CN113339003A - Construction method of tunnel integrated arch sheathing trolley - Google Patents
Construction method of tunnel integrated arch sheathing trolley Download PDFInfo
- Publication number
- CN113339003A CN113339003A CN202110573400.1A CN202110573400A CN113339003A CN 113339003 A CN113339003 A CN 113339003A CN 202110573400 A CN202110573400 A CN 202110573400A CN 113339003 A CN113339003 A CN 113339003A
- Authority
- CN
- China
- Prior art keywords
- arch
- trolley
- tunnel
- sheathing
- construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 103
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 238000009415 formwork Methods 0.000 claims abstract description 14
- 238000009412 basement excavation Methods 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 238000012423 maintenance Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 15
- 238000013461 design Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000004035 construction material Substances 0.000 claims description 3
- 230000037228 dieting effect Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 2
- 230000007306 turnover Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 6
- 238000007726 management method Methods 0.000 description 6
- 244000070406 Malus silvestris Species 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000357293 Leptobrama muelleri Species 0.000 description 1
- 241000334993 Parma Species 0.000 description 1
- 238000003326 Quality management system Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007728 cost analysis Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a tunnel integrated arch-sleeving trolley construction method, which comprises the following steps: construction preparation, scheme establishment, tunnel control measurement, tunnel opening side slope and upward slope excavation, side slope and upward slope protection, arch sheathing foundation pouring, arch sheathing trolley assembly, arch sheathing concrete pouring, formwork removal and maintenance. According to the tunnel integrated arch sleeving trolley construction method, steel templates at the bottom of an arch sleeving are manufactured in sections according to the size and radian of the arch sleeving, connecting plates are arranged at the end parts and used for connecting and installing adjacent template bolts, and the templates are respectively provided with longitudinal and transverse back ridges, so that the rigidity and strength of the templates are ensured, and an inner mold steel arch frame does not need to be installed; the arch springing section of the arch sheathing internal template is additionally provided with a section steel upright post which is transversely connected with the arch springing section to serve as an arch springing supporting leg, so that the arch springing of the arch sheathing trolley is stably supported and is safe; the main components of the tunnel integrated arch-covering trolley template are connected through bolts, so that the tunnel integrated arch-covering trolley template is quick, simple and convenient to install and dismantle, stable and safe in structure, less in manual investment and quick in construction progress; and the repeated utilization rate is high, and the turnover speed is high.
Description
Technical Field
The invention relates to the technical field of tunnel arch sheathing construction of highways, in particular to a tunnel integrated arch sheathing trolley construction method.
Background
Tunnels are engineering structures buried in the ground and are a form of human use of underground space. The tunnel can be divided into a traffic tunnel, a hydraulic tunnel, a municipal tunnel, a mine tunnel and a military tunnel. The tunnel cover arch is an arch structure which adopts pipe shed advanced support to fix or support the end part of a pipe shed when the construction of a tunnel opening section is carried out.
In the existing highway construction, most tunnel arch sheathing construction is performed by adopting small wooden templates to splice into an arch and then performing mold sealing and pouring, the construction period is long, the processes are multiple, the safety and civilization construction are poor, in addition, the field support is usually supported by a large-diameter steel pipe or channel steel combined structure to support and fix on the virtual soil or slope surface, the support stability is poor, the great potential safety hazard exists, the appearance quality defects of slab staggering, slurry leakage, honeycomb rough surface, poor flatness and the like are easily generated due to the multiple joints and the poor fixing effect of finished products of the arch sheathing, the construction quality, the image and the progress of the arch sheathing are greatly influenced, the current situation of the arch sheathing construction is improved, and the key for further improving the tunnel opening construction is realized.
Disclosure of Invention
The invention aims to provide a method for manufacturing an environment-friendly efficient paint remover, which aims to solve the problems that a large-diameter steel pipe or channel steel combined structure is usually used for supporting and retaining on the deficient soil or slope surface for supporting and fixing on the expressway tunnel arch construction site, the supporting stability is poor, and great potential safety hazards exist.
In order to achieve the purpose, the invention provides the following technical scheme: the tunnel integrated arch sleeving trolley construction method comprises the following steps: construction preparation, scheme establishment, tunnel control measurement, tunnel opening side slope and upward slope excavation, side slope and upward slope protection, arch sheathing foundation pouring, arch sheathing trolley assembly, arch sheathing concrete pouring, formwork removal and maintenance.
