CN112228123A - Arch mounting machine installation arch construction method applied to large-section arch - Google Patents
Arch mounting machine installation arch construction method applied to large-section arch Download PDFInfo
- Publication number
- CN112228123A CN112228123A CN202011170706.4A CN202011170706A CN112228123A CN 112228123 A CN112228123 A CN 112228123A CN 202011170706 A CN202011170706 A CN 202011170706A CN 112228123 A CN112228123 A CN 112228123A
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- Prior art keywords
- arch
- installing
- section
- construction method
- arm
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
Abstract
The invention relates to the technical field of tunnel construction, in particular to a construction method for installing an arch center by an arch center installing machine applied to a large-section. The method comprises the following steps: s1, construction preparation; s2, switching a driving mode, and lifting the supporting oil cylinder; s3, inspecting an excavation surface, and removing dangerous stones; s4, measuring and paying off; s5, loading connecting ribs and reinforcing mesh sheets; s6, lifting a steel arch frame; s7, splicing the arch frames in the air; s8, arch centering and detecting; s9, welding connecting ribs and reinforcing mesh sheets; and S10, finishing the installation of the arch, and withdrawing the three-arm arch installing machine from the working surface. The construction method is high in safety, high in arch mounting precision and good in construction effect, and effectively improves the construction effect of the large-section arch. The invention is mainly applied to the installation and construction of the large-section arch center.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a construction method for installing an arch center by an arch center installing machine applied to a large-section.
Background
At present, in domestic tunnel construction, because almost no mechanical equipment is available in the tunnel arch mounting process in China, a simple rack is self-made on site for construction, the edge protection is not in place, the rack lacks the strength and stability checking calculation, the rack is dragged to run by a loader, the stability of the rack is seriously influenced, and the potential safety hazard is large; the handling, lifting and mounting of the arch frame all adopt manual operation, and the labor intensity of workers is high; during the installation process of the arch frame, operators are exposed to the non-supporting sections after the tunnel is excavated, particularly to the IV-level surrounding rock sections and the V-level surrounding rock sections, the excavated surface has frequent rock block falling, the safety risk is high, and a set of safe, stable and efficient arch frame construction method is lacked.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the arch installing machine installation arch construction method applied to the large-section arch, which reduces the construction safety risk, improves the mechanization degree of the tunnel and reduces the labor intensity of constructors.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a construction method for installing an arch center by an arch center installing machine applied to a large-section arch center comprises the following steps:
s1, construction preparation;
s2, switching a driving mode, and lifting the supporting oil cylinder;
s3, inspecting an excavation surface, and removing dangerous stones;
s4, measuring and paying off;
s5, loading connecting ribs and reinforcing mesh sheets;
s6, lifting a steel arch frame;
s7, splicing the arch frames in the air;
s8, arch centering and detecting;
s9, welding connecting ribs and reinforcing mesh sheets;
and S10, finishing the installation of the arch, and withdrawing the three-arm arch installing machine from the working surface.
In step S1, before the arch is installed, all the materials required for installing the arch are transported to the working area, stacked in categories, and the three-armed arch installing machine is driven to the working surface to be in place.
In step S2, before the arch is installed, the diesel engine of the three-arm arch installing machine is turned off, the power is turned on, the electric motor is turned on, the electric drive is switched to raise the front-section support cylinder, and the device is leveled.
In the step S3, after the device is in place, the arch installing personnel respectively operate the three operating platforms of the three-arm arch installing machine, closely check the excavated surface, and process the underexcavated and loosened dangerous stones.
In step S4, a surveying staff uses a total station to measure and determine the arch mounting position on the excavation surface, and sets a control point.
In step S5, the reinforcing mesh, the connecting ribs, the connecting bolts, and the welding tongs, the welding rods, and the wrench of the electric welding machine required for installing the arch are loaded in the operation basket of the three-arm arch installing machine.
In step S6, the steel arch to be installed is transported to the operation site and should be spliced into the arch section and the two side wall sections. The middle main arm of the three-arm arch mounting machine grabs and lifts the arch of the arch section, the auxiliary arms at the two sides respectively lift the arch of the wall sections at the two sides, the arch to be mounted is lifted to the assembly position, and then the air splicing is carried out.
In step S7, during the abutment of the arch, the middle main arm must be kept stationary, and the grasping and lifting pliers are locked.
In the step S8, the laser pen and the steel tape are used to perform preliminary positioning on the arch according to the measurement control points, after the preliminary positioning, the arch is temporarily fixed, the operators on the auxiliary arms on both sides loosen the clamp and move the large arm, the measurement team performs precise positioning on the arch, and the measurement team checks and adjusts the relevant parameters such as the arch spacing, the verticality, the center line position, the arch footmarks on both sides and the like in sequence, and adjusts the parameters in place one by one to perform precise positioning.
In step S9, after the adjustment of the arch frame is completed, the arch frame is permanently fixed, the main arm clamp is loosened, and the operator in the three operation baskets welds the connecting ribs and lays and hangs the reinforcing mesh sheets.
