CN110985764A - Vibration-damping waterproof wall penetrating pipe structure and construction method thereof - Google Patents
Vibration-damping waterproof wall penetrating pipe structure and construction method thereof Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/022—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with a single corrugation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
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Abstract
The invention provides a vibration-damping waterproof wall penetrating pipe structure and a construction method thereof. The invention adopts the rigid wall-penetrating pipe with the labyrinth water stop plate and the damping corrugated compensator structure to realize the sealing structure with the rigidity and the flexibility functions, the wall-penetrating pipe replaces the existing waterproof wall-penetrating sleeve, the flexible sealing assembly between the wall-penetrating sleeve and the medium pipeline is removed, the leakage channel is reduced, the structure is simplified, the defects of the existing flexible waterproof sleeve and the existing rigid waterproof sleeve, such as separate arrangement, complex structure, inconvenient construction and the like, the leakage resistance equal to that of the wall-penetrating pipe and the wall body is realized, the sealing structure is simplified, and the processing and construction cost is reduced.
Description
Technical Field
The invention belongs to the technical field of water supply and drainage in industrial buildings, civil buildings and municipal buildings, relates to a waterproof sealing technology when a medium pipeline passes through an outer protective structure wall body, and particularly relates to a vibration-damping waterproof wall penetrating pipe structure and a construction method thereof.
Background
At present, in the water supply and drainage professions of industrial buildings, civil buildings and municipal works, when a medium pipeline is buried in a ground water level layer and penetrates through the walls of outer enclosing structures such as buildings and structures, a wall bushing waterproof sealing structure shown in a national standard drawing set 02S404 flexible waterproof bushing B type is usually adopted to achieve a preset waterproof sealing effect, and the wall bushing waterproof sealing structure has limitation in use for site environments accompanied with settlement deformation of the buildings and the structures and working vibration, distortion and the like of the medium pipeline. The most perfect flexible waterproof sealing structure of the wall bushing adopted by the national standard drawing set 02S404 flexible waterproof bushing B is shown in figure 1A, in the existing waterproof sealing structure of the wall bushing, a medium pipeline 1 is sleeved in the wall bushing 02, a leakage channel is arranged between the medium pipeline 1 and the wall bushing 02 to be sealed, the sealing structure 03 in the existing waterproof wall bushing is only provided with only one flexible sealing component 031 (a single side on the back surface) and one rigid sealing component 032 (a side on the front surface) (see the national standard drawing set 02S404 flexible waterproof bushing B, see figure 1A), the rigid sealing component loses the waterproof sealing effect too early along with the irregular deformation, settlement, displacement and distortion of a building, a structure and the medium pipeline and the frequent working vibration of the medium pipeline, and the remaining flexible sealing component can only bear the smaller osmotic pressure of an underground water level layer, meanwhile, under the condition that the rigid supporting point of the water-facing side of the wall bushing 02 of the medium pipeline is out of balance, the flexible sealing assembly on the back water surface loses the sealing function too early, so that the leakage phenomenon (see a leakage channel II LC2 in fig. 1A) is caused, the application occasions of the rigid sealing assembly are limited, the rigid sealing assembly is particularly not suitable for the occasions with large building structure size, under the combination, even if the buildings have tiny settlement and mutual displacement phenomena, the waterproof sealing effect can be lost, and the impact wave acting force in wartime and the requirement on the anti-seismic performance of the building house are more difficult to resist. Usually, settlement joints, expansion joints or positions relatively close to the seating positions of two buildings are avoided as far as possible at the installation positions of medium pipelines penetrating through an outer protective structure wall, when the objective cannot be changed or special requirements exist, design can only be modified by structural engineers, a foundation is enlarged, the relative displacement of the buildings, structures and the medium pipelines is reduced as far as possible, construction after modification is complex and high in cost, once leakage occurs at the later stage, earth on the outer sides of the building and the building enclosure structure needs to be excavated, the outer waterproof layer and the heat insulation layer of the original building structure need to be damaged for repairing and leaking stoppage, and a large amount of manpower and material resources are consumed.
When the existing medium pipeline passes through the wall bushing of the building external enclosure structure, the sealing structure between the wall bushing 02 and the medium pipeline 1 usually adopts different sealing materials and structures and different construction processes inside two sides of the water facing side and the water backing side respectively to ensure the sealing effect between the two. However, as the sealing material between the medium pipeline 1 and the wall bushing 02 is used as a connecting piece, the sealing material is bound to be subjected to mutual interference acting force generated by relative displacement deformation of the medium pipeline 1 and the wall bushing, so that the sealing material between the medium pipeline and the wall bushing generates stress and plastic deformation until the sealing material is broken and fails. Even if a plurality of sealing measures are adopted, due to the inherent characteristics of the flexible sealing material, the effect of the flexible sealing material can not be compared with that of rigid sealing connection performance, and the flexible sealing material combined with the design specification of civil air defense basements is difficult to resist the acting force of shock waves and earthquakes in wartime.
Disclosure of Invention
To address one or more of the above concerns, the present invention provides a vibration-damping waterproof wall feed-through structure.