Preferably, the construction preparation mainly comprises the operations of purchasing and accepting a trolley template and construction materials, formulating a scheme, checking drawings, lofting and checking a set arch contour line, setting up a cave entrance construction platform and the like.
Preferably, the tunnel control measurement includes plane control and elevation control.
Preferably, the excavation of the hole side and upward slope comprises construction of a tunnel top intercepting ditch.
Preferably, the side and top slope protection comprises bolting, hanging reinforcing mesh and spraying concrete.
Preferably, the arch foundation pouring bearing capacity detection is carried out in the arch foundation pouring process.
Preferably, the assembly construction sequence of the arch-set trolley is as follows: measuring and paying off, symmetrically lowering legs at the bottoms of two sides of the trolley, splicing the bottom die and the vertical support from bottom to top, erecting the section steel and the guide pipe, splicing the outer die, and supporting and fixing the inclined support.
The invention discloses a construction method of an integrated arch-sleeving trolley for a tunnel, which comprises the following working methods: the foundation of arch springing at two sides of the cover arch is firstly constructed, concrete is poured in a full groove according to the design size, and then materials such as the inner support, the bottom die and the face plate of the trolley are transported to the site and are quickly connected and assembled by bolts. The assembly process is formed by sleeving two sides of an archThe assembling process is carried out symmetrically from bottom to top, profile steel and an adjusting screw rod are respectively used as vertical and oblique supports when the assembling process is carried out to the arch waist and the arch crown, and a concrete cushion block is additionally arranged at the bottom of the support with smaller contact area to increase the stress area of the support. After the arch sleeving trolley is integrally assembled and molded, a phi 89 steel pipe is used as an inclined strut for arranging and reinforcing the arch sleeving trolley on the outer side. The arch-sleeving trolley template is mainly divided into a bottom template and a face template, the arch waist positions on two sides of the face template and the arch crown positions on the top of the face template are respectively reserved with a concrete die-entering opening of 0.5m multiplied by 0.5m, and concrete pouring is symmetrically and uniformly poured into the die and vibrated from two sides of the arch sleeving to ensure the construction quality of concrete. The arch concrete reaches 2.5Mpand a, removing the template, firstly removing the integral inclined strut at the outer side, then unscrewing the support screw to integrally lift off the inner support of the trolley, then sequentially removing the vertical and inclined struts of the template, and finally disassembling the trolley template from top to bottom. And subsequently, curing the arch concrete, and performing advanced pipe shed drilling operation after the strength meets the conditions.
Compared with the prior art, the invention has the beneficial effects that: according to the tunnel integrated arch sleeving trolley construction method, steel templates at the bottom of an arch sleeving are manufactured in sections according to the size and radian of the arch sleeving, connecting plates are arranged at the end parts and used for connecting and installing adjacent template bolts, and the templates are respectively provided with longitudinal and transverse back ridges, so that the rigidity and strength of the templates are ensured, and an inner mold steel arch frame does not need to be installed; the arch springing section of the arch sheathing internal template is additionally provided with a section steel upright post which is transversely connected with the arch springing section to serve as an arch springing supporting leg, so that the arch springing of the arch sheathing trolley is stably supported and is safe; the profile steel back edge with the support is additionally arranged on the arch sheathing bottom template back edge and is used for mounting jack support legs or steel pipe support rods, so that the stability and safety of the trolley support are ensured; the fan-shaped steel die with the length of 4m multiplied by 0.9m is adopted as the side template and is installed and fixed through the bolts, so that the rigidity and the flatness of the side template are improved, and the problems of more abutted seams, incompact and large slab staggering of the template are solved; the main components of the tunnel integrated arch-covering trolley template are connected through bolts, so that the tunnel integrated arch-covering trolley template is quick, simple and convenient to install and dismantle, stable and safe in structure, less in manual investment and quick in construction progress; and the repeated utilization rate is high, and the turnover speed is high.
Drawings
Fig. 1 is a schematic structural view of an arch-jacked trolley according to the tunnel-integrated arch-jacked trolley construction method 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.
