically arranged left and right and upper longitudinal girders (14) arranged in a vault area, the lower nodes of the upper truss girders (13) are fixedly connected with the top node of the portal structure, the upper longitudinal girders (14) are arranged along the axial direction of the cavity and are positioned above or in an inner side area of the upper truss girders (13), the bottom of the upper bearing frame body is connected with a hydraulic system, the tops of the upper truss girders (26) are connected with the arc-shaped templates, an upper longitudinal girder (13) which is arranged between two adjacent upper truss girders (13) and an upper longitudinal girder (14) which is arranged in a left-right symmetrical manner, the upper truss girders (15) are arranged along the axial direction of the cavity, and the cross girders (15) are arranged along the horizontal girders of the horizontal cross beam system respectively A side wall template (19) corresponding to the side wall lining part and arranged on the upper part of the trolley body, The side wall template (19) is connected with the trolley body through a side wall template supporting rod (20), one end of the side wall template supporting rod (20) is connected with the side wall template (19), the other end of the side wall template supporting rod (20) is connected with the trolley body, the hydraulic system is arranged between the upper bearing frame body and the top arch arc template (26) and comprises an oil cylinder heightening seat (18) connected with the trolley body, a hydraulic oil cylinder of the hydraulic system is fixedly connected with an upper longitudinal beam (14) through the oil cylinder heightening seat (18) to lift or fall back the top arch arc template (26), and the operation and safety protection system comprises a side wall operation platform (23), An end wall working platform (24), The side wall working platform (23) is arranged on the lateral outer side of the trolley body and is positioned on the outer side of a working area corresponding to the side wall template (19), the side wall working platform (23) is axially arranged along a grotto, the inner side of the side wall working platform is fixedly connected with the trolley frame body, the end wall working platform (24) is arranged on the outer side of the end part of the trolley body and is fixedly connected with the trolley frame body, the end wall working platform (24) is arranged at least two different elevations in the height direction, the stair (22) is arranged in or near the side part of the trolley frame body, the upper end and the lower end of the stair (22) are fixedly connected with the lower passing surfaces of the side wall working platform (23) and the lower passing surfaces of the end wall working platform (24), and the guardrail (25) is fixedly arranged at the outer side edges of the side wall working platform (23) and the end wall working platform (24) and extends along the outer edges of the platform to form a protection boundary.
2. The movable trolley tool according to claim 1, wherein the portal cross links (10) are arranged at least two different elevations of the portal upright posts (7) and are respectively connected with nodes of two adjacent portal units at corresponding elevations, and the portal upright post diagonal braces (11) are arranged in a crossing manner between the two adjacent portal units and are respectively connected with the nodes of the adjacent portal upright posts (7) and the portal cross links (10).
3. The mobile trolley tooling of claim 1, wherein the upper load bearing frame further comprises a bracket truss girder (16) and a bracket column truss girder (17), the bracket column truss girder (17) being disposed transversely and fixedly connected to the bracket truss girder (16) by a bracket column, the bracket truss girder (16) being located adjacent to the cavern roof arch region and providing support for the roof arch form (26).
4. The mobile trolley tooling of claim 1 wherein the side wall form brace (20) is an adjustable screw brace.
5. The mobile trolley tooling according to claim 1, further comprising a side wall form lifting system arranged in the roof arch area of the cavity and above the trolley, comprising rail beam uprights (27) arranged on both sides of the cavity, rail beams (28) supported by the rail beam uprights (27) and crossing the cavity, electric hoists (29) moving along the rail beams (28), and slings (30) connected to the electric hoists (29) and hanging downwards, wherein the slings (30) are connected to the side wall form (19).
6. The movable trolley tool according to claim 1, wherein the trolley body is provided with a ground supporting jack, the ground supporting jack comprises a joist ground supporting jack (12) and a trolley ground supporting jack (21), the joist ground supporting jack (12) is axially arranged on the upper bearing frame body along the cavity and is respectively connected with an upper longitudinal truss cross-link (15) of the upper bearing frame body, and the trolley ground supporting jack (21) is axially arranged below the lower bearing frame body along the cavity and is respectively connected with a main lower longitudinal beam (5) and a bottom plate of the underground cavity.
