CN114704297B - Integral inverted arch structure of tunnel and construction process thereof - Google Patents
Integral inverted arch structure of tunnel and construction process thereof Download PDFInfo
- Publication number
- CN114704297B CN114704297B CN202210324776.3A CN202210324776A CN114704297B CN 114704297 B CN114704297 B CN 114704297B CN 202210324776 A CN202210324776 A CN 202210324776A CN 114704297 B CN114704297 B CN 114704297B
- Authority
- CN
- China
- Prior art keywords
- inverted arch
- tunnel
- side wall
- construction
- poured
- 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.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000005516 engineering process Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000007781 pre-processing Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 238000013461 design Methods 0.000 claims description 8
- 238000009412 basement excavation Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 206010023204 Joint dislocation Diseases 0.000 claims 1
- 239000011435 rock Substances 0.000 description 11
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000009415 formwork Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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
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 discloses a tunnel integral inverted arch structure and a construction process thereof, wherein the construction process of the tunnel integral inverted arch structure comprises the following steps: excavating a tunnel inverted arch section to be poured at the tunnel face, and preprocessing; manufacturing an inverted arch template; assembling the inverted arch side wall body and the end die body into a whole; after the filling side templates and the end die body are assembled into a whole, the filling side templates are lifted to the inverted arch section of the tunnel to be poured; respectively pouring concrete into the end mould body, the filling side mould plate and the inverted arch side wall body so that the transverse construction joint is misplaced within a first preset value; and detecting and analyzing by stratum acoustic wave CT detection technology; and removing the inverted arch form and the filling side form after the concrete is molded. The technical scheme of the invention can ensure the construction quality and improve the construction efficiency.
Description
Technical Field
The invention relates to the technical field of tunnel inverted arch structures, in particular to an integral tunnel inverted arch structure and a construction process thereof.
Background
In order to ensure the construction safety of railway tunnels, the requirements of railway departments on the distance between the inverted arch and the tunnel face are more and more strict, and the technical regulations for the construction safety of railway tunnel engineering (TB 10304-2009) prescribe that: the distance between the inverted arch and the face in the class III surrounding rock is not more than 90m, the class IV surrounding rock is not more than 50m, and the class V surrounding rock and above are not more than 40m. The railway department (notification about further definition of technical regulations about weak surrounding rock and poor geological railway tunnel design construction) (iron construction [2010] 120) makes further mandatory regulations on the distance between tunnel excavation face and inverted arch and interlining: the primary support after tunnel excavation should be constructed and sealed in time to form a ring, and the distance between the sealed position of the IV, V and VI-level surrounding rock inverted arch and the tunnel face is not more than 35m; the distance between the secondary lining of the IV-level surrounding rock and the tunnel face is not more than 90m; the distance between the V, VI-level surrounding rock secondary lining and the face is not more than 70m. In addition, in the current tunnel construction, the quality and the progress of the inverted arch construction are difficult to guarantee and the cost is high because no ideal supporting equipment and construction technology exist.
Therefore, the existing inverted arch arc-shaped template can only pour an inverted arch part, and the inverted arch filling side template can be installed after the strength meets the requirement, wherein the procedures are complicated and the intermittent time of the procedures is long, so that the inverted arch and filling construction progress is restricted, and the overall tunnel construction progress is severely restricted; and also greatly affects economic efficiency.
Disclosure of Invention
The invention mainly aims to provide a construction process of a tunnel integral inverted arch structure, and aims to ensure construction quality and improve construction efficiency.
The invention aims to solve the problems by adopting the following technical scheme:
the construction process of the tunnel integral type inverted arch structure comprises a filling side formwork and an inverted arch formwork, wherein the inverted arch formwork comprises an end formwork body and an inverted arch side wall body; the construction process of the integral inverted arch structure of the tunnel comprises the following steps:
Excavating a tunnel inverted arch section to be poured at the tunnel face, and preprocessing;
manufacturing an inverted arch template; assembling the inverted arch side wall body and the end die body into a whole;
after the filling side templates and the end die body are assembled into a whole, the filling side templates are lifted to the inverted arch section of the tunnel to be poured;
respectively pouring concrete into the end mould body, the filling side mould plate and the inverted arch side wall body so that the transverse construction joint is misplaced within a first preset value; and detecting and analyzing by stratum acoustic wave CT detection technology;
And removing the inverted arch form and the filling side form after the concrete is molded.
Preferably, the step of excavating the inverted arch section of the tunnel to be poured at the tunnel face and performing pretreatment includes the following steps:
Excavating the inverted arch section of the tunnel to be poured according to a design drawing, and cleaning impurities of the inverted arch section of the tunnel to be poured after the excavation is completed so as to obtain a construction surface of the inverted arch section of the tunnel to be poured without virtual slag;
and/or a drainage blind pipe is fixedly arranged on the construction surface of the inverted arch section of the tunnel to be poured; and ventilation treatment of the construction tunnel is performed.
Preferably, the inverted arch template is manufactured; in the step of assembling the inverted arch side wall body and the end die body into a whole, the method comprises the following steps:
Respectively assembling the inverted arch side wall body and the end mold body;
at least three first positioning steel bars are fixedly arranged between the inverted arch side wall body and the end die body at intervals;
And assembling the inverted arch side wall body and the end die body as a whole with the first positioning steel bars.
Preferably, the step of lifting the filling side form and the end mold body to the inverted arch section of the tunnel to be poured after the filling side form and the end mold body are assembled into a whole includes:
assembling the filling side form;
at least three second positioning steel bars are fixedly arranged between the filling side template and the end die body at intervals;
assembling the filling side templates with the end mold bodies and the second positioning steel bars to form a whole;
and lifting the whole body in the previous step to the inverted arch section of the tunnel to be poured.
Preferably, in the step of pouring concrete into the end mold body and the filling side mold plate and the inverted arch side wall respectively so that the transverse construction joint is dislocated within a first preset value, the method comprises the following steps:
and pouring concrete into the end mould body and the inverted arch side wall body in sequence, so that the transverse construction joints between the filling side mould plate and the end mould body and/or between the end mould body and the inverted arch side wall body are misplaced within a first preset value.
Preferably, the tunnel integral inverted arch structure further comprises an arc-shaped inverted arch middle section, and at least two inverted arch templates are selected; the inverted arch middle section is connected between two inverted arch templates;
The step of pouring concrete into the end mould body and the inverted arch side wall body in sequence comprises the following steps:
Pouring the pouring concrete from the filling side templates so that the pouring concrete is poured into the middle section of the inverted arch;
Stopping pouring the filling side templates when the concrete is in contact with or close to the end mould body after the concrete is poured in the middle section of the inverted arch;
pouring concrete from the inverted arch side wall body so as to realize pouring of the inside of the end die body and the inside of the inverted arch side wall body in sequence.
Preferably, the pouring concrete from the inverted arch side wall body is poured to realize pouring of the inside of the end mold body and the inside of the inverted arch side wall body in sequence, and the pouring concrete comprises the following steps:
At least four pouring operation windows are additionally arranged along the width direction of the inverted arch side wall body, and then pouring concrete is poured from the pouring operation windows respectively, so that the inside of the end die body and the inside of the inverted arch side wall body are poured in sequence.
Preferably, the first preset value is that the transverse dislocation gap is larger than 50cm; and/or, the first preset value is that the transverse dislocation gap is smaller than 100cm.
Preferably, the step of detecting and analyzing by the formation acoustic wave CT detection technology includes the following steps:
Respectively carrying out construction front state, concrete initial solidification state and concrete molding rear state on the filling side template, the inverted arch side wall body and the end mold body by using a stratum acoustic wave CT detection technology;
and respectively comparing the detection data information of the state before construction, the state when the concrete is initially solidified and the state after the concrete is formed with the theoretical data information in the design drawing to judge the construction quality.
Preferably, a tunnel integral inverted arch structure is constructed by applying the construction process of the tunnel integral inverted arch structure according to any one of the above; the integral type inverted arch structure of the tunnel comprises a filling side template and an inverted arch template, wherein the inverted arch template comprises an end die body and an inverted arch side wall body, a first end of the end die body is communicated with a first end of the inverted arch side wall body, and a second end of the end die body is communicated with a first end of the filling side template; a transverse construction joint is respectively arranged between the end die body and the filling side die plate and between the end die body and the inverted arch side wall; and positioning steel bars are respectively arranged between the end mould body and the filling side mould plate and between the end mould body and the inverted arch side wall body.
The beneficial effects are that: the technical scheme of the invention is that firstly, a tunnel inverted arch section to be poured at a tunnel face is excavated, and pretreatment is carried out, so that a foundation is laid for the quality and stability of subsequent construction; then making an inverted arch template, and assembling the inverted arch template and the end die body into a whole; assembling the filling side templates and the end mold bodies to form a whole, mechanically hoisting the whole molded end mold bodies after processing to enable the molded end mold bodies to be transported to the inverted arch section of the tunnel to be poured, so that a non-target splice after one-time mold supporting molding can be realized, an integral inverted arch structure is obtained, the structural stability of the integral inverted arch structure is ensured, and a foundation is laid for the quality and stability of subsequent construction; then pouring concrete into the end mould body, the filling side mould plate and the inverted arch side wall respectively, so that the transverse construction joint is misplaced within a first preset value; the detection analysis is carried out through the stratum acoustic CT detection technology, so that layered construction is realized, the dislocation of the transverse construction joints of each structural layer is ensured on the premise of a first preset value, and the obtained integral inverted arch structure is combined, so that the construction smoothness is ensured, and the process gap time is effectively shortened; after the concrete is molded, dismantling the inverted arch form and filling the side form; and the construction process of the integral inverted arch structure of the tunnel can shorten the inverted arch and filling operation time, reduce the labor intensity, improve the tunnel construction efficiency and bring greater economic benefit to construction projects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of an embodiment of a construction process of a tunnel integral inverted arch structure according to the present invention.
Fig. 2 is a schematic view of a portion of the construction of an inverted arch form and filling side forms of an embodiment of a tunnel-type integrated inverted arch structure according to the present invention.
Fig. 3 is an enlarged view of a portion of one embodiment of a tunnel-type inverted arch structure according to the present invention.
Fig. 4 is a schematic view of an embodiment of a tunnel integral inverted arch structure according to the present invention.
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | Filling side form | 10 | First casting cavity |
| 2 | Inverted arch form | 20 | Transverse construction joint |
| 21 | End mould body | 25 | Positioning steel bar |
| 22 | Inverted arch edge wall | 6 | Tunnel karst cave body |
| 7 | Inverted arch middle section |
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a construction process of a tunnel integral inverted arch structure.
As shown in fig. 1, in an embodiment of the present invention, the tunnel-integrated inverted arch structure includes at least two filling side forms 1 and at least two inverted arch forms 2, the inverted arch forms 2 include an end mold body 21 and an inverted arch wall 22, a first end of the end mold body 21 is in communication with a first end of the inverted arch wall 22, and a second end of the end mold body 21 is in communication with a first end of the filling side forms 1; the construction process of the integral inverted arch structure of the tunnel; the method comprises the following steps:
S1, excavating a tunnel inverted arch section to be poured at a tunnel face, and preprocessing;
s2, manufacturing an inverted arch template; assembling the inverted arch side wall body and the end die body into a whole;
s3, after the filling side templates and the end die body are assembled to form a whole, hoisting the filling side templates to the inverted arch section of the tunnel to be poured;
s4, respectively pouring concrete into the end mold body, the filling side mold plate and the inverted arch side wall body so that the transverse construction joint is misplaced within a first preset value; and detecting and analyzing by stratum acoustic wave CT detection technology;
S5, after the concrete is molded, removing the inverted arch form and the filling side form.
According to the technical scheme, firstly, a tunnel inverted arch section to be poured at a tunnel face is excavated, and pretreatment is carried out, so that a foundation is laid for the quality and stability of subsequent construction; then making an inverted arch template, and assembling the inverted arch template and the end die body into a whole; assembling the filling side templates and the end mold bodies to form a whole, mechanically hoisting the whole molded end mold bodies after processing to enable the molded end mold bodies to be transported to the inverted arch section of the tunnel to be poured, so that a non-target splice after one-time mold supporting molding can be realized, an integral inverted arch structure is obtained, the structural stability of the integral inverted arch structure is ensured, and a foundation is laid for the quality and stability of subsequent construction; then pouring concrete into the end mould body, the filling side mould plate and the inverted arch side wall respectively, so that the transverse construction joint is misplaced within a first preset value; the detection analysis is carried out through the stratum acoustic CT detection technology, so that layered construction is realized, the dislocation of the transverse construction joints of each structural layer is ensured on the premise of a first preset value, and the obtained integral inverted arch structure is combined, so that the construction smoothness is ensured, and the process gap time is effectively shortened; after the concrete is molded, dismantling the inverted arch form and filling the side form; and the construction process of the integral inverted arch structure of the tunnel can shorten the inverted arch and filling operation time, reduce the labor intensity, improve the tunnel construction efficiency and bring greater economic benefit to construction projects.
Specifically, in some embodiments, in the step S1, the step of excavating an inverted arch section of the tunnel to be poured at the face and performing pretreatment includes the following steps:
and excavating the inverted arch section of the tunnel to be poured according to a design drawing, and cleaning impurities of the inverted arch section of the tunnel to be poured after the excavation is completed so as to obtain a construction surface of the inverted arch section of the tunnel to be poured without virtual slag.
Specifically, in some embodiments, in S1, the step of excavating an inverted arch section of the tunnel to be poured at the face, and performing pretreatment further includes the following steps:
A drainage blind pipe is fixedly arranged on a construction surface of an inverted arch section of a tunnel to be poured; and ventilation treatment of the construction tunnel is performed. In this embodiment, after the excavation of the inverted arch section of the poured tunnel is completed, drainage blind pipes are fixedly arranged on two side walls of the construction surface of the inverted arch section of the tunnel to be poured; the ventilation treatment is that a plurality of axial flow fans guide fresh air outside the tunnel to a construction surface, and useless gas is discharged out of the construction tunnel through an ejector; thereby guaranteeing the construction safety performance and the construction quality.
Specifically, in some embodiments, in the S2, the inverted arch form is fabricated; in the step of assembling the inverted arch side wall body and the end die body into a whole, the method comprises the following steps:
S21, respectively assembling the inverted arch side wall body and the end mold body;
s22, at least three first positioning steel bars are fixedly arranged between the inverted arch side wall body and the end die body at intervals;
S23, assembling the inverted arch side wall body and the end die body as a whole with the first positioning steel bars. Wherein in some embodiments, the number of the first positioning steel bars is 4, and in other embodiments of the present invention, the number of the first positioning steel bars may be 5 or other numbers. Preferably, the 4 first positioning steel bars are equidistantly arranged along the extending direction of the tunnel. And preferably the spacing between two adjacent first positioning bars is 225-275mm m, for example 250mm. The mode can ensure the stability of the structure, and further ensures the construction quality.
Specifically, in some embodiments, in the step S3, after the filling side template is assembled with the end mold body to form a whole, the step of lifting the filling side template to the inverted arch section of the tunnel to be poured includes:
S31, assembling the filling side template;
s32, arranging and fixing at least three second positioning steel bars between the filling side template and the end die body at intervals;
S33, assembling the filling side template, the end die body and the second positioning steel bar into a whole;
S34, lifting the whole body in the previous step to the inverted arch section of the tunnel to be poured. In some embodiments, the number of the first positioning steel bars is 4, and in other embodiments of the present invention, the number of the second positioning steel bars may be 5 or other numbers. Preferably, the 4 second spacer bars are equidistantly spaced along the extending direction of the tunnel. And preferably the spacing between two adjacent second locating rebars is 225-275mm m, for example 250mm. The mode can ensure the stability of the structure, and further ensures the construction quality.
The construction joint (construction joint) refers to a joint formed between the concrete poured in the prior and later steps due to the design requirement or the construction requirement of the sectional pouring in the concrete pouring process. The construction joint comprises a transverse construction joint, and the position of the transverse construction joint is arranged at a position of the structure, which is smaller in shearing force and convenient to construct, in the horizontal and transverse direction.
Specifically, in some embodiments, in the steps of pouring concrete into the interior of the end mold body and the interior of the filling side form and the interior of the inverted arch side wall, respectively, so that the transverse construction joint is dislocated within a first preset value, the method comprises the following steps:
and pouring concrete into the end mould body and the inverted arch side wall body in sequence, so that the transverse construction joints between the filling side mould plate and the end mould body and/or between the end mould body and the inverted arch side wall body are misplaced within a first preset value.
Wherein, in some embodiments, as shown in fig. 4, the tunnel integral inverted arch structure further comprises an arc-shaped inverted arch middle section 7, and at least two inverted arch templates 2 are selected; the inverted arch middle section 7 is connected between two inverted arch forms 2; the bottom of the inverted arch middle section 7 is connected to the inner bottom of the tunnel karst cave body 6, and the filling side template is located at the joint of the inverted arch middle section 7 and the inverted arch template 2. Wherein, in some embodiments, the inverted arch middle section 7 comprises at least two layers of rigid skeletons and vertical anchor piles respectively connected with the rigid skeletons as a whole; the rigid framework comprises X-axis steel bars and Y-axis steel bars, and the X-axis steel bars and the Y-axis steel bars are distributed in a staggered mode and are connected into a whole.
Specifically, in some embodiments, the step of pouring concrete into the interior of the end mold body and the interior of the inverted arch wall in sequence includes the steps of:
Pouring the pouring concrete from the filling side templates so that the pouring concrete is poured into the middle section of the inverted arch;
Stopping pouring the filling side templates when the concrete is in contact with or close to the end mould body after the concrete is poured in the middle section of the inverted arch;
Pouring concrete from the inverted arch side wall body so as to realize pouring of the inside of the end die body and the inside of the inverted arch side wall body in sequence. Because the middle section of the inverted arch is the middle section of the inverted arch with large arc radius, the gradient is gentle in the pouring process, and the pouring can be performed from the middle to the two sides by a concrete natural paving method; and when the end mould body is poured, pouring the inverted arch concrete from the inverted arch side wall body, so that the inverted arch concrete is poured once.
Wherein, in some embodiments, in the step of pouring the casting concrete from the inverted arch side wall to realize casting of the inside of the end mold body and the inside of the inverted arch side wall in sequence, the method comprises the following steps:
At least four pouring operation windows are additionally arranged along the width direction of the inverted arch side wall body, and then pouring concrete is poured from the pouring operation windows respectively, so that the inside of the end die body and the inside of the inverted arch side wall body are poured in sequence.
In some embodiments, the pouring concrete is poured from the pouring operation window at the same time, so that the problem that the concrete cannot vibrate and the pouring quality can be influenced in the width range of the arc-shaped template is further and better solved, the defect that the concrete cannot vibrate can be completely overcome, honeycomb pitting caused by vibration leakage is avoided, and the internal compaction and external appearance of the concrete are guaranteed.
The method can realize a multi-structure multi-pouring mode, and the construction quality is ensured by effectively transversely constructing the joint values; furthermore, the process intermittent time can be shortened, and the overall construction efficiency and quality can be improved.
Wherein, in some embodiments, the first preset value is a lateral misalignment gap greater than 50cm; wherein, in some embodiments, the first preset value is a lateral misalignment gap greater than 50cm and less than 100cm; the structural stability among the templates of each section can be guaranteed through setting up the horizontal construction joint of first default, and then construction quality and efficiency have been ensured.
The integral inverted arch structure of tunnel is as a steel construction form, adopts shaped steel preassembly as an organic wholely with filling side form and inverted arch middle part section, and the anchor stake is as tension member, in the work progress, passes through the template panel with concrete flow load and transmits rigid skeleton above, then transmits the anchor stake by rigid skeleton, transmits to the inverted arch side wall body or bottom country rock of having been under construction by the anchor stake at last, forms a complete atress system, guarantees that the template does not take place the skew, and then realizes the quick construction of inverted arch.
The prior advanced geological prediction is mainly used for predicting surrounding rock in front of the face by means of new three-dimensional geological advanced prediction technologies of tunnels, such as a mass radar, infrared detection, TSP (total reflection) and the like, wherein the geological radar and the infrared detection are short in prediction distance and low in precision, the TSP prediction distance is long, but only predicts surrounding rock in front of the face, and the prediction precision of surrounding rock conditions around the tunnels cannot intuitively and accurately judge the position, the range and the water inflow of poor geology. In the formation acoustic CT detection technology, a formation acoustic CT detector is selected to realize the technology; the stratum acoustic wave CT detector is mainly applied to stratum and poor geological detection and engineering quality detection, and utilizes digital multiple elements and combines tunnel normal geological prediction to accurately predict poor geological conditions, so that long-distance prediction, long-distance water detection, three-dimensional space three-dimensional imaging and rapid and accurate prediction of poor geological positions and water inflow are realized; and carrying out theoretical verification after the treatment is completed.
Specifically, in some embodiments, the step of performing detection analysis by using the formation acoustic wave CT detection technology includes the following steps:
Respectively carrying out construction front state, concrete initial solidification state and concrete molding rear state on the filling side template, the inverted arch side wall body and the end mold body by using a stratum acoustic wave CT detection technology;
and respectively comparing the detection data information of the state before construction, the state when the concrete is initially solidified and the state after the concrete is formed with the theoretical data information in the design drawing to judge the construction quality.
The invention also provides a tunnel integral inverted arch structure, which uses the construction process of the tunnel integral inverted arch structure, and the concrete scheme of the construction process of the tunnel integral inverted arch structure refers to the embodiment, and because the tunnel integral inverted arch structure adopts all the technical schemes of all the embodiments, the tunnel integral inverted arch structure at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted. As shown in fig. 2 and 3, the tunnel integral inverted arch structure comprises a filling side template 1 and an inverted arch template 2, wherein the inverted arch template 2 comprises an end mould body 21 and an inverted arch side wall 22, a first end of the end mould body 21 is communicated with a first end of the inverted arch side wall 22, and a second end of the end mould body 21 is communicated with a first end of the filling side template 1; a transverse construction joint 20 is respectively arranged between the end die body 21 and the filling side die plate 1 and between the end die body 21 and the inverted arch side wall 22; and positioning steel bars 25 are respectively arranged between the end die body 21 and the filling side die plate 1 and between the end die body 21 and the inverted arch side wall 22.
Wherein, in some embodiments, the gap of the transverse construction joint 20 is greater than 50cm; wherein, in some embodiments, the first preset value is a lateral misalignment gap greater than 50cm and less than 100cm; the structural stability among the templates of each section can be guaranteed through setting up the horizontal construction joint of first default, and then construction quality and efficiency have been ensured.
Wherein in some embodiments, the spacer bar 25 comprises a first spacer bar and a second spacer bar, the first spacer bar being located between the inverted arch side wall and the end mold; the second positioning steel bars are positioned between the filling side templates and the end mold body.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (7)
1. The construction process of the integral type inverted arch structure of the tunnel is characterized in that the integral type inverted arch structure of the tunnel comprises a filling side template and an inverted arch template, and the inverted arch template comprises an end die body and an inverted arch side wall body; the construction process of the integral inverted arch structure of the tunnel comprises the following steps:
Excavating a tunnel inverted arch section to be poured at the tunnel face, and preprocessing;
manufacturing an inverted arch template; assembling the inverted arch side wall body and the end die body into a whole;
after the filling side templates and the end die body are assembled into a whole, the filling side templates are lifted to the inverted arch section of the tunnel to be poured;
respectively pouring concrete into the end mould body, the filling side mould plate and the inverted arch side wall body so that the transverse construction joint is misplaced within a first preset value; and detecting and analyzing by stratum acoustic wave CT detection technology;
after the concrete is molded, dismantling the inverted arch form and the filling side form;
Wherein, in the step of pouring concrete to the inside of end die body and the inside of filling side form and the inside of inverted arch side wall respectively for horizontal construction joint dislocation is in first default, include the following step:
sequentially pouring concrete into the end mold body and the inverted arch side wall body so that transverse construction joints between the filling side mold plates and the end mold body and/or between the end mold body and the inverted arch side wall body are misplaced within a first preset value;
The tunnel integral type inverted arch structure further comprises an arc-shaped inverted arch middle section, and at least two inverted arch templates are selected; the inverted arch middle section is connected between two inverted arch templates; the step of pouring concrete into the end mould body and the inverted arch side wall body in sequence comprises the following steps:
Pouring the pouring concrete from the filling side templates so that the pouring concrete is poured into the middle section of the inverted arch;
Stopping pouring the filling side templates when the concrete is in contact with or close to the end mould body after the concrete is poured in the middle section of the inverted arch;
Pouring concrete from the inverted arch side wall body so as to realize pouring of the inside of the end die body and the inside of the inverted arch side wall body in sequence;
the pouring concrete is poured from the inverted arch side wall body to realize the pouring of the inside of the end die body and the inside of the inverted arch side wall body in sequence, and the pouring concrete comprises the following steps:
At least four pouring operation windows are additionally arranged along the width direction of the inverted arch side wall body, and then pouring concrete is poured from the pouring operation windows respectively, so that the inside of the end die body and the inside of the inverted arch side wall body are poured in sequence.
2. The construction process of the integral inverted arch structure of a tunnel according to claim 1, wherein the step of pre-treating the inverted arch section of the tunnel to be poured at the excavation face comprises the following steps:
Excavating the inverted arch section of the tunnel to be poured according to a design drawing, and cleaning impurities of the inverted arch section of the tunnel to be poured after the excavation is completed so as to obtain a construction surface of the inverted arch section of the tunnel to be poured without virtual slag;
and/or a drainage blind pipe is fixedly arranged on the construction surface of the inverted arch section of the tunnel to be poured; and ventilation treatment of the construction tunnel is performed.
3. The construction process of the tunnel integral inverted arch structure according to claim 1, wherein the inverted arch form is manufactured; in the step of assembling the inverted arch side wall body and the end die body into a whole, the method comprises the following steps:
Respectively assembling the inverted arch side wall body and the end mold body;
at least three first positioning steel bars are fixedly arranged between the inverted arch side wall body and the end die body at intervals;
And assembling the inverted arch side wall body and the end die body as a whole with the first positioning steel bars.
4. The construction process of a tunnel integral inverted arch structure according to claim 1, wherein the step of lifting the filling side form and the end mold body to the tunnel inverted arch section to be poured after the filling side form and the end mold body are assembled into a whole comprises the steps of:
assembling the filling side form;
at least three second positioning steel bars are fixedly arranged between the filling side template and the end die body at intervals;
assembling the filling side templates with the end mold bodies and the second positioning steel bars to form a whole;
and lifting the whole body in the previous step to the inverted arch section of the tunnel to be poured.
5. The construction process of the tunnel integral inverted arch structure according to claim 1, wherein the first preset value is that a transverse dislocation gap is larger than 50cm; and/or, the first preset value is that the transverse dislocation gap is smaller than 100cm.
6. The construction process of a tunnel integral inverted arch structure according to claim 1, wherein in the step of performing detection analysis by formation acoustic wave CT detection technology, the steps of:
Respectively carrying out construction front state, concrete initial solidification state and concrete molding rear state on the filling side template, the inverted arch side wall body and the end mold body by using a stratum acoustic wave CT detection technology;
and respectively comparing the detection data information of the state before construction, the state when the concrete is initially solidified and the state after the concrete is formed with the theoretical data information in the design drawing to judge the construction quality.
7. A tunnel integral inverted arch structure characterized by applying the construction process of the tunnel integral inverted arch structure according to any one of the above claims 1 to 6; the integral type inverted arch structure of the tunnel comprises a filling side template and an inverted arch template, wherein the inverted arch template comprises an end die body and an inverted arch side wall body, a first end of the end die body is communicated with a first end of the inverted arch side wall body, and a second end of the end die body is communicated with a first end of the filling side template; a transverse construction joint is respectively arranged between the end die body and the filling side die plate and between the end die body and the inverted arch side wall; and positioning steel bars are respectively arranged between the end mould body and the filling side mould plate and between the end mould body and the inverted arch side wall body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210324776.3A CN114704297B (en) | 2022-03-30 | 2022-03-30 | Integral inverted arch structure of tunnel and construction process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210324776.3A CN114704297B (en) | 2022-03-30 | 2022-03-30 | Integral inverted arch structure of tunnel and construction process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114704297A CN114704297A (en) | 2022-07-05 |
| CN114704297B true CN114704297B (en) | 2024-07-16 |
Family
ID=82171395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210324776.3A Active CN114704297B (en) | 2022-03-30 | 2022-03-30 | Integral inverted arch structure of tunnel and construction process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114704297B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658447A (en) * | 2022-03-30 | 2022-06-24 | 中铁二十局集团第五工程有限公司 | Tunnel inverted arch construction die carrier structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0941884A (en) * | 1995-07-26 | 1997-02-10 | Ishikawajima Constr Materials Co Ltd | Segment and lining method using the segment |
| WO2016095631A1 (en) * | 2014-12-15 | 2016-06-23 | 中铁第四勘察设计院集团有限公司 | Support structure for tunnel having ultra-large variable section |
| JP6147818B2 (en) * | 2015-08-04 | 2017-06-14 | 大成建設株式会社 | Large section tunnel construction method and large section lining body |
| CN105041345B (en) * | 2015-08-18 | 2016-04-06 | 山东大学 | Dash forward water burst life cycle management administering method in a kind of tunnel |
| JP2017096069A (en) * | 2015-11-27 | 2017-06-01 | 鹿島建設株式会社 | Tunnel lining concrete construction method and tunnel lining concrete construction structure |
| CN111472812A (en) * | 2020-04-24 | 2020-07-31 | 重庆交通建设(集团)有限责任公司 | Construction method for filling and pouring concrete into inverted arch of tunnel |
-
2022
- 2022-03-30 CN CN202210324776.3A patent/CN114704297B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658447A (en) * | 2022-03-30 | 2022-06-24 | 中铁二十局集团第五工程有限公司 | Tunnel inverted arch construction die carrier structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114704297A (en) | 2022-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101864959B (en) | Method for tunneling construction of main structure of underground station | |
| CN102635118B (en) | Square steel pipe concrete supporting structure for foundation pit support | |
| CN109505609B (en) | Bracket-free construction method for underground comprehensive pipe rack of shallow-buried underground excavation city and comprehensive pipe rack | |
| CN104631666A (en) | Waterproof radioresistant construction technique of internally installed steel plates in super-thick wall body | |
| CN104131704A (en) | Steel pipe column concrete lateral pouring method and steel pipe column structure used in method | |
| CN210086295U (en) | Compound assembled underground structure | |
| CN103306463B (en) | Metal liner concrete air channel construction method | |
| CN112780305A (en) | Reinforcing structure for shield overlapping subway tunnel and reinforcing method thereof | |
| CN115434455A (en) | Assembled close-spliced shell system concrete shear wall structure and design method | |
| CN105604091B (en) | A kind of cap excavation method cover system construction method | |
| CN114704297B (en) | Integral inverted arch structure of tunnel and construction process thereof | |
| CN108708736B (en) | Shield cutter head manhole assembly type construction method | |
| CN103132465A (en) | Underground box culvert constructing method closely attached to pile foundation bearing platform | |
| CN210529747U (en) | Composite assembly type integral prefabricated middle longitudinal beam of subway station and node of longitudinal beam and steel upright post | |
| CN203834809U (en) | Steel pipe column structure for steel pipe column concrete side pouring method | |
| CN110205943A (en) | The construction method of prefabricated freely-supported small box girder end floor beam | |
| CN215979399U (en) | Middle hole method mid-partition wall lining construction rack | |
| CN105298147A (en) | Ultra-deep foundation pit spiral descending quick material transportation passage and construction method thereof | |
| CN216110754U (en) | Assembled inverted arch curved surface attaching template for highway tunnel | |
| CN210086294U (en) | Subway station assembled rail top air duct and connecting node with prefabricated medium plate | |
| KR100894118B1 (en) | Side mold for tunnel lining form and manufacturing method thereof | |
| CN217028898U (en) | Subway entrance and exit increases strong structure system of opening a hole | |
| CN205712125U (en) | A kind of pattern foundation pit supporting structure and basement side wall external mold integral structure | |
| CN211257092U (en) | Assembled utility tunnel movement joint waterproof construction | |
| CN114233302B (en) | Arch cover construction method suitable for underground excavation station |
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 | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ji Weiqing Inventor after: Duan Wuquan Inventor after: Li Chaocheng Inventor after: Leng Zhihua Inventor after: Zhang Xiangqian Inventor after: Geng Guoqiang Inventor after: Yin Jinglong Inventor after: Li Xian Inventor before: Ji Weiqing Inventor before: Duan Wuquan Inventor before: Li Chaocheng Inventor before: Leng Zhihua Inventor before: Zhang Xiangqian Inventor before: Geng Guoqiang Inventor before: Yin Jinglong Inventor before: Li Xian |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |