CN111472816A - Construction method of corrugated plate supporting structure and subway transverse channel - Google Patents
Construction method of corrugated plate supporting structure and subway transverse channel Download PDFInfo
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- CN111472816A CN111472816A CN202010422301.9A CN202010422301A CN111472816A CN 111472816 A CN111472816 A CN 111472816A CN 202010422301 A CN202010422301 A CN 202010422301A CN 111472816 A CN111472816 A CN 111472816A
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- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/20—Special cross- sections, e.g. corrugated
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- 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
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- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
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Abstract
The invention relates to the field of subway channel support, in particular to a construction method of a corrugated plate support structure and a subway transverse channel. The construction method of the corrugated plate supporting structure comprises the following steps: firstly, breaking the upper step of the ingate; step two, erecting a top step truss annular waist beam; step three, erecting an upper step corrugated plate, erecting an upper step annular waist beam and installing longitudinal channel steel; step four, stopping construction after the upper step is constructed for a certain distance; fifthly, breaking the lower step of the ingate; step six, erecting a top step truss annular waist beam; step seven, erecting an upper step corrugated plate, erecting an upper step annular waist beam and installing longitudinal channel steel; step eight, backfilling grouting at the back of the corrugated plate after forming a ring into a single truss; step nine, the step one to the step eight are circulated. According to the invention, through the arrangement of the inner supporting ring belt and the outer supporting ring beam, the overall supporting strength of the transverse channel is greatly improved, and the supporting effect of the transverse channel is ensured.
Description
Technical Field
The invention relates to the field of subway channel support, in particular to a construction method of a corrugated plate support structure and a subway transverse channel.
Background
The subway crosswalk construction needs to use steel grating and shotcrete to carry out preliminary bracing when the construction, and this kind of supporting mode uses electric welding, spray anchor mixture can produce smog, dust pollution to the surrounding environment in the use, and in addition, traditional preliminary bracing mode compares with assembled supporting mode, and the process is various, and the efficiency of construction is at the bottom, influences the construction progress.
However, the assembled supporting mode has relatively low supporting strength due to the spliced annular structure.
Disclosure of Invention
The invention aims to provide a construction method of a corrugated plate supporting structure and a subway transverse passage, which can effectively improve the supporting strength of an assembled supporting mode.
The embodiment of the invention is realized by the following steps:
a construction method of a corrugated plate supporting structure comprises the following steps:
firstly, breaking the upper step of the ingate;
step two, erecting a top step truss annular waist beam;
step three, erecting an upper step corrugated plate, erecting an upper step annular waist beam and installing longitudinal channel steel;
step four, stopping construction after the upper step is constructed for a certain distance;
fifthly, breaking the lower step of the ingate;
step six, erecting a top step truss annular waist beam;
step seven, erecting an upper step corrugated plate, erecting an upper step annular waist beam and installing longitudinal channel steel;
step eight, backfilling grouting at the back of the corrugated plate after forming a ring into a single truss;
step nine, the step one to the step eight are circulated.
In the preferred embodiment of the invention, in the third step, the corrugated plate erection and the annular waist beam erection are carried out for cycle construction.
In the preferred embodiment of the invention, in the third step, after the annular waist rail is erected, the foot-contracting anchor rods are arranged.
In a preferred embodiment of the invention, when the corrugated board frame on the upper step in the third step is used, a temporary support is additionally arranged on the upper step, and two sides of the temporary support are connected with the annular waist beam.
In the preferred embodiment of the present invention, the temporary support is padded and the actual height can be adjusted by using a jack.
In the preferred embodiment of the invention, in the third step, the corrugated plate at the arching line position is connected with the waist rail node in a three-side socket mode.
In the preferred embodiment of the present invention, in the fourth step, the certain distance for constructing the upper step is 2 meters to 5 meters.
In a preferred embodiment of the present invention, the corrugated plates are provided with flanges, and when the upper stepped corrugated plate or the lower stepped corrugated plate is erected, the flanges of the adjacent corrugated plates are connected by using bolts, so that the erection of the corrugated plates is realized.
In the preferred embodiment of the invention, when the adjacent corrugated plates are connected, a sealing gasket is arranged between the two flange plates which are connected by the bolts and is used for preventing water seepage between the corrugated plates.
A subway crossroad is constructed by using the construction method of the corrugated plate supporting structure.
The embodiment of the invention has the beneficial effects that:
through the arrangement of the inner supporting ring belt and the outer supporting ring beam, the overall supporting strength of the transverse passage is greatly improved, and the supporting effect of the transverse passage is guaranteed.
The arrangement of the annular plate belt and the annular waist beam of the inner supporting ring belt ensures that the inner supporting ring belt can support in a large area, a large amount of outer supporting ring beams are not needed, and the cost is reduced on the same premise of ensuring the supporting strength.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a flow chart of a construction process of a corrugated plate supporting structure according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a corrugated plate supporting structure according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is a schematic view of a connection structure between an outer supporting ring beam and an inner supporting ring band of a corrugated plate supporting structure according to an embodiment of the present invention;
fig. 5 is a structural view illustrating a cross beam or a vertical beam of a corrugated plate supporting structure according to an embodiment of the present invention;
fig. 6 is a schematic view showing the positions of end plates of cross beams or vertical beams of a corrugated plate supporting structure according to an embodiment of the present invention;
fig. 7 is a schematic view of a mounting structure between a cross beam and a vertical beam in a corrugated plate supporting structure according to an embodiment of the present invention;
fig. 8 is a structural view illustrating a steel support of a corrugated plate support structure in a tunnel preliminary stage according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an adjusting device of a tunnel preliminary corrugated plate supporting structure according to an embodiment of the present invention;
fig. 10 is a reference view illustrating a state in which a steel support of a corrugated plate support structure for a tunnel according to an embodiment of the present invention is used.
In the figure:
1: a cross beam; 2: erecting a beam; 3: an inner support ring belt; 4: grouting layer; 5: a corrugated plate; 6: an annular waist rail; 7: an outer connecting plate; 8: i-shaped steel; 9: an end plate; 10: mounting holes; 11: a base; 12: an adjustment device; 13: vertical support; 14: transversely supporting; 15: core soil; 16: pressure-reducing tank, 17: an upper plate; 18: fixing the rod; 19: fixing the sleeve; 20: a lower plate; 21: a lower adjustment lever; 22: an adjustment sleeve; 23: an upper adjusting rod; 24: rotating the hoop; 25: and (4) longitudinal channel steel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The construction process of the corrugated plate supporting structure comprises the following steps:
1. reinforcing a ingate;
2. breaking the upper step of the ingate;
3. erecting an annular waist beam of the first roof truss of the upper step, and drilling a foot locking anchor rod;
4. erecting a corrugated plate of an upper step, erecting an annular waist beam 6 of the upper step, driving a foot locking anchor rod on the annular waist beam 6, and installing longitudinal channel steel, (circularly constructing the content of the third part);
5. erecting a temporary support;
6. stopping the upper step construction by advancing by about 3 m;
7. breaking the lower step of the ingate;
8. erecting a first annular waist beam of the lower step, forming a ring with the annular waist beam 6 of the upper step, and drilling a foot locking anchor rod;
9. erecting a corrugated plate of a lower step, erecting an annular waist beam 6 of the lower step, drilling a foot locking anchor rod on the annular waist beam 6, installing a longitudinal channel steel 25, and backfilling and grouting after each ring is formed into one truss and the back is supported for the first time;
10. dismantling the temporary support;
11. the upper and lower steps are constructed forwards circularly.
Corrugated plate supporting construction, the process is simple, the effectual improvement of efficiency of construction, main flow is: earth excavation, corrugated plate installation (bolt connection), primary support and back backfilling and grouting.
Adopt buckled plate supporting construction to be under construction, effectively solved the loaded down with trivial details problem of traditional construction process, improve the efficiency of construction, reduce the cost of labor for the production progress.
Step mounting on the first roof truss: 1 point is arranged at the upper part of the arch crown, 1 point is respectively arranged above the step arch feet on the two sides, and the position of the first truss ring waist beam is determined by the downward return values of the 3 points.