7. A method for carrying out lining concrete construction of an oversized-section underground cavity by using the movable trolley tooling as claimed in any one of claims 1 to 6, which is characterized by comprising the following steps: Step1, track construction, namely pouring a track beam (1) on a bottom plate of a cavity and paving a track (2), and controlling the levelness and verticality of the track to ensure stable and smooth running of the trolley; Step 2, assembling the frame below the arch of the trolley, namely completing assembling of travelling wheels, a lower longitudinal beam, a portal frame, an inclined strut, supporting legs, a lifting system, a crawling ladder and an operation platform by adopting hoisting fit to form the frame below the arch; Step 3, checking and accepting the traveling system, the hydraulic system, the component connection, the perpendicularity of the portal and the safety protection facility, and putting the traveling system, the hydraulic system, the component connection and the portal into use after being qualified; Step 4, constructing side wall concrete below the arch part, namely assembling side wall templates (19) into a whole on the ground, hoisting the side wall templates to a first warehouse, fixing the side wall templates (19) firmly through side wall template supporting rods (20) and symmetrically pouring the side wall concrete, removing the side wall template supporting rods (20) after the concrete reaches the age, hoisting the side wall templates (19) by using a side wall template hoisting system, and carrying out next-stage construction by using a traveling trolley until the side wall lining is completed; And 5, installing a top arch formwork and constructing top arch concrete, namely installing a top arch formwork supporting system and a top arch arc formwork (26) by adopting a top anchor arranged on a top arch of an automobile crane and a tunnel, walking a trolley to a pouring section, pouring the top arch concrete after adjusting the top arch formwork to a designed position by a hydraulic system, demoulding after the concrete reaches an age, and walking the trolley to the next pouring section until all top arch pouring is completed.

Description

Mobile trolley tool and method for lining concrete construction of extra-large-section underground cavern Technical Field The invention belongs to the technical field of underground engineering construction, and particularly relates to a movable trolley tool and a method for lining concrete construction of an extra-large-section underground cavity. Background In the construction of an underground cavity with an extra large section, lining concrete construction is a work with high technical requirements and high complexity, especially in a large underground cavity with a height of more than 30 meters. The traditional construction method generally adopts a full-hall steel pipe supporting frame to carry out lining concrete construction. In particular, in an underground cavity with an extra large section and a height of more than 30 meters, the construction method has some remarkable defects. Firstly, a large amount of steel pipe materials are required for the full-hall steel pipe support system, and a large amount of labor force is required to be input in the construction process to set up and dismantle the support. The support is set up and needs to be carried out according to the construction progress piecewise layer by layer, has not only caused high material cost and labour cost, and construction cycle is longer moreover, and progress control is difficult. In the underground cavern with larger depth and narrow space, the construction and the dismantling of the bracket occupy a great amount of construction time, and the progress of the whole project is influenced. Secondly, the traditional stent method also has a great potential safety hazard. During high-altitude operations, constructors face a high risk. Due to limited stability and supporting capacity of the bracket system, when unstable geological conditions are met, the bracket is easy to be unstable, and construction safety is caused. In particular in large diameter, deeply buried underground caverns, conventional bracing methods do not provide sufficient bracing force, further increasing construction risks. In addition, the conventional bracket system has a limitation in the management of the construction passageway. Because the bracket system occupies a large amount of space, the smoothness of the operation platform and the bottom passage cannot be ensured at the same time, so that the congestion phenomenon of the construction site is caused, the operation efficiency is further influenced, and the construction period is prolonged. The traditional concrete construction method generally adopts single-layer gradual construction, and when the template is assembled and concrete is poured, the working platform needs to be frequently moved, so that the working efficiency is low and the high-altitude operation is frequent. Because synchronous hoisting of the templates cannot be realized, construction progress is difficult to coordinate, and management difficulty and construction risk are increased. Although some technical solutions have been proposed to improve the conventional construction method, most of the solutions have not been able to effectively solve the above problems in construction, especially in terms of improving construction efficiency, ensuring safety, reducing labor and material consumption. Therefore, a new construction tool and method are needed to improve construction efficiency, reduce construction risk and save costs. Disclosure of Invention The invention aims to provide the movable trolley tool and the method for construction of the lining concrete of the underground cavity with the extra large section, which have the advantages of high positioning precision of the templates, high turnover efficiency of the sub-bins, stable structure and perfect safety protection during pouring, and can reduce the workload of assembling and disassembling the templates and reduce the risk of high-place operation. The technical scheme of the invention is that the movable trolley tool for construction of the lining concrete of the underground cavity with the extra large section comprises a track system and an integral movable trolley body arranged on the track system, wherein the track system comprises a track beam and a track arranged on the track beam, the track beam is fixed on a bottom plate of the underground cavity, extends along the axial direction of the cavity and provides a rolling bearing surface for trolley travelling, and the trolley body comprises a lower bearing frame body, a portal frame structure arranged on the lower bearing frame body, an upper bearing frame body arranged above the portal frame structure, a template system, a rolling bearing surface and a lower bearing frame body arranged above the portal frame structure, A hydraulic system and an operation and safety protection system; the lower bearing frame body comprises a main lower longitudinal beam and an auxiliary lower longitudinal beam which are axially arranged along the c