Referring to fig. 1, the present invention provides a technical solution: the tunnel integrated arch sleeving trolley construction method comprises the following steps: construction preparation, scheme establishment, tunnel control measurement, tunnel opening side slope and upward slope excavation, side slope and upward slope protection, arch sheathing foundation pouring, arch sheathing trolley assembly, arch sheathing concrete pouring, formwork removal and maintenance. The construction preparation mainly comprises the operations of purchasing and checking a trolley template and construction materials, making a scheme, checking drawings, lofting and checking a set arch contour line, setting up a hole construction platform and the like. The tunnel control measurement comprises plane control and elevation control. And the excavation of the side and upward slope of the hole opening comprises the construction of a tunnel top intercepting ditch. The protection of the side and the top slopes comprises anchoring rods, hanging reinforcing mesh and spraying concrete. And (4) detecting the pouring bearing capacity of the arch foundation in the arch foundation pouring process. The assembly construction sequence of the arch-covered trolley is as follows: measuring and paying off, symmetrically lowering legs at the bottoms of two sides of the trolley, splicing the bottom die and the vertical support from bottom to top, erecting the section steel and the guide pipe, splicing the outer die, and supporting and fixing the inclined support.
Before arch sheathing construction, firstly, thoroughly cleaning surface soil, shrubs and isolated dangerous stones which are possibly collapsed above the opening and on the side; the construction concept of 'zero excavation' tunneling is required to be followed, large excavation and large brushing on a mountain body are avoided, and damage to natural landforms is reduced. And preferentially constructing a catch basin outside the side-up slope of the cave mouth to stabilize the slope and prevent surface water from influencing the stability of the cave mouth. Before arch sheathing construction, a catch basin is arranged at the position 3-5 meters outside a side and upward slope, a trough pit must be dug during catch basin construction, the direct construction of the catch basin on the ground surface is forbidden, the catch basin can be constructed according to the terrain, and a rapid trough or an energy dissipation pool can be arranged at the steep bottom of the slope surface. The side and side slope construction should be measured while excavating, and the top-down excavation and protection step by step ensure that the excavated slope surface is smooth and meets the design requirements. The side slope and the side slope are excavated according to the stability of the side slope, and small guide pipes are properly added to ensure the safety and the quality of the construction of the hole.
The arch foundation adopts machinery as the main, and the manual work is the excavation mode of assisting, excavates to the design elevation after, uses light-duty sounding appearance to carry out the bearing capacity to the basement and detects, if not then need to trade and fill. The arch foundation needs to be maintained for a sufficient age after concrete is poured.
The manual cooperation crane carries out the template to the cover arched trolley and assembles, and the construction order is: measuring and paying off → symmetrically dropping feet of the bottom legs at the two sides of the trolley → splicing the bottom die and the vertical support from bottom to top → erecting the section steel and the guide pipe → splicing the outer die → supporting and fixing the inclined strut. The longitudinal length of the arch-covering trolley is 2m, the height of the arch-covering trolley is 0.9m, the bottom die and the face plate are both made of Q235 steel with the thickness of 1.2cm, the back rib of the side die adopts 8# channel steel, and the distance between the back ribs is 1 m. Vertical support is 14# worker steel, and the bracing is adjustable lead screw, supports the footing position and all sets up 30cm concrete cushion.
In the process of erecting the section steel, after the bottom die is assembled, the bottom die is thoroughly cleaned; erecting 3I 22 steel beams at a designed interval, wherein the steel beam connecting plates are not allowed to be on the same cross section; the section steels are connected into a whole by phi 22 steel bars, and the distance and the length of the connection are controlled in the process.
When the orifice pipe is positioned, accurately arranging and fixing the orifice guide pipe according to the design angle and the distance, and paying attention to the plugging of the guide pipe before the die is sealed; before the face plate and the side plate are sealed, a mold release agent is required to be coated on the bottom mold, the side plate and the face plate in a brush mode so as to guarantee the appearance quality of concrete construction. Before concrete is poured, the arch sheathing template is integrally reinforced, whether bolts at the splicing positions of the templates are screwed down or not is checked one by one, and the construction stability is guaranteed.
In the concrete pouring, formwork dismantling and maintenance processes, a pouring mode that a crane and a funnel crane are used for hoisting and feeding into a mold is adopted, the two sides of a sleeve arch are uniformly distributed, the material is discharged from the arch waist positions of the two sides, the material is discharged from the arch crown and fed into the mold, the concrete vibration mainly adopts attached vibration, and the inserted vibration is assisted. The concrete reaches 2.5Mpand a, detaching the formwork, wherein the detachment of the formwork is realized by firstly detaching the lateral inclined struts, then detaching the connecting bolts of the side forms and the panels one by one, adjusting the inner support screw rod and the two side arch foot screw rods in the vault, integrally separating the inner support frame from the concrete, and finally symmetrically detaching the trolley formwork from top to bottom. The curing of the arch concrete adopts geotextile covering and watering moisturizing curing, and the curing time is not less than 7 days.
The materials and equipment adopted by the tunnel integrated arch sheathing trolley construction method are as follows:
quality control:
in order to ensure the construction quality of the cover arch, the method strictly controls the construction according to the following requirements:
1. the quality control basis is as follows: ISO9001 quality management system, technical Specification for road Tunnel construction (JTG/T3660-2020), first civil engineering for road engineering quality inspection and assessment standards (JTG F80/1), and related provisions of design drawings.
2. The steel adopted by the arch sheathing construction must meet the national standard quality requirement.
3. Bolt holes of connecting plates on each component are required to be accurately formed, and the assembling quality is ensured.
4. The concrete quality must meet the relevant specification requirements.
5. The construction contour dimension of each procedure is strictly controlled, the dimension of the steel end die is ensured to meet the design requirement, and the steel end die can be effectively put into use.
Safety measures are as follows:
1. strictly executing a company 'three-standard integration' management system, establishing a safety management mechanism, evaluating and analyzing risk source factors, formulating a safety management scheme, and executing according to relevant regulations such as 'highway engineering construction safety technical specifications' and 'construction site temporary electricity utilization safety technical specifications'.
2. Before arch sheathing construction, construction technology bottom crossing and safety technology bottom crossing are carried out on personnel participating in construction.
3. In the construction process, all operators in the arch sheathing construction must take charge of post, participate in post training and pre-office education, and strictly comply with safe operation regulations.
4. When the electric welding, oxygen cutting and other works are constructed on site, operators must be on duty and strictly adhere to safe operation regulations.
5. All personnel entering the construction site must wear safety helmets and reflective vests as required.
6. Safety guarantee measures in the using process:
1) vehicles and personnel irrelevant to construction are forbidden to enter a construction site, and a professional security worker inspects the site every day to remove potential safety hazards in time;
2) setting a safety warning area and a warning line, and forbidding all foreign vehicles and non-working personnel in the construction process;
3) the temporary electricity utilization must meet the technical specification of temporary electricity utilization safety in construction sites.
And (3) environmental protection measures:
1. strictly executing a company 'three-standard integration' management system, establishing an environmental protection management organization, evaluating and analyzing environmental factors, formulating environmental protection measures during construction, and executing according to relevant regulations of 'construction engineering construction site management regulations'.
2. After the construction is finished, residual materials need to be recycled in time, and a construction site needs to be cleaned;
3. the construction site strictly prohibits the materials from being piled up and placed randomly, and keeps the scene clean and tidy.
Economic benefits are as follows:
from the aspect of construction progress, safety and quality requirement, adopt tunnel integral type cover to encircle platform truck steel mould and be superior to traditional combination wooden mould, reduced the operation risk, greatly accelerated the tunnel and advanced the hole construction progress, still can repeat the reuse under the same section. The Guangxi long road bridge construction limited company has 3 tunnels in total and 10 arch sets in the constructed Bama to Pingguo expressway, uses the arch set trolley, carries out comprehensive analysis according to the construction progress and the personnel and equipment investment, and can save the construction cost by about 9.1 ten thousand yuan. The cost analysis table is as follows:
according to the calculation of 6 tunnel mouths, the time cost of the integrated arch-sleeving trolley steel die for the tunnel can be reduced by 10 multiplied by 10 to 5 multiplied by 10 which is 50 days;
the cost of the traditional combined wood template (1.2m 0.2m 0.01m) is 1 ten thousand yuan, the loss rate is calculated according to 0.1, the cost is 1.1 ten thousand yuan, and the labor cost is up to 3 thousand per hole. The whole set of tunnel integrated arch-covering trolley steel mould template is 15 ten thousand yuan, and can be circularly used for 10 holes.
Cost difference (10 × 300 × 10 × 10)/10000+1.1- (5 × 280 × 5 × 10/10000+15) ═ 31.1-22 ═ 9.1 ten thousand yuan
Social benefits are as follows:
compared with the construction method adopting a wood mold, the construction method has the advantages of being cheap to operate, capable of effectively improving the construction speed, avoiding damaging raw materials, reducing the construction cost, reducing the felling of trees, protecting the ecological environment, being beneficial to the sustainable development of society and economy and realizing the green demonstration highway construction. But also improves the resource utilization rate and forms comprehensive social benefits.
The technical benefits are as follows:
by adopting the construction method, the appearance and the quality of the set arch are effectively improved, and construction experience is provided for subsequent similar tunnel portal set arch construction.
Application example:
1. and a No. 2 tunnel of the Bama to Pingguo expressway.
2. And a No. 4 tunnel on a Parma to Pingguo expressway.
3. Bama to Pingguo highway Daohnjiang No. 2 tunnel.
In the construction of the tunnel second lining, the construction method is adopted by Guangxi long road and bridge construction Limited company, so that the appearance, quality and progress of arch sheathing construction are ensured, and good social and economic benefits are obtained.
The working principle is as follows: when the tunnel integrated arch sheathing trolley construction method is used for construction, firstly, arch foot foundations on two sides of a sheathing arch are constructed in advance, concrete is poured into a full groove according to the design size, then materials such as trolley inner supports, bottom moulds and panels are transported to the site and then are quickly connected and assembled through bolts. The assembling process is symmetrically carried out from bottom to top on two sides of the sleeve arch, profile steel and an adjusting screw rod are respectively used as vertical and oblique supports when the sleeve arch is assembled to the arch waist and the arch crown, and a concrete cushion block is additionally arranged at the bottom of the support with smaller contact area to increase the stress area of the support. After the arch sleeving trolley is integrally assembled and molded, a phi 89 steel pipe is used as an inclined strut for arranging and reinforcing the arch sleeving trolley on the outer side. The arch-sleeving trolley template is mainly divided into a bottom template and a face template, the arch waist positions on two sides of the face template and the arch crown positions on the top of the face template are respectively reserved with a concrete die-entering opening of 0.5m multiplied by 0.5m, and concrete pouring is symmetrically and uniformly poured into the die and vibrated from two sides of the arch sleeving to ensure the construction quality of concrete. The formwork is dismantled after the arch sheathing concrete reaches 2.5Mpa, the whole inclined strut in the outer side is firstly dismantled, then the support screw rod is unscrewed to integrally lift off the inner support of the trolley, then the vertical and inclined struts of the formwork are dismantled in sequence, and finally the trolley formwork is dismantled from top to bottom. And subsequently, the arch concrete is maintained, and the advanced pipe shed drilling operation can be carried out after the strength meets the conditions, so that a series of work is completed.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (8)
1. An integral arch sheathing trolley construction method for a tunnel is characterized in that: the tunnel integrated arch sheathing trolley construction method comprises the following steps: construction preparation, scheme establishment, tunnel control measurement, tunnel opening side slope and upward slope excavation, side slope and upward slope protection, arch sheathing foundation pouring, arch sheathing trolley assembly, arch sheathing concrete pouring, formwork removal and maintenance.
2. The tunnel integrated arch sheathing trolley construction method as claimed in claim 1, wherein: the construction preparation mainly comprises the operations of purchasing and checking a trolley template and construction materials, making a scheme, checking drawings, lofting and checking a set arch contour line, setting up a cave entrance construction platform and the like.
3. The tunnel integrated arch sheathing trolley construction method as claimed in claim 1, wherein: the tunnel control measurement comprises plane control and elevation control.
4. The tunnel integrated arch sheathing trolley construction method as claimed in claim 1, wherein: and the excavation of the side and upward slope of the hole opening comprises the construction of a tunnel top intercepting ditch.
5. The tunnel integrated arch sheathing trolley construction method as claimed in claim 1, wherein: the side and top slope protection comprises anchoring rods, hanging reinforcing mesh and spraying concrete.
6. The tunnel integrated arch sheathing trolley construction method as claimed in claim 1, wherein: and detecting the pouring bearing capacity of the arch foundation in the arch foundation pouring process.
7. The tunnel integrated arch sheathing trolley construction method as claimed in claim 1, wherein: the assembly construction sequence of the arch-covered trolley is as follows: measuring and paying off, symmetrically lowering legs at the bottoms of two sides of the trolley, splicing the bottom die and the vertical support from bottom to top, erecting the section steel and the guide pipe, splicing the outer die, and supporting and fixing the inclined support.
8. The tunnel integrated arch sheathing trolley construction method as claimed in claim 1, wherein: the foundation of arch springing at two sides of the set arch is firstly constructed, concrete is poured in a full groove according to the design size, and then materials such as the trolley inner support, the bottom die and the face plate are transported to the site and are quickly connected and assembled by bolts. The assembling process is symmetrically carried out from bottom to top on two sides of the sleeve arch, profile steel and an adjusting screw rod are respectively used as vertical and oblique supports when the sleeve arch is assembled to the arch waist and the arch crown, and a concrete cushion block is additionally arranged at the bottom of the support with smaller contact area to increase the stress area of the support. After the arch sleeving trolley is integrally assembled and molded, a phi 89 steel pipe is used as an inclined strut for arranging and reinforcing the arch sleeving trolley on the outer side. The arch-sleeving trolley template is mainly divided into a bottom template and a face template, the arch waist positions on two sides of the face template and the arch crown positions on the top of the face template are respectively reserved with a concrete die-entering opening of 0.5m multiplied by 0.5m, and concrete pouring is symmetrically and uniformly poured into the die and vibrated from two sides of the arch sleeving to ensure the construction quality of concrete. The formwork is dismantled after the arch sheathing concrete reaches 2.5Mpa, the whole inclined strut in the outer side is firstly dismantled, then the support screw rod is unscrewed to integrally lift off the inner support of the trolley, then the vertical and inclined struts of the formwork are dismantled in sequence, and finally the trolley formwork is dismantled from top to bottom. And subsequently, curing the arch concrete, and performing advanced pipe shed drilling operation after the strength meets the conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110573400.1A CN113339003A (en) | 2021-05-25 | 2021-05-25 | Construction method of tunnel integrated arch sheathing trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110573400.1A CN113339003A (en) | 2021-05-25 | 2021-05-25 | Construction method of tunnel integrated arch sheathing trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113339003A true CN113339003A (en) | 2021-09-03 |
Family
ID=77471370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110573400.1A Pending CN113339003A (en) | 2021-05-25 | 2021-05-25 | Construction method of tunnel integrated arch sheathing trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113339003A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673528A (en) * | 2022-03-28 | 2022-06-28 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel top cavity supporting method |
-
2021
- 2021-05-25 CN CN202110573400.1A patent/CN113339003A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673528A (en) * | 2022-03-28 | 2022-06-28 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel top cavity supporting method |
| CN114673528B (en) * | 2022-03-28 | 2023-04-28 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel top cavity supporting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106703834A (en) | Secondary lining integral formworking construction method for tunnel with super-large cross section | |
| CN207777770U (en) | A kind of precast spliced pipe fitting jacking system | |
| CN108678751B (en) | Assembly type construction method of shield cutter head manhole by jacking and excavating firstly | |
| CN108643938B (en) | Smooth surface shotcrete supporting structure of deep coal mine tunnel and construction method thereof | |
| CN108677962B (en) | Subway entrance and exit segment foundation pit formwork installing and dismantling method | |
| CN109252445A (en) | Cast-in-situ Beam assembled Large Diameter Pipeline steel pipe support structure and its construction method | |
| CN111794774A (en) | Rapid entering protection structure of half cut single-pressure open cut tunnel and construction method | |
| CN107806101A (en) | Construction method of the bar shaped foundation ditch cast-in-place concrete to the prefabricated linking beam of support | |
| CN113152262A (en) | Bridge single-column pier reinforcement construction method | |
| CN110284702A (en) | A kind of constructing device and construction method of hyperboloid arc mixed mud wall | |
| CN114439487A (en) | Existing shield tunnel connection channel opening construction method | |
| CN114150593B (en) | Simple arch bridge dismantling and reconstructing structure and arch bridge dismantling and reconstructing method | |
| CN115369778A (en) | Construction method of steel cross beam rotating body structure | |
| CN108708727B (en) | Half-excavation rear-jacking shield cutter head manhole assembly type construction method | |
| CN212563261U (en) | Half cut single-pressure type open cut tunnel advances hole protective structure fast | |
| CN113339003A (en) | Construction method of tunnel integrated arch sheathing trolley | |
| CN111173042B (en) | Advanced water stop post-cast strip of foundation slab and construction method | |
| CN107794945A (en) | A kind of removable assembled template peace tears operating system and its construction method open | |
| CN109930610A (en) | Constrained environment foundation pit adds the construction method of steel pipe mixing diagonal brace using concrete | |
| CN208718686U (en) | A kind of precast assembly steel loop borehole wall | |
| CN109024670B (en) | Underground comprehensive pipe gallery protection and reinforcement system penetrating through buried high-voltage cable and reinforcement method | |
| CN110847289A (en) | Ultra-deep large-span circular water intake pump house roof support and construction method thereof | |
| CN114875813B (en) | Construction equipment and construction method for dismantling and rebuilding reinforced concrete steel frame arch bridge | |
| CN113775344A (en) | Tunnel in-situ unilateral extension construction method | |
| CN104963344B (en) | The deep basal pit underground construction method that concrete supporting removal and structure construction are synchronously carried out |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |