CN111236304B - Assembled underground comprehensive pipe gallery and construction method - Google Patents
Assembled underground comprehensive pipe gallery and construction method Download PDFInfo
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- CN111236304B CN111236304B CN201911402823.6A CN201911402823A CN111236304B CN 111236304 B CN111236304 B CN 111236304B CN 201911402823 A CN201911402823 A CN 201911402823A CN 111236304 B CN111236304 B CN 111236304B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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Abstract
The embodiment of the invention discloses an assembled underground comprehensive pipe gallery, which comprises a comprehensive pipe gallery monomer, a connecting assembly and a supporting structure for supporting the comprehensive pipe gallery monomer, wherein the comprehensive pipe gallery monomer is arranged on a gallery foundation; the construction method comprises the following steps: step 100, driving a supporting sleeve into the mounting position of the selected comprehensive pipe gallery, and excavating an underground passage after the supporting sleeve is driven into the mounting position; step 200, pulling out the supporting sleeves one by one after the underground passage is excavated, pouring to form supporting sleeve columns after the supporting sleeves are pulled out, and building a supporting structure by taking the supporting sleeve columns as a basis; 300, paving a lower section of the gallery pipe on the formed supporting structure, paving a middle section of the gallery pipe by taking the lower section of the gallery pipe as a channel, and installing an upper section of the gallery pipe by a step-back method; step 400, carrying out secondary sealing treatment on the assembled comprehensive gallery pipes; according to the invention, the auxiliary structures such as the gallery foundation and the like are built while the supporting structure is built, so that the functions of the pipe gallery are reduced, and the self weight of the pipe gallery and the economic cost of construction and construction are reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of pipe galleries for building construction, in particular to an assembly type underground comprehensive pipe gallery and a construction method.
Background
Underground pipe gallery is also known as utility tunnel, is the construction in the city underground for concentrate on laying the public tunnel of municipal pipeline such as electric power, communication, radio and television, feedwater, underground pipe gallery can effectively stop "zip fastener road" phenomenon, lets the technical staff need not to excavate the road surface repeatedly, just can salvage, maintain, dilatation transformation etc. all kinds of pipelines in the pipe gallery, the time is salvageed to the pipeline that reduces greatly simultaneously, has obtained extensive use in the city construction.
The conventional prefabricated assembly underground pipe gallery structure is assembled, the assembled pipe gallery is placed into a pit and backfilled after the pit is dug underground in the assembling mode, and the process is long in construction period, large in equipment and manpower consumption and large in influence on surrounding buildings.
Assembled underground pipe gallery under prior art is tubular structure, need excavate ground, prefabricated gallery base at the in-process of construction installation, and rethread industrial machinery equipment hoists. In this kind of construction method now, construct through the open cut mode basically, but in current actual demand, the utility tunnel avoids receiving the influence and produces the hindrance effect to other municipal structures, generally the buried depth is in underground 30-40 meters, it is huge to adopt the open cut method to carry out construction work volume to this kind of degree of depth, and difficult construction, disturb too much to the building on every side, and still can destroy the structure on soil layer, make the piping lane weigh sharply to increase, destroy the piping lane easily, and can only improve the quality of piping lane under this kind of circumstances, this again can increase construction cost undoubtedly.
In order to overcome the defects, construction is carried out through an underground excavation method, but the defects also exist under the prior art conditions, namely the underground environment is complex, no enough operation space exists, construction and installation are inconvenient, in addition, because the dead weight of the pipe gallery is huge, in order to complete corresponding installation, a gallery foundation and an installation channel need to be separately built in the underground space, construction time is doubled for multiple times, the construction cost is increased sharply, the development and application of the pipe gallery are restricted, the existing underground excavation method does not support the channel, and the problem that the stratum gravity is directly applied to the pipe gallery also exists.
Disclosure of Invention
Therefore, the embodiment of the invention provides an assembly type underground comprehensive pipe gallery and a construction method, and aims to solve the problem that the structure and the construction mode of the pipe gallery in the prior art are mutually contradictory in structural technical requirements and construction cost.