The technical scheme adopted by the invention is as follows:
a damping waterproof wall penetrating pipe structure is used for sealing a medium pipeline and comprises a wall penetrating pipe which penetrates through a wall body and is embedded in the wall body, two ends of the wall penetrating pipe (2) extend out of the wall body (01), damping corrugated compensators (3) are arranged at two ends of the wall penetrating pipe (2), and the damping corrugated compensators (3) are respectively communicated with the medium pipeline (1) on the water facing side and the water backing side in a sealing mode; the shock absorption corrugated compensator (3) is a standard shock absorption expansion joint.
In the damping waterproof wall penetrating pipe structure, at least three wing ring water stopping plates (22) are arranged on the periphery of a pipe body (21) of the wall penetrating pipe (2), and all the wing ring water stopping plates (22) are embedded in a wall body (01).
In the vibration-damping waterproof wall penetrating pipe structure, the length L2 of the end part of the back water surface of the wall penetrating pipe (2) extending out of the wall body (01) is 300-500 mm, and the length L1 of the end part of the upstream water surface of the wall penetrating pipe (2) extending out of the wall body (01) is 1500-2000 mm.
In the waterproof wall tube structure of above-mentioned damping, be equipped with on wall body (01) and be used for reservation through-wall hole (011) of pre-buried through-wall pipe (2), lay in the wall body all around of reserving through-wall hole (011) and distribute strengthening rib (013) that muscle (012) are the angle with the conventionality.
In the vibration-damping waterproof wall-penetrating pipe structure, the included angle between the conventional distribution ribs (012) and the reinforcing ribs (013) is 45 degrees.
In the vibration-damping waterproof wall-penetrating pipe structure, the medium pipeline (1), the vibration-damping corrugated compensator (3) and the wall-penetrating pipe (2) are in rigid sealing connection.
In the vibration-damping waterproof wall-penetrating pipe structure, the medium pipeline (1), the vibration-damping corrugated compensator (3) and the wall-penetrating pipe (2) are in rigid sealing connection through the flange sheets and the bolt sets (4).
In the vibration-damping waterproof wall-penetrating pipe structure, sealing gaskets are respectively arranged among the flange sheets connected with the medium pipeline (1), the vibration-damping corrugated compensator (3) and the wall-penetrating pipe (2).
In the vibration-damping waterproof wall-penetrating pipe structure, the main body of the standard vibration-damping expansion joint is a corrugated pipe, end pipes are respectively fixed at two ends of the corrugated pipe, and standard flange plates are respectively installed on the end pipes at the two ends.
Furthermore, a support is axially arranged on the periphery of the corrugated pipe, and two ends of the support are respectively fixed on the standard flange.
The invention also provides a construction method of the damping waterproof wall penetrating pipe structure, which comprises the following steps:
the method comprises the following steps that firstly, a through-wall pipe (2) is pre-buried at a preset position of a wall body (01), so that a wing ring water stop plate (22) of the through-wall pipe (2) is completely buried in the wall body (01);
step two, mounting through-wall pipe connecting flange pieces (23) at two ends of the through-wall pipe (2) respectively, and then connecting the through-wall pipe connecting flange pieces (23) with a compensator connecting flange piece (32) arranged at one end of the damping corrugated compensator (3) in a sealing manner;
and thirdly, installing a medium pipe connecting flange piece (11) at the end part of the medium pipeline (1), wherein the medium pipe connecting flange piece (11) is in sealing connection with a compensator connecting flange piece (32) arranged at the other end of the damping corrugated compensator (3).
In the construction method of the vibration-damping waterproof wall penetrating pipe structure, in the first step, the following steps are also included before the wall penetrating pipe (2) is embedded:
the wall body (01) is provided with a reserved through-wall hole (011) at the position of the pre-buried through-wall pipe (2), and reinforcing ribs (013) which are at an angle with conventional distribution ribs (012) are arranged in the wall body around the reserved through-wall hole (011).
By adopting the technical scheme, the invention has the following characteristics and beneficial effects:
1) the invention adopts the combination of the corrugated shock-absorbing compensator and the rigid wall-penetrating pipe to realize the sealing structure with the rigidity and the flexibility at the same time, the wall-penetrating pipe replaces the existing waterproof wall-penetrating sleeve, the flexible sealing assembly between the wall-penetrating sleeve and the medium pipeline is removed, the leakage channel is reduced, the structure is simplified, and the defects of the existing flexible waterproof sleeve and the existing rigid waterproof sleeve which are separately arranged, complicated structure, inconvenient construction and the like are overcome; the damping corrugated compensator is additionally arranged at the stress concentration points at the two ends of the wall penetrating pipe to be connected with the medium pipeline, the inherent deformable, damping and isolatable effects of the damping corrugated compensator are utilized, the stress-free connection effect of the medium pipeline is realized, the technical problem of interaction stress fatigue fracture generated by the simultaneous action of double independent foundations on the same sealing component is solved, the anti-leakage performance equal to that of the wall penetrating pipe and a wall body is realized, the sealing structure is simplified, and the processing and construction cost is reduced.
2) At least three wing ring water stop plates are arranged on the periphery of the pipe body of the wall penetrating pipe, the plurality of wing ring water stop plates are embedded into the wall body to form a labyrinth seal structure in the mechanical seal theory, even if a gap exists between the wing ring water stop plates and the wall body, the seepage water is in the 90-degree climbing process of each wing ring water stop plate, the seepage pressure is rapidly reduced, the water blocking and water stopping effects are achieved, the seepage water cannot permeate into the inside of a building, the anti-seepage performance equal to that of the wall penetrating pipe structure and the wall body is achieved, the seal structure is simplified, and the processing and construction cost is reduced.
3) The vibration-damping waterproof wall-penetrating pipe only needs to be pre-embedded in the wall construction stage, extra sealing treatment is not needed, and the vibration-damping corrugated compensator is additionally arranged at the position bearing stress, so that even if the vibration-damping corrugated compensator is damaged, the vibration-damping corrugated compensator can be maintained or replaced under the condition of not influencing the waterproof layer, the heat-insulating layer and the ground water dispersing of the outer enclosure of the building structure, the construction process and the construction period are simplified, and the maintenance and operation cost is reduced.
4) The damping corrugated compensator used in the invention uses the existing standard parts, can realize the batch production and processing in standardization and marketization, and has the advantages of adsorption stress, adsorption vibration energy, fatigue resistance and bending property which are better than the performance of the flexible waterproof sleeve of the existing national standard map set.
The vibration-damping waterproof wall-penetrating pipe structure is simple in structure and convenient to construct, simultaneously meets the requirements that a waterproof layer and a heat-insulating layer of an outer enclosure wall body of a building are not damaged in maintenance and replacement, is suitable for application occasions that medium pipelines with large permeation pressure in an underground water level layer penetrate through the building and the outer enclosure wall of the building, can meet the acting force of shock waves in wartime and the requirement of anti-seismic performance, and can not be damaged or lose the sealing effect even if the building collapses.
Drawings
FIG. 1A is a schematic diagram of the overall structure of a prior art waterproof sealing structure of a wall bushing and its leakage path;
FIG. 1B is a schematic view of a conventional wall bushing and wall mounting structure;
FIG. 2A is a schematic structural view of a vibration-damping waterproof wall-penetrating tube structure of the present invention;
FIG. 2B is a schematic view of the position of the wall penetrating pipe and the wall;
fig. 2C is a schematic view of reinforcement of the wall structure around the through-wall pipe.
The reference numbers in the figures denote:
01-wall body, 011-reserved through-wall holes, 012-conventional distribution ribs and 013-reinforcing ribs;
02-wall bushing, 021-bushing pipe body, 022-middle wing ring plate, 023-end wing ring plate and 024-inner retainer ring;
03-seal configuration, 031-flexible seal assembly, 032-rigid seal assembly;
LC 1-leakage channel one, LC 2-leakage channel two;
h1-the distance from the upstream surface to the external shock absorption corrugated compensator, H2-the distance from the downstream surface to the internal shock absorption corrugated compensator, and H3-the thickness of the wall body;
1-medium pipeline, 11-medium pipeline connecting flange sheet;
2-wall penetrating pipe, 21-pipe body, 22-wing ring water stop plate and 23-wall penetrating pipe connecting flange plate;
3-a damping corrugated compensator, 31-a compensator body and 32-a compensator connecting flange sheet;
4-bolt group.
Detailed Description
In order to overcome the defects that the stress of a medium pipeline is unbalanced, the connection strength between a wall bushing and a wall body is not enough, parts are complex to process, the sealing performance is poor, the construction difficulty is high, the maintenance cost is high, the application to building occasions with higher underground water level and higher osmotic pressure is difficult, and the like in the conventional wall bushing waterproof sealing structure, the invention provides a vibration-damping waterproof wall bushing structure and a construction method thereof, wherein the structure adopts a rigid wall bushing structure with a labyrinth water stop plate and a vibration-damping corrugated compensator structure to replace the conventional waterproof wall bushing, and removes a flexible sealing assembly between the wall bushing and the medium pipeline, so that the sealing structure with rigidity and flexibility functions is realized, and the labyrinth water stop plate structure is formed by embedding at least three wing ring water stop plates in the wall body, so that the sealing effect is enhanced; the damping corrugated compensators are arranged at the two ends of the through-wall pipe to connect the medium pipeline and the through-wall pipe, and the corrugated compensators release stress generated between the through-wall pipe and the medium pipeline to absorb working vibration energy of the medium pipeline; this structure reduces and leaks the link, when realizing waterproof sealing effect, has reduced the processing degree of difficulty and the assembly degree of difficulty, reduces processing and cost of maintenance, has increased the structural strength of wall pipe part and waterproof sealing structure's life, realizes no stress linkage effect between medium pipeline and the wall pipe, is applicable to the application occasion that is located the ground water level in situ, osmotic pressure is big.
This waterproof wall bushing structure is including burying the wall bushing in the wall body in advance and installing the shock attenuation corrugated compensator at wall bushing both ends, and the medium pipeline of the water-facing side and the back water face side is installed respectively to the shock attenuation corrugated compensator at both ends on for the wall bushing and the shock attenuation corrugated compensator at both ends become the partly of medium pipeline, have the performance of flexible waterproof sleeve structure on the whole, wherein:
the outer wall of wall pipe is equipped with at least three wing ring stagnant water board, and the wing ring stagnant water board all imbeds the seal structure of mechanical labyrinth in the wall body, strengthens the sealed effect and the joint strength of wall pipe and wall body. This structure is direct sets up the wing ring sealing plate in the periphery of wall pipe (as the partly of medium pipeline), only needs to wear the wall pipe pre-buried in the wall body, has saved the flexible seal structure's between current wall pipe and the medium pipeline preparation processing and the construction link, simplifies the structure, reduces leakage path, gains structural strength and the anti leakage performance that wall pipe and wall body are equal, need not carry out the structure reinforcement between the extra gap.
The damping corrugated compensator is additionally arranged at two ends of the wall penetrating pipe, the compensator sections are made of rigid materials and have flexible deformation functions, and as a stress release link, the damping corrugated compensator can release settlement deformation and distortion deformation acting on the wall penetrating pipe, medium pipeline working vibration, pressure vibration and pendulum, water hammer effect and various deformation stresses to a damping corrugated compensator device, and the influence of the stresses between the medium pipeline and the wall penetrating pipe on a sealing assembly is relieved under the condition of realizing complex deformation.
The vibration-damping waterproof wall-penetrating pipe structure and the construction method thereof according to the present invention will be described in detail with reference to the following embodiments and accompanying drawings.
In the embodiment shown in fig. 2A, the vibration-damping waterproof wall penetrating pipe structure includes a wall penetrating pipe 2 and damping corrugated compensators 3 installed at two ends of the wall penetrating pipe 2, the wall penetrating pipe 2 is embedded in the wall 01, and two ends of the wall penetrating pipe extend out of the wall 01, the medium pipelines 1 on the water-facing side and the water-backing side are respectively installed on the damping corrugated compensators 3 at the end portions of the wall penetrating pipe 2, wherein:
the existing wall bushing structure is shown in fig. 1A and 1B, two inner check rings 024 are welded inside a bushing body 021 of a bushing 02 of the wall bushing, the processing and manufacturing process of the component structure is complex, when the pipe diameter specification of the wall bushing 02 is small, the inner side of each inner check ring 024 cannot be welded, the inner diameter of each inner check ring 024 and the installation gap f1 of the medium pipeline 1 cause great construction and assembly difficulty; the outer wall of the existing wall bushing is welded with a middle wing ring plate 022 and two end wing ring plates 023, the middle wing ring plate 022 is embedded in a wall body 01, and a gap is formed between the end wing ring plates 023 and the wall body 01, because the wall bushing 02 and the wall body 01 (concrete) belong to different types of building materials, the difference of thermal expansion coefficients is large, a leakage gap is generated between the wall bushing 02 and the wall body 01 (see a leakage channel LC1 in FIG. 1A), and the middle wing ring plate 022 wrapped by the wall body cannot ensure the waterproof sealing effect when the underground water level is high and the permeation pressure is large; thus, as shown in fig. 1A, the conventional wall bushing structure forms two leakage paths, i.e., a leakage gap between the wing ring plate and the wall 01 (leakage path one LC1), and a leakage gap between the medium pipe 1 and the wall bushing 02 (leakage path two LC 2). In order to prevent the leakage phenomenon generated by the gap between the wing ring plates contacting the wall 01, referring to fig. 2B, at least three wing ring water-stop plates 22 are directly arranged on the outer wall of the wall-penetrating pipe 2 (the wing ring water-stop plates 22 are the same as the wing ring plates (middle wing ring plate 022 and two end wing ring plates 023) of the wall-penetrating sleeve 02 in the prior art), all the wing ring water-stop plates 22 are embedded in the wall 01, a plurality of wing ring water-stop plates 22 form a mechanical labyrinth type sealing structure, even if there is a gap between the wing ring water-stop plates 22 and the wall 01, the leakage channel LC1 in fig. 2B is used for the liquid flow direction, the leakage water is required to penetrate to the back water surface side (in a general building room), the leakage water is required to sequentially cross each wing ring water-stop plate 22, the leakage water is required to pass through a 90 ° climbing process every time when passing through one wing ring water-stop plate 22, and the process rapidly reduces the, Under the action of water stopping, the labyrinth structure formed by the plurality of wing ring water stopping plates 22 consumes the osmotic pressure of the leaking water in sequence, so that the leaking water cannot penetrate through the last defense line and further penetrates into the interior of the building. This wall pipe 2 no longer sets up the wall bushing 02 who is independent of medium pipeline 1 as medium pipeline 1's partly, reduces the leakage link as medium pipeline 1's, and by the mechanical labyrinth seal structure that wing ring stagnant water board 22 formed, has guaranteed sealed effect for this spare part processing is simple, has reduced the installation degree of difficulty simultaneously by a wide margin.
The construction of the existing pre-buried through-wall casing 2 is usually carried out by breaking off the steel bars at the wall body position of the pre-buried through-wall casing 2 to form a reserved through-wall hole 011, which can cause the local strength reduction of the reserved through-wall hole 011 of the wall body 01 and even cause the anti-seismic parameters of the wall body 01 to be out of the requirements, therefore, the invention adopts a structural reinforcement measure according to the position of the reserved through-wall hole 011, the size of the specification of the through-wall pipe 2, the damage degree of the wall body 01 and other factors to ensure that the reserved through-wall hole 011 can not reduce the strength performance of the original wall body, referring to fig. 2C, the concrete reinforcement structure is that the number of broken bars is reduced as much as possible on the basis of the vertical and horizontal conventional distribution bars 012 of the wall body 01, reinforcing bars 013 forming angles with the conventional distribution bars are arranged in the wall body around the reserved through-wall hole 011, preferably, the included angles between, the local strength of the wall 01 is compensated by this structure.
Referring to fig. 2A, wall pipe connecting flange pieces 23 (located on the water-facing side and the water-backing side respectively) are respectively arranged at two ends of the wall pipe 2 extending out of the wall body 01, compensator connecting flange pieces 32 are respectively arranged at two ends of a compensator body 31 of the damping corrugated compensator 3, medium pipe connecting flange pieces 11 are respectively arranged at two ends of the medium pipeline 1, and the medium pipeline 1 is communicated with the wall pipe 2 in a rigid sealing manner through the damping corrugated compensator 3, that is, the compensator connecting flange pieces 32 at two ends of the damping corrugated compensator 3 are respectively connected with the wall pipe connecting flange pieces 23 at one end of the wall pipe 2 and the medium pipe connecting flange pieces 11 of the medium pipeline 1 in a rigid sealing manner. Preferably, the medium pipe connecting flange piece 11, the through-wall pipe connecting flange piece 23 and the compensator connecting flange piece 32 are standard flange plates, the damping corrugated compensator 3 is a standardized damping expansion joint, the flange plates are fixedly connected in the circumferential direction through the bolt groups 4, a rigid contact bolt fastening mode is adopted, and the bolts are guaranteed to be in a self-locking state for a long time and are not easy to loosen. Preferably, an elastic sealing ring is arranged between the flanges which are closely attached to each other. In one embodiment, the elastic sealing ring can be embedded in a sealing groove formed in the end face of the flange.
The damping corrugated compensator 3 belongs to a compensation element, and in one embodiment, the damping corrugated compensator 3 is a standard damping expansion joint, the main body of the damping corrugated compensator is a corrugated pipe (an elastic element made of rigid material), end pipes are respectively fixed at two ends of the corrugated pipe, and standard flange plates (namely, compensator connecting flange plates 32) are respectively arranged on the end pipes at the two ends; furthermore, a support is axially arranged on the periphery of the corrugated pipe, and two ends of the support are respectively fixed on the standard flange. The standard shock absorption expansion joint utilizes the effective expansion deformation of the working main body corrugated pipe to absorb the expansion with heat and contraction with cold of a medium pipeline, the working vibration and pressure vibration of the pipeline and the water hammer effect to generate stress deformation and the settlement and expansion of a building structure and the axial, radial and angular displacement generated by shock waves in earthquake and wartime, and also has the function of noise reduction. Therefore, the damping corrugated compensator 3 absorbs the stress in all directions generated by the medium pipeline 1 by utilizing the elastic characteristic of the corrugated pipe, can isolate the absorption of axial, radial and angular displacement and vibration energy due to the sedimentation, the expansion and contraction deformation generated by the building and the stress, the deformation and the size change generated by the expansion and contraction of the medium pipeline, and can reduce the deformation influence of the medium pipeline 1 caused by the shock wave in earthquake and wartime.
When the wall penetrating pipe 2 is manufactured, all the wing ring water stop plates 22 are fully welded with the outer wall of the pipe body 21. The wall pipe 2 cooperates the structure reinforcement work when the wall body 01 is pre-buried, and the process of concrete pre-buried wall pipe 2 is as follows: firstly, welding and reinforcing a wing ring water stop plate 22 of a through-wall pipe 2 and conventional distributed ribs 012 of a wall body 01, then laying reinforcing ribs 013, laying the through-wall pipe 2 with two ends welded with through-wall pipe flange sheets 23, and then performing support of a pouring template; secondly, pouring a wall body 01; and after the curing period is finished after the pouring is finished, the template is dismantled. The length of the wall penetrating pipe 2 is larger than the thickness of the wall body 01, and after pouring is completed, all the wing ring water stop plates 22 are embedded in the wall body 02. After all pipelines are installed and subjected to a hydraulic pressure strength test, after a sealing test is completed, the outdoor medium pipeline is buried, buttresses are reasonably designed at the lower end of the medium pipeline to reduce the relative displacement of the medium pipeline during the burying, the periphery of a building expansion joint connected with the medium pipeline is covered by sand and soil more than 300mm, the upper end of the building expansion joint is covered by a cement plate, sufficient stress release and deformation space are provided for the shock absorption expansion joint, a maintenance well is required to be arranged under the condition, and the shock absorption corrugated compensator 3 and an outdoor valve well are preferably arranged in the same well together, so that the future maintenance work is facilitated.
Preferably, the length H2 of the end part of the through-wall pipe 2 on the back surface (positioned indoors) extending out of the wall body 01 is 300mm-500mm, and is used for reserving an operation space in connection with the damping corrugated compensator 3; the length H1 of the end part of the wall penetrating pipe 2 on the upstream side extending out of the wall body 01 is 1500mm-2000mm, which aims to avoid the water spreading width of the waterproof layer, the heat insulation layer and the ground layer of the building, so as to ensure that the external structural surface of the building is not damaged in the future maintenance work and simultaneously not influence other building construction related to the wall body. Note that the length H1 of the wall penetrating pipe 2 extending out of the wall 01 on the water-facing side should not be too large, otherwise, the settlement and displacement of the building will be reflected on the damping corrugated compensator 3, resulting in too large comprehensive deformation of the damping corrugated compensator 3.
For the engineering application of the damping and waterproof wall penetrating pipe structure, a cement plant in east asia zone is taken as an example for explanation.
The cement plant is in an east Asia zone, the geological condition is complex, the underground water level is high, the osmotic pressure is high, and the ground gushing phenomenon is often accompanied, and in the existing industrial circulating water system, the diameter DN of the medium pipeline 1 is 150 mm. The pipeline ditch at the position of 1 m underground penetrates through a structural enclosure wall outside a kiln head workshop close to the crushing workshop in advance, a plurality of grate cooler devices in the kiln head workshop are connected, the thickness of a wall body 01 is 500mm, and the outer wall is of a reinforced concrete structure.
The medium pipeline of the cement plant has the following characteristics: the temperature change is obvious, and the pipeline has large radial and longitudinal distortion; the medium in the pipeline belongs to a forced circulation system and is accompanied by the phenomena of working vibration, pressure oscillation and water hammer knocking generated by a circulating pump. The medium pipeline 1 in the pipeline ditch is to penetrate through a peripheral retaining wall body of a heavy industrial factory building and is close to an ore crushing workshop, the surrounding environment is severe, the geological condition is complex, and the phenomena of serious settlement and vibration deformation of a building are accompanied, according to the construction teaching of a first-stage project using a national standard drawing set 02S404 flexible waterproof sleeve (B type), the damping waterproof wall-penetrating sleeve structure and the construction method are decided to be adopted, and practice proves that the structure has a remarkable waterproof sealing effect and can meet the severe working environment of the heavy industrial factory building and high osmotic pressure. (see FIG. 2A).
According to the national standard map set 02S404, the galvanized DN150 steel pipe has the outer diameter of 159mm, the wall penetrating pipe 2 is used as a part of the medium pipeline 1, the material and the specification of the wall penetrating pipe are the same as those of the medium pipeline, the outer diameter of the wall penetrating pipe is 159mm, and the wall thickness of the wall penetrating pipe is 4.5 mm.
According to the parameters, the following are obtained by calculation:
because the field use quantity is less, the periphery of the construction field does not have external processing capacity, the method of field manufacture is adopted, the wall penetrating pipe 2 adopts a galvanized steel pipe with the same material and specification as the medium pipeline 1, the wing ring water stop plate 22 adopts a standard DN150 flange sheet and is welded with the pipe body 21 of the wall penetrating pipe 2, the welding technical requirement is that a national standard drawing set 02S404 is executed, and the length H of the wall penetrating pipe 2 is as follows:
h is the length H2+ the thickness H3+ the length H1
＝500+500+1500＝2500(mm)
The damping corrugated compensator 3 adopts an outsourcing mode, a damping expansion joint with the model of 1.6ZMS150 multiplied by 6 is selected, and the performance parameters are as follows:
the working pressure is 1.6MPa, the nominal diameter DN150, the number of the corrugated pipes is provided with six waves (the six waves refer to that six circles of thread bodies are arranged in the effective specified length range of the shock absorption expansion joint, and are equivalent to six circles of springs), and the connection mode adopts flange sheet thread connection.
The construction method of the damping waterproof wall penetrating pipe comprises the following steps:
step one, pre-burying the through-wall pipe 2 at a preset position of the wall body 01, so that the wing ring water stop plate 22 of the through-wall pipe 2 is completely buried in the wall body 01.
The method specifically comprises the following steps:
1) a reserved through-wall hole 011 is arranged at the position where the wall-through pipe 2 is embedded in the wall body 01, and reinforcing ribs 013 (preferably 45 degrees) are distributed around the reserved through-wall hole 011 at an angle with the conventional distribution ribs 012 on the basis of the vertical and horizontal conventional distribution ribs 012 of the wall body 01;
2) binding or welding and fixing the through-wall pipe 2 provided with the through-wall pipe connecting flange sheet 23 and the wing ring water stop plate 22 with structural steel bars (conventional distribution ribs 012) of the wall body 01;
3) and (4) carrying out template support and wall body pouring, and embedding the wing ring water stop plate 22 of the through-wall pipe 2 into the wall body 01.
Step two, mounting through-wall pipe connecting flange pieces 23 at two ends of the through-wall pipe 2 respectively, and then hermetically connecting the through-wall pipe connecting flange pieces 23 with a compensator connecting flange piece 32 arranged at one end of the damping corrugated compensator 3;
and step three, mounting a medium pipe connecting flange piece 11 on the end part of the medium pipeline 1, and hermetically connecting the medium pipe connecting flange piece 11 with a compensator connecting flange piece 32 arranged at the other end of the damping corrugated compensator 3.
The method specifically comprises the following steps:
1) a compensator connecting flange sheet 32 (standard flange) arranged on the end face of a compensator body 31 of the damping corrugated compensator 3 on the back water surface side is hermetically connected with a wall pipe connecting flange sheet 23 on the back water surface side through a bolt group 4, so that the compensator connecting flange sheet 32 and the wall pipe connecting flange sheet 23 are coaxial; specifically, during connection, a sealing ring is additionally arranged between the compensator connecting flange piece 32 and the through-wall pipe connecting flange piece 23 (the type of the sealing ring is selected according to the type of a medium pipeline), and bolts of the bolt group 4 penetrate into bolt holes corresponding to the compensator connecting flange piece 32 and the through-wall pipe connecting flange piece 23 respectively and are locked and hermetically connected by nuts.
2) Placing the medium pipeline 1 on the back water surface side on the ground of a position to be installed, and installing a medium pipe connecting flange sheet 11 (matched with a standard flange plate of a damping corrugated compensator) at one end of the medium pipeline 1;
3) the medium pipe connecting flange piece 11 and the compensator connecting flange piece 32 on the back water surface side are hermetically connected through the bolt group 4, so that the medium pipe connecting flange piece 11 and the compensator connecting flange piece 32 on the back water surface side are coaxial; specifically, during connection, a gasket (the type of the gasket should be selected according to the type of the medium pipe) is additionally arranged between the medium pipe connecting flange piece 11 on the back surface side and the compensator connecting flange piece 32, and bolts of the bolt group 4 respectively penetrate into bolt holes corresponding to the medium pipe connecting flange piece 11 on the back surface side and the compensator connecting flange piece 32, and are locked and hermetically connected by nuts.
4) After the installation of the back water surface side is finished, the water pressure strength test is carried out on the water facing surface side of the wall penetrating pipe 2 by using a blind plate for plugging, the test pressure is strictly forbidden to exceed 1.5 times of nominal pressure, and in the test process, two ends of the damping corrugated compensator 3 are fixed to prevent the compensator from being stretched by internal pressure.
5) The medium pipeline 1 on the water-facing side is installed by adopting the same method, and the difference is that the damping corrugated compensator 3 on the water-facing side is provided with a special equipment well or a valve well; when the medium pipeline 1 on the water facing side (usually outdoor) is buried, a buttress is reasonably designed at the lower end of the medium pipeline 1 to reduce the relative displacement of the medium pipeline 1, the periphery of the damping corrugated compensator 3 connected with the medium pipeline 1 is covered by sand and soil for more than 300mm, and the upper end of the damping corrugated compensator is covered by a cement plate.
The connection mode of the damping corrugated compensator 3 can use two modes of flange connection and welding, and when the damping corrugated compensator is arranged on a back water surface or an upstream surface trench or in a well, the flange mode is used, and when the damping corrugated compensator is laid by a directly buried pipeline, the welding mode is used.
The damping waterproof wall penetrating pipe structure and the construction method have the following characteristics and technical effects:
1) the invention adopts the design ideas of multi-disciplinary mutual reference and redundancy technology, combines the water stop plate technology of architecture with the labyrinth seal structure of mechanics, at least three wing ring water stop plates 22 are arranged at intervals on the periphery of the pipe body 21 of the wall-penetrating pipe 2, and the plurality of wing ring water stop plates are embedded into the wall body 01 to form the labyrinth seal structure in the theory of mechanical seal, even if a gap is reserved between the wing ring water stop plates 22 and the wall body 01, the seepage water rapidly reduces the seepage pressure in the 90-degree climbing process of each wing ring water stop plate, plays the role of water blocking and water stopping, the seepage water cannot penetrate into the building, realizes the anti-seepage performance of the wall-penetrating pipe structure and the wall body, simplifies the seal structure, and reduces the processing and construction cost.
2) The invention adopts the design idea of a brain storm method, and is characterized in that the existing wall-through sleeve pre-buried in a wall body 01 and a flexible sealing assembly positioned between a medium pipeline 1 and the wall-through sleeve are changed into a wall-through pipe structure (rigid structure) penetrating through the wall body 01, and a damping corrugated compensator 3 is arranged at the end part of a wall-through pipe 2 extending out of the wall body 01 to realize the damping and anti-distortion effects of the existing flexible sealing assembly, so that the strength performance of the wall-through part of the existing wall-through sleeve flexible waterproof sealing structure is improved, and the wall-through pipe does not lose the sealing function even under the condition that the wall body collapses.
3) The invention adopts the design idea of 'cracking rules' of the mechanical die processing technology, the wall body 01 of the building is acted on the wall-through sleeve and the maximum stress deformation position generated by the interaction force of the working vibration, the pressure vibration and the water hammer effect of the medium pipeline 1 from the outside of the building is decomposed, the stress deformation release link is added, namely, the stress concentration points at the two ends of the wall-through pipe 2 are connected with the medium pipeline 1 by additionally arranging the damping corrugated compensator 3, the inherent deformable, vibration-damping and isolatable actions of the damping corrugated compensator 3 are utilized to realize the stress-free connection effect of the medium pipeline 1, and the technical problem of the fatigue fracture of the interaction stress generated by simultaneously acting on the sealing component on the independent foundation is solved.
4) The invention adopts the design idea of the law of Okahm razor, replaces the flexible waterproof sealing structure formed by the existing wall bushing, the medium pipeline 1 and the flexible sealing component between the two by a rigid wall bushing structure with a labyrinth water stop plate and a damping corrugated compensator structure, eliminates the leakage channel II which is difficult to control in the existing double leakage channels, realizes the simplification of the traditional design method, and changes the traditional design method of the fixed format structure into a new breakthrough designed according to the actual function.
5) The damping corrugated compensator can utilize the expansion joint of the existing standard part to realize standardized and marketized mass production and processing, and has the advantages of better performance of absorbing stress, vibration energy and fatigue resistance and better bending performance than the expansion joint of the existing standard part.
6) The damping waterproof wall penetrating pipe only needs to reserve pre-buried work during the construction of a building structure wall body, no additional sealing treatment process is needed, and the part bearing stress is arranged on the damping corrugated compensator, so that the damping waterproof wall penetrating pipe is convenient to maintain or replace even if damaged due to the fact that the part bearing stress is arranged on the waterproof layer, the heat insulation layer and the ground water dispersing outer side of the wall body, the construction process and the construction period are simplified, and the maintenance and operation cost is reduced.
It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention, and that various equivalent modifications and changes may be made thereto without departing from the scope of the present invention.
Claims (10)
1. A damping waterproof wall penetrating pipe structure is used for sealing a medium pipeline and comprises a wall penetrating pipe which penetrates through a wall body and is embedded in the wall body, and is characterized in that two ends of the wall penetrating pipe (2) extend out of the wall body (01), damping corrugated compensators (3) are arranged at two ends of the wall penetrating pipe (2), and the damping corrugated compensators (3) are respectively communicated with the medium pipeline (1) on the water facing side and the water backing side in a sealing manner; the shock absorption corrugated compensator (3) is a standard shock absorption expansion joint.
2. The vibration-damping waterproof wall penetrating pipe structure according to claim 1, characterized in that at least three wing ring water stopping plates (22) are arranged on the periphery of the pipe body (21) of the wall penetrating pipe (2), and all the wing ring water stopping plates (22) are embedded in the wall body (01).
3. The vibration-damping waterproof wall penetrating pipe structure as claimed in claim 2, wherein the length L2 of the water-back end of the wall penetrating pipe (2) extending out of the wall body (01) is 300mm-500mm, and the length L1 of the water-facing end of the wall penetrating pipe (2) extending out of the wall body (01) is 1500mm-2000 mm.
4. The vibration-damping waterproof wall penetrating pipe structure as claimed in claim 2 or 3, wherein a reserved wall penetrating hole (011) for pre-embedding the wall penetrating pipe (2) is formed in the wall body (01), and reinforcing ribs (013) forming angles with the conventional distribution ribs (012) are distributed in the wall body around the reserved wall penetrating hole (011); preferably, the included angle between the regular distribution ribs (012) and the reinforcing ribs (013) is 45 degrees.
5. The vibration damping and waterproof wall penetrating pipe structure according to any one of claims 1 to 4, characterized in that rigid sealing connection is adopted among the medium pipeline (1), the vibration damping corrugated compensator (3) and the wall penetrating pipe (2).
6. A shock absorbing and waterproof wall penetrating pipe structure according to claim 5, characterized in that said rigid sealing connection is a flange plate, bolt set (4) connection.
7. The vibration-damping and waterproof wall-penetrating pipe structure according to claim 6, wherein a sealing gasket is arranged between the connected flange sheets.
8. The vibration-damping waterproof wall-penetrating pipe structure as claimed in any one of claims 1 to 7, wherein the main body of the standard vibration-damping expansion joint is a corrugated pipe, end pipes are respectively fixed at two ends of the corrugated pipe, and standard flanges are respectively mounted on the end pipes at the two ends of the corrugated pipe; preferably, the periphery of the corrugated pipe is axially provided with a support, and two ends of the support are respectively fixed on the standard flange.
9. A method of constructing a vibration damping and waterproof wall penetrating pipe structure according to any one of claims 2 to 8, comprising the steps of:
the method comprises the following steps that firstly, a through-wall pipe (2) is pre-buried at a preset position of a wall body (01), so that a wing ring water stop plate (22) of the through-wall pipe (2) is completely buried in the wall body (01);
step two, mounting through-wall pipe connecting flange pieces (23) at two ends of the through-wall pipe (2) respectively, and then connecting the through-wall pipe connecting flange pieces (23) with a compensator connecting flange piece (32) arranged at one end of the damping corrugated compensator (3) in a sealing manner;
and thirdly, installing a medium pipe connecting flange piece (11) at the end part of the medium pipeline (1), wherein the medium pipe connecting flange piece (11) is in sealing connection with a compensator connecting flange piece (32) arranged at the other end of the damping corrugated compensator (3).
10. The construction method of the vibration-damping waterproof wall penetrating pipe structure as claimed in claim 9, wherein in the first step, before embedding the wall penetrating pipe (2), the following steps are further included:
the wall body (01) is provided with a reserved through-wall hole (011) at the position of the pre-buried through-wall pipe (2), and reinforcing ribs (013) which are at an angle with conventional distribution ribs (012) are arranged in the wall body around the reserved through-wall hole (011).
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| CN112554591A (en) * | 2020-11-16 | 2021-03-26 | 浙江至方建设有限公司 | Construction method for anti-seepage inner and outer walls |
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