Compared with the prior art, the invention has the beneficial effects that:
the arch frame is lifted and assembled by adopting a three-arm arch frame assembling machine, and workers assist in installing screws, reinforcing steel bar meshes and connecting reinforcing steel bars, so that the labor intensity is low; in the installation process of the arch frame, an operator operates in the operation basket with safety protection, when the arch frame is lifted, all the operators are positioned at the lower part of the completed primary support, and do not need to enter an unsupported section, so that the operation environment is better, and the safety risk is low; when the arch frame is lifted and adjusted in position, an operator can randomly reach any position of the arch frame to control the arch frame at a short distance, and the installation precision of the arch frame is high; the whole section surface of the arch center is installed at one time, and the reinforcing mesh is integrally arranged, so that the lap joint of the reinforcing mesh is ensured. The construction method is high in safety and good in construction effect, and effectively improves the construction effect of the large-section arch center.
Drawings
FIG. 1 is a construction flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a construction method for installing an arch center by an arch center installing machine applied to a large-section arch center comprises the following steps:
s1, construction preparation;
s2, switching a driving mode, and lifting the supporting oil cylinder;
s3, inspecting an excavation surface, and removing dangerous stones;
s4, measuring and paying off;
s5, loading connecting ribs and reinforcing mesh sheets;
s6, lifting a steel arch frame;
s7, splicing the arch frames in the air;
s8, arch centering and detecting;
s9, welding connecting ribs and reinforcing mesh sheets;
and S10, finishing the installation of the arch, and withdrawing the three-arm arch installing machine from the working surface.
Preferably, in step S1, before the arch is installed, all the materials required for arch installation are transported to the working area, sorted and stacked, and the three-armed arch installing machine is driven to the working surface to be in place.
Preferably, in step S2, before the arch is installed, the diesel engine of the three-armed arch installing machine is turned off, the power is turned on, the electric motor is turned on, and the operation is switched to electric drive and electric drive, so that no dust is discharged from the equipment, the air quality in the tunnel is not affected, and the noise in the operation process is relatively low, thereby facilitating communication between people. Lifting the front supporting oil cylinder and leveling the equipment.
Preferably, in step S3, after the device is in place, the arch installing personnel respectively operate the three operating platforms of the three-arm arch installing machine, closely inspect the excavated surface, and process the underexcavated and loosened dangerous stones. The operating personnel operate in the three big arm operation baskets, and the danger elimination process has small safety risk. The surrounding rock is observed in a short distance, so that dangerous stones can be completely and thoroughly removed.
Preferably, in step S4, the surveying staff uses a total station to measure and determine the installation position of the arch frame on the excavation surface, and sets the control point. The front worker can operate the basket by using the three large arms, and can set the control point at any position of the tunnel face, so that the front worker can conveniently use the arch center in the installation process.
Preferably, in step S5, the materials such as reinforcing mesh, tie bars, tie bolts, etc. required for installing the arch, and the welding tongs, welding rods, wrenches, etc. required for welding machines are loaded in the operating basket of the three-armed arch installing machine.
Preferably, in step S6, the steel arch to be installed is transported to the operation site and should be spliced into the arch section and the two side wall sections. The middle main arm of the three-arm arch mounting machine grabs and lifts the arch of the arch section, the auxiliary arms at the two sides respectively lift the arch of the wall sections at the two sides, the arch to be mounted is lifted to the assembly position, and then the air splicing is carried out.
Preferably, in step S7, during the abutment of the arch, the middle main arm must be kept stationary, and the grasping and lifting pliers are locked to prevent the arch from sliding and falling. The assembling process of the arch frame is completed by two auxiliary arm operators, and in the installation process of the arch frame, the operators in the three-arm arch frame installing machine operation basket need to pay attention to the oil pipe when the operation basket rotates, so that the extrusion damage is prevented.
Preferably, in step S8, the laser pen and the steel tape are used to perform preliminary positioning on the arch according to the measurement control point, after the preliminary positioning, the arch is temporarily fixed, the operators on the two side auxiliary arms loosen the clamp and move the large arm, the measurement team performs precise positioning on the arch, and the measurement team checks and adjusts the relevant parameters such as the arch spacing, the verticality, the center line position, the arch footmarks on the two sides and the like in sequence, and adjusts the parameters in place one by one, so as to perform precise positioning.
Preferably, in step S9, after the adjustment of the arch is completed, the arch is permanently fixed, the main arm clamp is loosened, and the operator in the three operation baskets welds the connecting ribs and lays and hangs the reinforcing mesh sheets.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (10)
1. A construction method for installing an arch center by an arch center installing machine applied to a large-section arch center is characterized by comprising the following steps:
s1, construction preparation;
s2, switching a driving mode, and lifting the supporting oil cylinder;
s3, inspecting an excavation surface, and removing dangerous stones;
s4, measuring and paying off;
s5, loading connecting ribs and reinforcing mesh sheets;
s6, lifting a steel arch frame;
s7, splicing the arch frames in the air;
s8, arch centering and detecting;
s9, welding connecting ribs and reinforcing mesh sheets;
and S10, finishing the installation of the arch, and withdrawing the three-arm arch installing machine from the working surface.
2. The arch installing arch construction method applied to the large-section arch according to claim 1, wherein: in step S1, before the arch is installed, all the materials required for installing the arch are transported to the working area, stacked in categories, and the three-armed arch installing machine is driven to the working surface to be in place.
3. The arch installing arch construction method applied to the large-section arch according to claim 1, wherein: in step S2, before the arch is installed, the diesel engine of the three-arm arch installing machine is turned off, the power is turned on, the electric motor is turned on, the electric drive is switched to raise the front-section support cylinder, and the device is leveled.
4. The arch installing arch construction method applied to the large-section arch according to claim 1, wherein: in the step S3, after the device is in place, the arch installing personnel respectively operate the three operating platforms of the three-arm arch installing machine, closely check the excavated surface, and process the underexcavated and loosened dangerous stones.
5. The arch installing arch construction method applied to the large-section arch according to claim 1, wherein: in step S4, a surveying staff uses a total station to measure and determine the arch mounting position on the excavation surface, and sets a control point.
6. The arch installing arch construction method applied to the large-section arch according to claim 1, wherein: in step S5, the reinforcing mesh, the connecting ribs, the connecting bolts, and the welding tongs, the welding rods, and the wrench of the electric welding machine required for installing the arch are loaded in the operation basket of the three-arm arch installing machine.
7. The arch installing arch construction method applied to the large-section arch according to claim 1, wherein: in step S6, the steel arch to be installed is transported to the operation site, and should be spliced into an arch section and two side wall sections,
the middle main arm of the three-arm arch mounting machine grabs and lifts the arch of the arch section, the auxiliary arms at the two sides respectively lift the arch of the wall sections at the two sides, the arch to be mounted is lifted to the assembly position, and then the air splicing is carried out.
8. The arch installing arch construction method applied to the large-section arch according to claim 1, wherein: in step S7, during the abutment of the arch, the middle main arm must be kept stationary, and the grasping and lifting pliers are locked.
9. The arch installing arch construction method applied to the large-section arch according to claim 1, wherein: in the step S8, the laser pen and the steel tape are used to perform preliminary positioning on the arch according to the measurement control points, after the preliminary positioning, the arch is temporarily fixed, the operators on the auxiliary arms on both sides loosen the clamp and move the large arm, the measurement team performs precise positioning on the arch, and the measurement team checks and adjusts the relevant parameters such as the arch spacing, the verticality, the center line position, the arch footmarks on both sides and the like in sequence, and adjusts the parameters in place one by one to perform precise positioning.
10. The arch installing arch construction method applied to the large-section arch according to claim 1, wherein: in step S9, after the adjustment of the arch frame is completed, the arch frame is permanently fixed, the main arm clamp is loosened, and the operator in the three operation baskets welds the connecting ribs and lays and hangs the reinforcing mesh sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011170706.4A CN112228123A (en) | 2020-10-28 | 2020-10-28 | Arch mounting machine installation arch construction method applied to large-section arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011170706.4A CN112228123A (en) | 2020-10-28 | 2020-10-28 | Arch mounting machine installation arch construction method applied to large-section arch |
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| Publication Number | Publication Date |
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| CN112228123A true CN112228123A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011170706.4A Pending CN112228123A (en) | 2020-10-28 | 2020-10-28 | Arch mounting machine installation arch construction method applied to large-section arch |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH601642A5 (en) * | 1974-09-10 | 1978-07-14 | Beton & Monierbau Ag | |
| CN105952474A (en) * | 2016-07-08 | 2016-09-21 | 山东大学 | Rapid construction method for primary support of confined concrete of large-section tunnel |
| CN107859060A (en) * | 2017-09-24 | 2018-03-30 | 金华职业技术学院 | A kind of mechanical underground parking of inclined shaft |
| CN108131153A (en) * | 2018-01-22 | 2018-06-08 | 中铁科工集团轨道交通装备有限公司 | A kind of multifunctional tunnel working vehicle |
| US20180291736A1 (en) * | 2016-07-08 | 2018-10-11 | Shandong University | High-strength confined concrete support system for underground tunnel |
-
2020
- 2020-10-28 CN CN202011170706.4A patent/CN112228123A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH601642A5 (en) * | 1974-09-10 | 1978-07-14 | Beton & Monierbau Ag | |
| CN105952474A (en) * | 2016-07-08 | 2016-09-21 | 山东大学 | Rapid construction method for primary support of confined concrete of large-section tunnel |
| US20180291736A1 (en) * | 2016-07-08 | 2018-10-11 | Shandong University | High-strength confined concrete support system for underground tunnel |
| CN107859060A (en) * | 2017-09-24 | 2018-03-30 | 金华职业技术学院 | A kind of mechanical underground parking of inclined shaft |
| CN108131153A (en) * | 2018-01-22 | 2018-06-08 | 中铁科工集团轨道交通装备有限公司 | A kind of multifunctional tunnel working vehicle |
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Application publication date: 20210115 |