In order to achieve the above object, an embodiment of the present invention provides the following:
a construction method of an assembled underground comprehensive pipe gallery comprises the following steps:
step 100, driving support sleeves into two sides of a selected installation position of the comprehensive pipe gallery from the ground according to the extending direction, and excavating an underground passage after the support sleeves are driven;
step 200, after the underground passage is excavated, gradually pulling out the supporting sleeves in stages in intervals by an interval method, pouring concrete immediately to form supporting sleeve columns when one supporting sleeve is pulled out, and establishing a supporting structure by taking each group of supporting sleeve columns as a basis;
300, paving the lower sections of the gallery pipes on the formed supporting structure, paving the middle sections of the gallery pipes on two sides by taking the lower sections of the gallery pipes as channels, and installing the upper sections of the gallery pipes by a step-back method;
and step 400, carrying out secondary sealing treatment on the assembled comprehensive gallery pipe.
As a preferable scheme of the present invention, in step 200, the method for pouring the supporting sleeve column specifically includes the steps of:
step 201, wrapping a pouring template on each exposed supporting sleeve in an underground passage, and gradually pulling out the supporting sleeves in different sections by a spacing method in stages;
202, plugging and planting bars after each supporting sleeve is pulled out, pouring from the ground, and vibrating and tamping in an underground passage to form supporting ribs when pouring to a pouring template;
and 203, forming anchoring piles for fixing the support ribs on the side walls of the underground passage in the form of anchor bars and grouting corresponding to each support rib.
As a preferred embodiment of the present invention, in step 300, the concrete method for laying the utility tunnel includes the following steps:
301, sequentially erecting lower sections of the gallery pipes at the central section of the U-shaped beam from the starting end until the lower sections of the gallery pipes of the whole underground passage are paved to form a temporary passage;
step 302, successively erecting middle sections of the gallery pipes on two sides on the basis of the temporary channel by using a starting end or a terminating end, successively laying the middle sections of the gallery pipes of the same comprehensive pipe gallery monomer on two sides, then laying the upper section of the gallery pipe of the previous comprehensive pipe gallery monomer, and successively finishing the laying of the whole gallery pipe according to the sequence;
in step 301 and step 302, the split-type connecting assemblies are mounted on the corresponding gallery pipes after each gallery pipe is erected, so that each connecting assembly can form a whole after the gallery pipes are assembled.
As a preferred scheme of the present invention, in step 302, the step of mounting the upper section of the gallery pipe in an annealing manner specifically comprises the following steps:
firstly, erecting the lower sections and the middle sections of the corridor pipes in the previous one or more comprehensive pipe corridor monomers according to the steps 301 and 302;
and then erect the individual corridor pipe upper segment of preceding utility tunnel on the free corridor pipe hypomere of back utility tunnel to adopt alternative mode to lay corridor pipe middle section and corridor pipe upper segment all the time at the in-process of erectting.
As a preferred scheme of the invention, when a plurality of single comprehensive pipe gallery bodies are erected, the method further comprises the step of carrying out primary sealing treatment on the adjacent single comprehensive pipe gallery bodies, and the method comprises the following specific steps:
calibrating the connecting assembly to enable the split structures of the connecting assembly to form a complete whole, and the gap error between the split structures is within a design accommodating range;
after the free erects of every completion utility tunnel, place seal assembly between adjacent utility tunnel monomer to compress seal assembly through shrink coupling assembling after erectting utility tunnel monomer and seal in order to realize sealing, and all seal through the mode of welding and pouring in this seal structure's inside and outside both sides.