In the present invention, when the corrugated plate is installed and constructed, the temporary support 24 may be added on the upper step in consideration of the subsidence of the arch, and as shown in fig. 8 and 10, the two sides of the temporary support 24 are provided with gusset plates bolted to the girth beam gusset plates. The lower parts of the corrugated plate arch feet and the temporary supports are all required to be tamped, and after the lower step corrugated plate forms a ring, the lower step corrugated plate is temporarily used for dismantling the supports for alternate use.
Through the setting of interim support, can improve and execute and do the precision, reduce simultaneously and subside.
Specifically, as shown in fig. 8, the temporary support includes a transverse support 14 and a vertical support 13, the transverse support 14 is located on the core soil 15, a decompression groove 16 is arranged below the core soil 15, the vertical support 13 is vertically arranged on the transverse support 14, two sides of the transverse support 14 and the top of the vertical support 13 are both provided with a base 11, and the base 11 supports the corrugated plate 5.
The temporary support is only applied when the structure is not looped, and for the sake of recycling, an adjusting device 12 is provided between the base 11 and the steel support, and the support length is adjusted by hand.
Specifically, as shown in fig. 9, the adjusting device 12 includes an upper plate 17, a lower plate 20, a fixing sleeve 19, a fixing rod 18, an upper adjusting rod 23, a lower adjusting rod 22, and an adjusting sleeve 22.
The upper plate 17 and the lower plate 20 are oppositely arranged in parallel, a plurality of fixing rods 18 are arranged on the upper plate 17, a plurality of fixing sleeves 19 are arranged on the lower plate 20, and the fixing sleeves 19 are sleeved on the fixing rods 18; go up adjusting pole 23 and fixedly set up on upper plate 17, lower adjusting pole 22 is fixed to be set up on hypoplastron 20, adjusting sleeve 22's upper end and last adjusting pole 23 threaded connection, adjusting sleeve 22's lower extreme and lower adjusting pole 22 rotate to be connected, through the mode of threaded screw, realize the interval between upper plate 17 and the hypoplastron 20 and adjust, and then can be convenient for steel shotcrete's dismantlement and fixed, realize reuse.
More specifically, the lower adjusting rod 22 is provided with a rotating hoop 24, the rotating hoop 24 protrudes externally, and the rotating hoop 24 is provided with steel balls, so that the rotating effect of the adjusting sleeve 22 is ensured, and the adjusting sleeve 22 can be axially positioned.
The arched line position corrugated plate is connected with the ring waist beam node in a three-surface socket mode; the corrugated plates and the joints of the ring waist beams at other parts are staggered, and the bolt holes are properly encrypted and adjusted at the joints of the ring waist beams.
Corrugated plate supporting construction just controls from processing the buckled plate, and the buckled plate adopts factory formula digit control machine tool processing, and the hole etc. are reserved to mechanical control log unloading, panel roll extrusion one-tenth wave form, ring flange laser cutting shaping, laser cutting, and the numerical control processing control parameter precision is higher than grid bow member machining precision, and the precision height of buckled plate has reduced the error probability in the installation.
The corrugated plate is installed and connected by adopting the flange plates to be connected through bolts, so that the installation size is determined more easily, and the construction precision is improved.
The buckled plate supporting construction, the buckled plate adds man-hour according to the design drawing and reserves the slip casting joint of backfilling in mill, and the buckled plate is installed according to the drawing, when the mileage of backfill slip casting is reachd, but on-the-spot lug connection backfill slip casting coupling, carries out the backfill slip casting behind the primary support back, improves efficiency of construction and construction accuracy, standardization.
In the construction of buckled plate supporting construction, ooze from buckled plate ring flange piece for solving groundwater, increase waterproof cushion in buckled plate ring flange piece department to in time carry out the initial stage and backfill the slip casting behind one's back at the in-process of buckled plate construction, at the inboard vertical channel-section steel of installation of buckled plate, prevent that the buckled plate from taking place inhomogeneous settlement, cause ring flange piece department infiltration, guarantee tunnel construction's security.
The structures used in some embodiments of the invention are described in detail below with reference to fig. 2-7. In the following embodiments and examples, features may be combined with each other or the features may be combined with each other in the above embodiments and examples, without conflict.
A corrugated plate supporting structure comprises an inner supporting ring belt 3 and an outer supporting ring beam; the inner supporting ring belt 3 is arranged in the outer supporting ring beam, and the inner wall of the inner supporting ring belt 3 is tangent to the inner wall of the outer supporting ring beam; the inner supporting ring belt 3 comprises n supporting plate belts and n +1 annular waist beams 6, and the supporting plate belts are arranged between the two adjacent annular waist beams 6; the annular waist beams 6 at the two ends of the inner supporting ring belt 3 are connected with the outer supporting ring beam.
In this embodiment, through the setting of interior supporting clitellum 3 and outer supporting girth beam for inside and outside combination can effectual increase buckled plate supporting construction's stability and strut intensity.
Specifically, in this embodiment, the inner supporting girdle 3 includes a supporting plate strip and an annular waist rail 6, the supporting plate strip mainly plays a role of large-area supporting, and the annular waist rail 6 is equivalent to a framework of the inner supporting girdle 3, and can play a role of improving a supporting force and stability.
In the specific installation process, two ends of each supporting plate belt are fixedly connected with the annular waist beam 6, namely the installation sequence is the structure of the annular waist beam 6, the supporting plate belt, the annular waist beam 6, the supporting plate belt and the annular waist beam 6, namely the annular waist beams 6 are arranged at two ends of the inner supporting ring belt 3, and the annular waist beams 6 are fixedly connected with the outer supporting ring beam, so that the connection strength and the connection stability are ensured.
In the present embodiment, the number of the ring-shaped wales 6 included in each inner support ring 3 is not necessarily the same, but the number of the ring-shaped wales 6 in each inner support ring 3 is one more than the number of the support plate strips, so as to ensure the connection strength and the connection stability between the support plate strips and the outer support ring beams.
When the corrugated plate supporting structure is used, after the outer supporting ring beam and the inner supporting ring belt 3 are installed on the outer wall, grouting is conducted on the outer side of the integral corrugated plate supporting structure through the opening in the inner supporting ring belt 3 to form a grouting layer 4, at the moment, the mortar on the grouting layer 4 can fix the whole outer supporting ring beam, and due to the fixed connection between the inner supporting ring belt 3 and the outer supporting ring beam, the stability of the inner supporting ring belt 3 is greatly improved, and the supporting strength and the supporting effect of a transverse channel are greatly improved.
In the preferred embodiment of the present invention, the supporting plate belt comprises a plurality of corrugated plates 5, and the corrugated plates 5 are connected in sequence to form a ring.
In this embodiment, the supporting plate strip is an annular band-shaped structure formed by connecting a plurality of corrugated plates 5 in sequence.
The primary corrugated plate supporting structure system taking the corrugated plate 5 as a main stress member has the advantages that the corrugated plate 5 has unique structural advantages, the axial direction and the radial direction of the corrugated plate are supported in a bidirectional mode, and the radial rigidity of the structure is improved. The longitudinal ripple can also play a role in displacement compensation, so that the device can better adapt to the uneven deformation of surrounding rocks, particularly for an underground tunnel, the larger deformation of the surrounding rocks can play the advantages of the 5-ring and longitudinal bidirectional bearing of the corrugated plate, the load effect of vertical soil pressure is dispersed, the whole flexible bearing greatly improves the shock resistance and fatigue performance of the structure, and the isotropic characteristics of steel are fully exerted. When the corrugated plate 5 is used as a plate supporting structure, the section types (horseshoe shape, pear shape, tubular shape, box shape, circular shape and the like) of different section forms can be adjusted according to the stratum characteristics and the use requirements.
In the preferred embodiment of the invention, the inner wall of the inner supporting ring belt 3 is also provided with an axial fixed beam which is fixedly connected with the annular waist beam 6.
Through the setting of axial fixation roof beam, link together adjacent annular waist rail 6, form a complete skeleton texture, can effectual increase interior support clitellum 3 support intensity and support stability.
Specifically, the axial fixing beams may be arranged in two ways, one way is that both ends of the axial fixing beam are respectively and fixedly connected with the side walls of the annular waist beam 6 connected with the corrugated plates 5, and the other way is that the length of the axial fixing beam is the same as the width of the inner supporting ring belt 3, and the axial fixing beam is fixedly arranged on the inner side of the annular waist beam 6 and connected with all the annular waist beams 6.
More specifically, in the present embodiment, the fixing connection between the axial fixing beam and the ring-shaped wale 6 may be a bolt connection, or may be a welding, riveting, or the like, as long as the axial fixing beam can be fixedly disposed on the ring-shaped wale 6.
In the preferred embodiment of the invention, the length direction of the axial fixing beam is parallel to the axis of the supporting ring belt, that is, the axial fixing beam is perpendicular to the annular waist beam 6, so that the strength and stability of the whole inner supporting ring belt 3 can be ensured to the greatest extent.
It should be noted that the axial fixing beam and the ring-shaped waist beam 6 may be vertical or not, and they may be set according to the concrete condition of the transverse passage as long as the supporting strength of the inner supporting ring belt 3 can be ensured.
In the preferred embodiment of the invention, the outer supporting ring beam comprises a cross beam 1 and a vertical beam 2, and the cross beam 1 and the vertical beam 2 are connected in sequence to form a square ring beam.
Specifically, the outer supporting ring beam is provided with two cross beams 1 and two vertical beams 2, and during specific installation, as shown in fig. 3, the cross beams 1 and the vertical beams 2 are fixedly connected with an annular waist beam 6 at the end part of the inner supporting ring belt 3.
In this embodiment, the specific fixing manner is a bolt connection.
It should be noted that the fixed connection between the cross beam 1 and the annular wale 6 and the fixed connection between the vertical beam 2 and the annular wale 6 may be bolt connection, or may be other fixed connection methods such as riveting, welding, and the like.
More specifically, after the inner supporting ring belt 3 and the outer supporting ring beam are installed, because the annular wale 6 is arc-shaped and the cross beam 1 and the vertical beam 2 are linear, after the two are fixedly connected, a gap is formed between the two annular wales 6, and further, partial positions cannot be supported.
In order to avoid the above situation, in this embodiment, the specially-shaped annular waist rail 6 is disposed between two adjacent annular waist rails 6 at the position, that is, the whole annular waist rail 6 is partially cut off to form an arc waist rail for supplementary support, two end portions of the arc waist rail are respectively fixedly connected with the inner side walls of the cross beam 1 and the vertical beam 2, and two opposite side walls of the arc waist rail are respectively fixedly connected with the annular waist rails 6, so as to ensure complete support of the transverse passage.
In the preferred embodiment of the invention, the cross beams 1 and the vertical beams 2 each comprise an internal profile and an external connecting plate 7; outer webs 7 are provided on opposite sides of the inner profile.
In this embodiment, crossbeam 1 and perpendicular roof beam 2 all include inside formation and outer joint plate 7, through outer joint plate 7's setting, can form a whole with a plurality of inside section bars, have guaranteed holistic support intensity.
Specifically, a plurality of internal profiles are arranged side by side and then connected by external connecting plates 7 arranged on opposite sides to form a complete whole.
In this embodiment, in order to facilitate the installation between crossbeam 1 and the vertical beam 2, be provided with end plate 9 at the tip of inside section bar, outer connecting plate 7, end plate 9, outer connecting plate 7 connect gradually, form U type structure, more can guarantee intensity and stability between a plurality of inside section bars.
As shown in fig. 7, when the cross beam 1 and the vertical beam 2 are fixedly connected, the end plate 9 of the cross beam 1 may be fixedly connected by a bolt after being abutted against the outer connecting plate 7 of the vertical beam 2.
More specifically, in the preferred embodiment of the invention, the inner section is a double split i-section 8.
In this embodiment, the strength of the i-steel 8 is relatively high, and the supporting requirement of the transverse passage can be met after the i-steel is doubly spliced.
Specifically, in the present embodiment, the upper and lower end surfaces of the i-steel 8 are fixedly connected to the outer connecting plate 7.
More specifically, in the preferred embodiment of the present invention, the outer connecting plate 7 is provided with mounting holes 10 for cooperating with bolts to realize connection with the inner support.
In order to reduce the number of the mounting holes 10 on the external connecting plate 7, in the embodiment, when the cross beam 1 or the vertical beam 2 is connected with the annular waist rail 6, the mounting holes 10 at the connecting position are arranged corresponding to the mounting holes 10 on the annular waist rail 6, and the mounting can be realized by using the same bolt.
In the preferred embodiment of the present invention, the vertical beam 2 is formed by splicing a plurality of vertical beams.
In normal cross aisle, generally speaking, highly relatively higher, and then the length of the perpendicular roof beam 2 that needs also can be longer, and then in order to be convenient for transport, in this embodiment, will erect roof beam 2 and set up to many concatenations and form.
Specifically, the shorter vertical beam 2 is prefabricated in a factory, transported to a construction site, and spliced to reach a preset height.
Because the supporting strength required by the cross beam 1 is large, in this embodiment, the cross beam 1 is generally not recommended to be spliced by a plurality of beams.
A subway crossroad constructed by the construction method according to any one of the above-mentioned methods.
The embodiment of the invention has the beneficial effects that:
through the arrangement of the inner supporting ring belt 3 and the outer supporting ring beam, the overall supporting strength of the transverse passage is greatly improved, and the supporting effect of the transverse passage is ensured.
The arrangement of the ring-shaped plate belt and the ring-shaped waist beam 6 of the inner supporting ring belt 3 ensures that the large-area supporting can be carried out, a large amount of outer supporting ring beams are not needed, and the cost is reduced on the same premise of ensuring the supporting strength.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A construction method of a corrugated plate supporting structure is characterized by comprising the following steps:
firstly, breaking the upper step of the ingate;
step two, erecting a top step truss annular waist beam;
step three, erecting an upper step corrugated plate, erecting an upper step annular waist beam and installing longitudinal channel steel;
step four, stopping construction after the upper step is constructed for a certain distance;
fifthly, breaking the lower step of the ingate;
step six, erecting a top step truss annular waist beam;
step seven, erecting an upper step corrugated plate, erecting an upper step annular waist beam and installing longitudinal channel steel;
step eight, backfilling grouting at the back of the corrugated plate after forming a ring into a single truss;
step nine, the step one to the step eight are circulated.
2. The construction method of a corrugated plate supporting structure according to claim 1, wherein the corrugated plate erection and the ring-shaped wale erection are performed in the third step, and the circulation construction is performed.
3. The construction method of a corrugated plate supporting structure according to claim 1, wherein in the third step, after the ring-shaped wale is erected, a foot-contracting anchor rod is drilled.
4. The construction method of a corrugated plate supporting structure according to claim 1, wherein a temporary support is added on the upper step when the corrugated plate frame of the upper step of the third step is erected, and both sides of the temporary support are connected with the annular waist rail.
5. The construction method of a corrugated plate supporting structure according to claim 4, wherein the lower side of the temporary support is tamped and an actual height can be adjusted by using a jack.
6. The construction method of a corrugated plate supporting structure according to claim 1, wherein in the third step, the corrugated plate at the arch line position is connected with the ring waist beam node in a three-side socket manner.
7. The construction method of a corrugated plate supporting structure according to claim 1, wherein a certain distance for constructing the upper step is 2 m to 5 m in the fourth step.
8. The method of constructing a corrugated plate supporting structure according to claim 1, wherein the corrugated plates are provided with flanges, and when the upper step corrugated plate or the lower step corrugated plate is erected, the flanges of the adjacent corrugated plates are connected by using bolts, thereby erecting the corrugated plates.
9. The corrugated plate supporting structure of claim 8, wherein a packing is provided between two flanges bolted to each other when the adjacent corrugated plates are coupled, for preventing water from being permeated between the corrugated plates.
10. A subway crossroad comprising a construction method using the corrugated plate supporting structure according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010422301.9A CN111472816A (en) | 2020-05-19 | 2020-05-19 | Construction method of corrugated plate supporting structure and subway transverse channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010422301.9A CN111472816A (en) | 2020-05-19 | 2020-05-19 | Construction method of corrugated plate supporting structure and subway transverse channel |
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| CN111472816A true CN111472816A (en) | 2020-07-31 |
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|---|---|---|---|
| CN202010422301.9A Pending CN111472816A (en) | 2020-05-19 | 2020-05-19 | Construction method of corrugated plate supporting structure and subway transverse channel |
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| Country | Link |
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| CN (1) | CN111472816A (en) |
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