In addition, the invention also provides an assembled underground comprehensive pipe gallery, which comprises a factory-prefabricated comprehensive pipe gallery single body, a connecting assembly for connecting the comprehensive pipe gallery single body and a supporting structure for supporting the comprehensive pipe gallery single body, wherein the comprehensive pipe gallery single body is arranged on a gallery foundation;
the comprehensive pipe rack monomer comprises a pipe rack upper section, a pipe rack middle section and a pipe rack lower section which are prefabricated by a factory, wherein the pipe rack upper section, the pipe rack middle section and the pipe rack lower section are all formed by field assembly, mounting ribs are arranged on the outer wall of the pipe rack upper section, connecting cavities are fixedly arranged at the outer ends of the pipe rack middle section, and a mounting column hole for being connected with a supporting sleeve column sleeve is formed in the center of each connecting cavity;
the supporting structure comprises a top arch mechanism for permanently supporting the underground passage at the top and a rigid supporting beam at the bottom.
As a preferred scheme of the invention, a plurality of groups of pipeline brackets for mounting strong electricity are arranged in the upper section of the pipe gallery;
the middle section of the pipe gallery is composed of secondary gallery pipes which are respectively arranged on two sides of the upper section of the pipe gallery, one secondary gallery pipe is internally divided into a weak current chamber and a municipal chamber through a partition plate, the other secondary gallery pipe is internally divided into a shielding chamber and a municipal chamber through a partition plate, the two municipal chambers are combined to form a whole, and the combined municipal chamber is positioned above the lower section of the pipe gallery;
the pipeline dredging device is characterized in that a lifting frame for arranging a pipeline is arranged in the lower section of the pipe gallery, a dredging channel is arranged at the bottom of the lifting frame, and a drainage pump is arranged on the dredging channel according to a set distance.
As a preferable scheme of the invention, a locking piece which is in locking connection with the supporting rib is fixedly installed on the periphery of the bottom of the installation column hole in the connection cavity, and a buffering ring cushion is arranged in the installation column hole.
As a preferred scheme of the present invention, the top arch mechanism is installed between two corresponding support ribs through hinges, a node beam perpendicular to the top arch mechanism is fixedly installed on the top arch mechanism, a plurality of groups of arc-shaped beams which are sequentially stacked are installed on the node beam along the top arch mechanism, the lengths of the arc-shaped beams are sequentially reduced from bottom to top, an elastic return spring tube is fixedly installed at an end of each arc-shaped beam, and a sliding sheet beam arranged on the arc-shaped beam is fixedly installed on each elastic return spring tube.
As a preferable scheme of the present invention, the rigid support beam includes a U-shaped beam having two ends disposed on the support rib, and the two ends of the U-shaped beam are both disposed on the support sleeve, and the joint between the support rib and the U-shaped beam is provided with a locking tooth and a locking groove which are correspondingly limited.
The embodiment of the invention has the following advantages:
according to the invention, the temporary support is formed directly in a support sleeve mode, the permanent support sleeve column and the support rib are formed by directly pouring after the underground passage is excavated, and the support sleeve column and the support rib are used as the foundation to construct the gallery foundation, the construction of the whole gallery foundation can be completed by one-time construction directly from the ground technically, and the erection, connection and sealing of the prefabricated comprehensive pipe gallery monomer are completed in an assembly mode on the gallery foundation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1-a comprehensive pipe gallery monomer; 2-connecting the components; 3-supporting structure; 4-a connecting cavity; 5-a top arch mechanism; 6-rigid support beam; 7-node beam;
101-upper section of pipe gallery; 102-middle section of pipe gallery; 103-lower pipe gallery section; 104-mounting ribs; 105-a pipe rack; 106-secondary gallery pipes; 107-weak current chamber; 108-a municipal chamber; 109-a shielded chamber; 110-self dredging channels;
401-mounting post holes; 402-a lock;
601-U-shaped beam;
701-cambered surface beam; 702-elastic return reed pipe.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the invention provides a construction method of an assembly type underground comprehensive pipe gallery, which comprises the following steps:
step 100, driving support sleeves into two sides of the selected installation position of the comprehensive pipe gallery from the ground according to the extending direction, and excavating an underground passage after the support sleeves are driven.
In the present embodiment, the installation of the pipe gallery is performed by the underground excavation method, and thus, in order to secure the stability of the soil layer and prevent the collapse during the underground excavation, which affects the underground work and the municipal activities on the ground, temporary support is required for the construction site.
The underground passage is defined by driving the supporting sleeve to stabilize the soil layer structure and separate the inner soil layer from the outer soil layer, so that the phenomena of underground collapse, ground collapse and the like caused by transverse movement of the soil layer due to the fact that the stress state is damaged by underground disturbance are avoided. The stability of constructing the supporting and protecting soil layer is to prevent the collapse on the one hand, and the stability soil layer on the other hand, so that other underground municipal works can be conveniently constructed, and a relatively independent structure is formed, thereby overcoming the defect that other underground municipal works can not be constructed around the existing pipe gallery construction area.
Step 200, after the underground passage is excavated, the supporting sleeves are gradually pulled out in different sections by stages by an interval method, concrete is poured immediately to form supporting sleeve columns when one supporting sleeve is pulled out, and a supporting structure is built by taking each group of supporting sleeve columns as a foundation.
In the embodiment, the supporting sleeves are gradually pulled out in stages at intervals by an interval method, so that the self structure of the soil layer is protected, the supporting force of the soil layer is improved, all gravity is prevented from being converted into overlying pressure, and the pressure on the pipe gallery and the supporting structure of the pipe gallery is reduced.
In step 200, the concrete steps of the method for pouring the supporting sleeve column are as follows:
step 201, wrapping a pouring template on each exposed supporting sleeve in an underground passage, and gradually pulling out the supporting sleeves in stages at intervals by an interval method, wherein the pouring template is wrapped, so that the passages generated by the supporting sleeves can be directly poured from the ground, and a perfect supporting structure is formed by matching with underground operation, and secondary construction from the underground is avoided;
202, plugging and embedding bars are firstly carried out after each supporting sleeve is pulled out, so that concrete loss caused by underground gaps and influence on the mechanical strength of concrete are avoided, the embedded bars are arranged according to a conventional mode according to design standards, then pouring is carried out from the ground, and when the supporting sleeves are poured to a pouring template, vibration tamping is carried out in an underground passage to form supporting ribs;
and 203, forming anchoring piles for fixing the support ribs on the side walls of the underground passage in the form of anchor bars and grouting corresponding to each support rib.
In step 203, the supporting structure is further reinforced with lateral holding power by means of anchoring piles on the side walls of the underpass in order to cooperate with the supporting structure. Therefore, the overlying pressure can be effectively converted to the whole space, and the soil layer structure at a certain position is prevented from being damaged by stress concentration.
It can be known to synthesize above supporting construction, still guarantee that whole soil layer is in very stable structure when reaching the soil layer to strut through supporting construction in this embodiment, can also pour the structures such as gallery base in the formation underground passage through supporting construction in addition on ground to reduce the underground construction volume, reduce construction cost and accelerate the construction progress.
In the embodiment, the supporting structure is characterized by being an independent whole, even if a plurality of supporting sleeve columns need to be dismantled in subsequent municipal works, the supporting structure does not have any influence on the underground pipe, the corresponding supporting structure can be reconstructed only by means of the supporting structure of the newly-built municipal works, and the influence of the self weight of the soil layer on the pipe gallery is also reduced.
And 300, paving the lower sections of the gallery pipes on the formed supporting structure, paving the middle sections of the gallery pipes on two sides by taking the lower sections of the gallery pipes as channels, and installing the upper sections of the gallery pipes by a step-back method.
In the invention, a laying channel is not required to be independently constructed, the lower section of the corridor pipe laid in advance is directly used as the channel to carry out integral laying, and the construction mode of directly applying the lower section of the corridor pipe is further explained in the following by combining the specific structure of the corridor pipe.
In step 300, the concrete method for laying the comprehensive pipe gallery comprises the following steps:
301, sequentially erecting lower sections of the gallery pipes at the central section of the U-shaped beam from the starting end until the lower sections of the gallery pipes of the whole underground passage are paved to form a temporary passage;
step 302, successively erecting middle sections of the gallery pipes on two sides on the basis of the temporary channel by using a starting end or a terminating end, successively laying the middle sections of the gallery pipes of the same comprehensive pipe gallery monomer on two sides, then laying the upper section of the gallery pipe of the previous comprehensive pipe gallery monomer, and successively finishing the laying of the whole gallery pipe according to the sequence;
in step 301 and step 302, the split-type connecting assemblies are mounted on the corresponding gallery pipes after each gallery pipe is erected, so that each connecting assembly can form a whole after the gallery pipes are assembled.
In step 300, due to the split-type pipe rack structure adopted in the present invention, in order to ensure the sealing performance of the entire utility pipe rack, the integrity of the connection assembly and the sealing assembly needs to be ensured, so as to ensure the reliability and the continuity of the sealing performance.
In step 302, the step-back method for installing the upper section of the gallery pipe comprises the following specific steps:
firstly, erecting the lower sections and the middle sections of the corridor pipes in the previous one or more comprehensive pipe corridor monomers according to the steps 301 and 302;
and then erect the individual corridor pipe upper segment of preceding utility tunnel on the free corridor pipe hypomere of back utility tunnel to adopt alternative mode to lay corridor pipe middle section and corridor pipe upper segment all the time at the in-process of erectting.
In this embodiment, the essence of the installation of stepping back method is that postpone a utility tunnel monomer or a plurality of utility tunnel monomers with the free upper segment part of same utility tunnel and install, and the advantage of this kind of mounting means lies in can providing sufficient space for the free installation of other utility tunnels, can not form the restriction to the construction operation, and secondly, overcomes the defect that conventional mounting means can not carry out manual adjustment and focus.
In the invention, when a plurality of single comprehensive pipe gallery bodies are erected, the method also comprises the primary sealing treatment of the adjacent single comprehensive pipe gallery bodies, and comprises the following specific steps:
calibrating the connecting assembly to enable the split structures of the connecting assembly to form a complete whole, and the gap error between the split structures is within a design accommodating range;
after the free erects of every completion utility tunnel, place seal assembly between adjacent utility tunnel monomer to compress seal assembly through shrink coupling assembling after erectting utility tunnel monomer and seal in order to realize sealing, and all seal through the mode of welding and pouring in this seal structure's inside and outside both sides.
And step 400, carrying out secondary sealing treatment on the assembled comprehensive gallery pipe.
The construction method of the comprehensive pipe gallery is remarkably characterized by comprising the following two aspects:
firstly, a supporting mechanism penetrating through the whole pipe gallery is constructed on the ground, so that the supporting mechanism not only supports the soil layer of the whole area, but also provides a gallery foundation for installing the pipe gallery, and a temporary channel is constructed by matching with a partial structure of the pipe gallery, the gallery foundation and a channel for laying the gallery pipes are not required to be additionally constructed, the construction process and the workload are reduced, and the working efficiency is improved;
and secondly, the installation of the sub-steps is carried out on the pipe gallery, the installation efficiency can be improved, the sealing treatment of the pipe gallery is facilitated from the inner layer surface and the outer layer surface, and the sealing effect is improved.
In addition, the invention also provides an assembly type underground comprehensive pipe gallery, which comprises a factory-prefabricated comprehensive pipe gallery single body 1, a connecting assembly 2 used for connecting the comprehensive pipe gallery single body 1, and a supporting structure 3 used for supporting the comprehensive pipe gallery single body 1, wherein the comprehensive pipe gallery single body 1 is arranged on a gallery foundation.
The gallery foundation is essentially a supporting structure, the gallery foundation is constructed by comprehensively utilizing the stable structure of the supporting structure, abnormal phenomena such as settlement and the like in the later period of the gallery foundation are avoided, and due to the arrangement of the protective structure and the supporting structure, the pipe gallery has strong disaster resistance and cannot be easily broken, and compared with the existing direct-buried installation mode, the process can better protect the pipe gallery.
Wherein, a plurality of groups of pipeline brackets 105 for mounting strong electricity are arranged in the pipe gallery upper section 101;
the middle pipe gallery section 102 is composed of secondary gallery pipes 106 which are respectively arranged on two sides of the upper section of the pipe gallery, wherein one secondary gallery pipe 106 is divided into a weak current chamber 107 and a municipal chamber 108 through a partition plate, the other secondary gallery pipe 106 is divided into a shielding chamber 109 and a municipal chamber 108 through a partition plate, the two municipal chambers 108 are combined to form a whole, and the combined municipal chamber 108 is positioned above the lower pipe gallery section 103;
a lifting frame for arranging pipelines is arranged in the lower section 103 of the pipe gallery, an automatic dredging channel 110 is arranged at the bottom of the lifting frame, and a drainage pump is arranged on the automatic dredging channel 110 according to a set distance.
In the aforesaid, conventional piping lane is cylindric or standard rectangle, and realizes forceful electric power, weak current and municipal separation in this embodiment, can carry out corresponding operation in exclusive passageway separately, to the passageway that has special demand, can set up in the shielding cavity moreover to satisfy different demands, improve the in-service use benefit of piping lane.
All be provided with installation rib 104 on the pipe gallery upper segment 101 outer wall, the equal fixed mounting in outer end of pipe gallery middle section 102 has connection chamber 4 the center of connecting chamber 4 is provided with and is used for establishing the erection column hole 401 of being connected with the support sleeve post cover.
Connecting chamber 4 is specially designed for installation piping lane upper segment 101, in this embodiment, is connected with the support sleeve post through installing column hole 401 on connecting chamber 4 and forms the integral structure, will not dismantle after the complete molding again, guarantees whole piping lane structure's stability and reliability.
And locking pieces 402 which are in locking connection with the supporting ribs are fixedly arranged on the periphery of the bottom of the mounting column hole 401 in the connecting cavity 4, and a buffering ring cushion is arranged in the mounting column hole 401.
The supporting structure 3 comprises a roof arch mechanism 5 at the top for permanently supporting the underground passage and rigid support beams 6 at the bottom.
In this embodiment, through the top arch mechanism 5 and the rigid support beam 6 that set up, with whole piping lane totally enclosed this have powerful stress protection structure to avoid the piping lane to receive direct pressure influence, in this embodiment, with the function separation of piping lane, got rid of the rigid support ability of current piping lane promptly, thereby can reduce the dead weight of piping lane by a wide margin, the installation of the piping lane of being convenient for.
In this embodiment, the top arch mechanism 5 is installed between two corresponding support ribs by a hinge, and the top arch structure of the top arch mechanism 5 transmits the overlying pressure to the support sleeve column, so as to protect the pipe gallery at the top, and in this embodiment, in order to reduce the direct pressure of the overlying pressure on the top arch mechanism and the support sleeve column, a node beam 7 perpendicular to the top arch mechanism 5 is fixedly installed on the top arch mechanism 5, a plurality of groups of arc beams 701 sequentially stacked along the top arch mechanism 5 are installed on the node beam 7, the length of each arc beam 701 is sequentially shortened from bottom to top, an elastic return spring tube 702 is fixedly installed at the end of each arc beam 701, and a sliding sheet beam 703 arranged on each arc beam 701 is fixedly installed on each elastic return spring tube 702.
In this embodiment, the active disturbance can be converted into elastic potential energy through the arranged sliding-vane beam 703 to offset, and the elastic potential energy can be recovered when the disturbance is performed again, so that the influence of dynamic transverse shear force and vertical load on the top arch mechanism and the supporting sleeve column is avoided, and the supporting reliability is improved. This is because the concrete supporting structure has strong pressure resistance and weak shear resistance, and long-term dynamic disturbance will destroy the internal structure of the concrete support, so that the supporting capability is reduced. The construction of the invention can perfectly overcome the problem by constructing the characteristics and combining with a three-dimensional supporting structure, so that the pipe gallery is in underground depth, and the underground municipal engineering can be normally involved in the rich interval from the ground to the pipe gallery as required, thereby improving the application rate of underground space.
The U-shaped beam 601 in the invention plays a role of a gallery foundation, namely, the lower section of the gallery pipe is arranged on the U-shaped beam 601 to form a temporary laying channel, and all mechanical equipment can be installed through the laying channel, so that the gallery foundation and the corresponding laying channel do not need to be built again, and the gallery pipe structure is directly utilized.
The corridor pipe can be utilized in the embodiment, mainly the whole corridor pipe is constructed into a split type structure, and the split type structure can be installed successively, so that the corridor pipe does not need to be limited in limited corridor pipe space to be paved and installed, the self structure of the corridor pipe can be comprehensively utilized, a corresponding channel does not need to be constructed independently, the paving progress is accelerated, and the construction cost is reduced.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. The construction method of the assembled underground comprehensive pipe gallery is characterized by comprising the following steps:
step 100, driving support sleeves into two sides of a selected installation position of the comprehensive pipe gallery from the ground according to the extending direction, and excavating an underground passage after the support sleeves are driven;
step 200, after the underground passage is excavated, gradually pulling out the supporting sleeves in stages in intervals by an interval method, pouring concrete immediately to form supporting sleeve columns when one supporting sleeve is pulled out, and establishing a supporting structure by taking each group of supporting sleeve columns as a basis;
300, paving the lower sections of the gallery pipes on the formed supporting structure, paving the middle sections of the gallery pipes on two sides by taking the lower sections of the gallery pipes as channels, and installing the upper sections of the gallery pipes by a step-back method;
and step 400, carrying out secondary sealing treatment on the assembled comprehensive gallery pipe.
2. The construction method of the fabricated underground comprehensive pipe gallery according to claim 1, wherein in the step 200, the concrete steps of the pouring method of the support sleeve column are as follows:
step 201, wrapping a pouring template on each exposed supporting sleeve in an underground passage, and gradually pulling out the supporting sleeves in different sections by a spacing method in stages;
202, plugging and planting bars after each supporting sleeve is pulled out, pouring from the ground, and vibrating and tamping in an underground passage to form supporting ribs when pouring to a pouring template;
and 203, forming anchoring piles for fixing the support ribs on the side walls of the underground passage in the form of anchor bars and grouting corresponding to each support rib.
3. The construction method of the fabricated underground utility tunnel according to claim 1, wherein the concrete method for laying the utility tunnel in the step 300 comprises the following steps:
301, sequentially erecting lower sections of the gallery pipes at the central section of the U-shaped beam from the starting end until the lower sections of the gallery pipes of the whole underground passage are paved to form a temporary passage;
step 302, successively erecting middle sections of the gallery pipes on two sides on the basis of the temporary channel by using a starting end or a terminating end, successively laying the middle sections of the gallery pipes of the same comprehensive pipe gallery monomer on two sides, then laying the upper section of the gallery pipe of the previous comprehensive pipe gallery monomer, and successively finishing the laying of the whole gallery pipe according to the sequence;
in step 301 and step 302, the split-type connecting assemblies are mounted on the corresponding gallery pipes after each gallery pipe is erected, so that each connecting assembly can form a whole after the gallery pipes are assembled.
4. The construction method of the fabricated underground utility tunnel according to claim 3, wherein in the step 302, the concrete steps of installing the upper section of the tunnel pipe in an annealing way are as follows:
firstly, erecting the lower sections and the middle sections of the corridor pipes in the previous one or more comprehensive pipe corridor monomers according to the steps 301 and 302;
and then erect the individual corridor pipe upper segment of preceding utility tunnel on the free corridor pipe hypomere of back utility tunnel to adopt alternative mode to lay corridor pipe middle section and corridor pipe upper segment all the time at the in-process of erectting.
5. The construction method of the fabricated underground comprehensive pipe gallery according to claim 4, characterized by further comprising the step of carrying out primary sealing treatment on the adjacent single comprehensive pipe gallery bodies when a plurality of single comprehensive pipe gallery bodies are erected, wherein the method comprises the following specific steps:
calibrating the connecting assembly to enable the split structures of the connecting assembly to form a complete whole, and the gap error between the split structures is within a design accommodating range;
after the free erects of every completion utility tunnel, place seal assembly between adjacent utility tunnel monomer to compress seal assembly through shrink coupling assembling after erectting utility tunnel monomer and seal in order to realize sealing, and all seal through the mode of welding and pouring in this seal structure's inside and outside both sides.
6. The assembled underground comprehensive pipe gallery is characterized by comprising a factory-prefabricated comprehensive pipe gallery single body (1), a connecting assembly (2) for connecting the comprehensive pipe gallery single body (1) and a supporting structure (3) for supporting the comprehensive pipe gallery single body (1), wherein the comprehensive pipe gallery single body (1) is arranged on a gallery foundation;
the comprehensive pipe rack single body (1) comprises a pipe rack upper section (101), a pipe rack middle section (102) and a pipe rack lower section (103) which are prefabricated by a factory, wherein the pipe rack upper section (101), the pipe rack middle section (102) and the pipe rack lower section (103) are assembled on site, mounting ribs (104) are arranged on the outer wall of the pipe rack upper section (101), connecting cavities (4) are fixedly arranged at the outer ends of the pipe rack middle section (102), and a mounting column hole (401) for being connected with a supporting sleeve column sleeve is arranged in the center of each connecting cavity (4);
the supporting structure (3) comprises a top arch mechanism (5) which is positioned at the top and is used for permanently supporting the underground passage and a rigid supporting beam (6) which is positioned at the bottom.
7. An assembled underground utility tunnel according to claim 6, characterized in that there are several groups of pipe racks (105) for installing strong electricity in the upper section (101) of the pipe tunnel;
the pipe rack middle section (102) is composed of secondary rack pipes (106) which are respectively arranged on two sides of the upper section of the pipe rack, wherein one secondary rack pipe (106) is internally divided into a weak current chamber (107) and a municipal chamber (108) through a partition plate, the other secondary rack pipe (106) is internally divided into a shielding chamber (109) and a municipal chamber (108) through a partition plate, the two municipal chambers (108) are combined to form a whole, and the combined municipal chamber (108) is positioned above the lower section (103) of the pipe rack;
the pipeline dredging device is characterized in that a lifting frame for arranging a pipeline is arranged in the lower section (103) of the pipeline corridor, an automatic dredging channel (110) is arranged at the bottom of the lifting frame, and a drainage pump is arranged on the automatic dredging channel (110) according to a set distance.
8. The fabricated underground comprehensive pipe gallery according to claim 6, wherein a locking piece (402) in locking connection with the supporting rib is fixedly installed on the periphery of the bottom of the mounting column hole (401) in the connecting cavity (4), and a buffering ring cushion is arranged in the mounting column hole (401).
9. The fabricated underground comprehensive pipe gallery according to claim 8, wherein the top arch mechanism (5) is installed between the two corresponding supporting ribs through hinges, a node beam (7) perpendicular to the top arch mechanism (5) is fixedly installed on the top arch mechanism (5), a plurality of groups of arc-shaped beams (701) which are sequentially overlapped are installed on the node beam (7) along the top arch mechanism (5), the lengths of the arc-shaped beams (701) are sequentially shortened from bottom to top, and an elastic return spring pipe (702) is fixedly installed between the end of each arc-shaped beam (701) and the node beam (7).
10. An assembled underground utility tunnel according to claim 9, characterized in that the rigid supporting beam (6) comprises a U-shaped beam (601) with two ends arranged on the supporting rib, and the two ends of the U-shaped beam (601) are both arranged on the supporting sleeve column, and the joint of the supporting rib and the U-shaped beam (601) is provided with a locking tooth and a locking groove which are correspondingly limited.
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| CN111236304A (en) | 2020-06-05 |
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