Complex city area environment space limited side connection and communication different elevation pipelines and construction method

Abstract

The invention relates to a complex city environment space limited side connection and communication different-elevation pipeline construction system and a construction method thereof, the complex city environment space limited side connection and communication different-elevation pipeline construction system comprises a sleeve reinforcing ring, a lifting platform and a steel shell pressing device, and the steel shell pressing device comprises a steel pipe uplift pile and a protection top cover. The steel shell pressing device has the beneficial effects that the steel shell pressing device is researched and developed, the protection top cover is provided with the lower edge ring and the insertion rod, the bottom of the protection top cover is embedded into the steel shell, the contact area of the protection top cover and the steel shell is increased, and damage to the steel shell in the sinking process is avoided; a steel shell pressing sinking technology is researched and developed, a hydraulic winch is matched with a steel pipe uplift pile, the hydraulic winch is arranged on the top of the uplift pile and connected with a cross beam on a protection top cover through a steel wire, the sinking speed of the steel shell is controlled by controlling the speed of the hydraulic winch, and the sinking construction quality of the steel shell is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of side connection construction of pipelines at different elevations, and in particular relates to a side connection connecting pipelines at different elevations in a complex urban environment with limited space and a construction method. Background Art

[0002] Today’s cities are developing rapidly, and infrastructure construction faces many challenges and opportunities. As a key component, the urban pipeline system is like a sophisticated “blood network” that undertakes the task of transporting water, gas, energy and other resources to ensure the orderly operation of the city.

[0003] However, in a complex urban environment, pipeline construction is difficult, with limited space and prominent problems with side connections of pipelines at different elevations. On the one hand, accelerated urbanization, high-intensity land development, high-rise buildings and complex underground pipelines have led to extremely compressed space for new pipelines. Engineers must be like fine craftsmen, relying on high-precision measurement and positioning technology to avoid existing building foundations and pipelines, while taking into account installation and maintenance needs. This is a bottleneck that needs to be broken through urgently.

[0004] In view of this, in response to a series of problems arising during the construction of side connections of pipelines at different elevations, it is urgent to invent a simple and effective construction system for side connections of pipelines at different elevations in a complex urban environment with limited space, so as to improve the construction quality of side connections of pipelines at different elevations, reduce construction safety risks, and speed up construction progress. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a side-connected pipeline with different elevations and a construction method in a complex urban environment with limited space.

[0006] This complex urban environment has limited space and connects the pipeline construction system at different elevations, including casing reinforcement ring, lifting platform and steel shell pressing device, which includes steel pipe pull-out piles and protective top cover; A caisson is set outside the built pipeline, a side pipe is set between the caisson and the built pipeline, steel pipe anti-pullout piles are set around the caisson, a hydraulic winch is set on the top of the anti-pullout piles, the bottom of the protective top cover is embedded in the steel shell, a crossbeam is passed through the protective top cover, and the hydraulic winch is connected to the crossbeam through a steel wire; An internal support system is arranged in the built pipeline, a casing reinforcement ring is arranged in the side pipe, and the lifting platform is arranged on the side of the casing reinforcement ring facing the built pipeline; a steel template is arranged in the side pipe.

[0007] Preferably, a pressure plate is provided on the cross beam, and an insertion hole is provided on the cross beam. The protective top cover includes a lower edge ring, an insertion rod and a top cover ring. The lower edge ring is embedded in the steel shell, the cross beam passes through the insertion rod, a blade foot is provided at the bottom of the steel shell, and a triangular reinforcement rib is provided inside the steel shell.

[0008] Preferably, the internal support system includes a supporting special-shaped telescopic rod, a tensioning telescopic rod and a pull rod. Spiral cones are provided at both ends of the supporting special-shaped telescopic rod. A tightening twist is provided on the supporting special-shaped telescopic rod. The tensioning telescopic rod includes an arc-shaped pressure plate and a tensioning device. The spiral cone is arranged in the tensioning device.

[0009] Preferably, the bottom of the steel shell is provided with bottom sealing concrete, the casing reinforcement ring includes a cross brace and a moving wheel, the moving wheel is arranged at the end of the cross brace, the cross brace is connected to a moving vertical pole through a pull-down telescopic rod and an upper telescopic rod on the side facing the built pipeline, a lifting platform is arranged on the moving vertical pole, and the lifting platform includes a V-shaped telescopic rod, a platform plate and a connecting rod.

[0010] Preferably, an internal support system is provided in the steel formwork, a pouring port is provided at the bottom of the steel formwork, an exhaust hole is provided at the top of the steel formwork, and a lining layer is poured between the sleeve of the side pipe and the steel formwork.

[0011] This construction method of the pipeline construction system with side connection and connection at different elevations in a complex urban environment with limited space includes the following steps: S1. Construction of pull-out piles: construct steel pipe pull-out piles around the designed location of the caisson; S2. Steel shell caisson construction: Use the steel shell pressing device to press down the steel shell of the caisson, connect the steel shell in sections and take soil; S3, pouring concrete to seal the bottom of the caisson; then reinforcing the soil around the caisson; S4. Internal support installation: Install the internal support system in the built pipeline; S5. Side connection construction: a side connection pipe is set between the caisson and the existing pipeline, a casing reinforcement ring and a lifting platform are set inside the side connection pipe, and the lining layer of the side connection pipe is constructed through a steel formwork.

[0012] Preferably, in step S5, after the steel shell reaches the designed stratum, bottom sealing concrete is set, a casing reinforcement ring is set in the side pipe, the casing reinforcement ring includes a cross brace and a moving wheel, the cross brace is connected between the vertical poles by a pull-down telescopic rod and an upper telescopic rod, a lifting platform is set on the moving vertical pole, the lifting platform includes a V-shaped telescopic rod, a platform plate and a connecting rod; the lifting platform is used to dismantle the pipe segments of the built pipeline, the pipe segments are dismantled by pulling open with a hand winch, and then the side pipe casing is welded, a steel formwork is set in the casing, an internal support system is set in the steel formwork, a casting port is set at the bottom of the steel formwork, an exhaust hole is set on the upper part of the steel formwork, and a lining layer is cast on the inner side of the casing through the steel formwork.

[0013] The beneficial effects of the present invention are: 1) The present invention develops a steel shell pressing device, wherein a lower edge ring and a penetration rod are arranged on the protective top cover, and the bottom of the protective top cover is embedded in the steel shell, thereby increasing the contact area between the protective top cover and the steel shell and avoiding damage to the steel shell during the sinking process.

[0014] 2) The present invention has developed a steel shell sinking technology, which uses a hydraulic winch and a steel pipe pull-out pile to cooperate. A hydraulic winch is arranged on the top of the pull-out pile. The hydraulic winch is connected to the crossbeam on the protective top cover through a steel wire. The sinking speed of the steel shell is controlled by controlling the speed of the hydraulic winch, thereby ensuring the quality of the steel shell sinking construction.

[0015] 3) The present invention has developed an internal steel support technology, which is suitable for multi-scenario construction procedures through the coordinated construction of tensioning telescopic rods and supporting special-shaped telescopic rods, reduces material turnover construction, and reduces construction costs.

[0016] 4) The present invention has developed an in-hole auxiliary assembly technology, which solves the problem of erecting the support platform in the side pipe through the application of cross braces and movable vertical poles, reduces the difficulty of side connection construction, and speeds up the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the side connection construction of pipelines at different elevations of the present invention; Figure 2 This is a schematic diagram of the steel shell pressure sinking construction; Figure 3 It is a schematic diagram of the connection between the crossbeam and the hydraulic winch; Figure 4 It is a schematic diagram of the internal steel support; Figure 5 This is a schematic diagram of the auxiliary assembly bracket in the hole; Figure 6 It is a lifting platform diagram; Figure 7 It is a schematic diagram of a cross brace; Figure 8 It is the construction drawing of the lining layer.

[0018] Explanation of the reference numerals: 1-new pipeline, 2-caisson, 3-side pipe, 4-built pipeline, 5-steel pipe anti-pullout pile, 6-steel wire, 7-crossbeam, 8-protective top cover, 9-pressure plate, 10-hydraulic winch, 11-steel shell, 12-blade foot, 13-triangular reinforcement rib, 14-bottom concrete, 15-casing reinforcement ring, 16-pull-down telescopic rod, 17-mobile vertical pole, 18-lifting platform, 19-upper pull rod, 20-V-shaped telescopic rod, 21-flat Table, 22-connecting rod, 23-sleeve, 24-cross brace, 25-moving wheel, 26-lower edge ring, 27-insertion hole, 28-insertion rod, 29-pipe segment, 30-pull rod, 31-fastening button, 32-arc pressure plate, 33-tensioning telescopic rod, 34-spiral cone, 35-tensioning device, 36-supporting special-shaped telescopic rod, 37-casting mouth, 38-lining layer, 39-steel formwork, 40-exhaust hole, 41-top cover ring, 42-internal support system. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for ordinary persons in the art, without departing from the principle of the present invention, the present invention can also be modified in some ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0020] Embodiment 1 As an example, Figures 1 to 8 As shown, this complex urban environment with limited space and side connection to connect pipelines at different elevations includes a casing reinforcement ring 15, a lifting platform 18 and a steel shell pressing device, and the steel shell pressing device includes a steel pipe anti-pulling pile 5 and a protective top cover 8; like Figures 1 to 3 As shown, there is a large difference in elevation between the newly built pipeline 1 and the existing pipeline 4, a caisson 2 is arranged outside the existing pipeline 4, a side pipe 3 is arranged between the caisson 2 and the existing pipeline 4, steel pipe pull-out piles 5 are arranged around the caisson 2, a hydraulic winch 10 is arranged on the top of the pull-out pile 5, the hydraulic winch 10 is connected to the crossbeam 7 through a steel wire 6, and the crossbeam 7 is inserted into a protective top cover 8.

[0021] A pressure plate 9 is arranged on the cross beam 7, and an insertion hole 27 is arranged on the cross beam 7. The protective top cover 8 is composed of a lower edge ring 26, an insertion rod 28, a top cover ring 41, etc. The bottom of the protective top cover 8 is embedded in the steel shell 11, a blade foot 12 is arranged at the bottom of the steel shell 11, and a triangular reinforcement rib 13 is arranged inside the steel shell 11.

[0022] like Figure 4 As shown, an internal support system 42 is arranged in the built pipeline 4, and the internal support system 42 is composed of a supporting special-shaped telescopic rod 36, a tensioning telescopic rod 24, a pull rod 30, etc., spiral cones 34 are arranged at both ends of the supporting special-shaped telescopic rod 36, a fastening twist 31 is arranged on the supporting special-shaped telescopic rod 36, and the spiral cone 34 is arranged in the tensioning device 35, and the tensioning telescopic rod 24 is composed of an arc-shaped pressure plate 32, a tensioning device 35, etc.

[0023] like Figures 5 to 7 As shown, after the steel shell 11 reaches the designed stratum, a bottom sealing concrete 14 is set, and a casing reinforcement ring 15 is set in the side pipe 3. The casing reinforcement ring 15 is composed of a cross brace 24, a moving wheel 25, etc. The moving wheel 25 is arranged at the end of the cross brace 24. The cross brace 24 is connected to the moving vertical pole 17 by a downward pull telescopic rod 16 and an upward pull telescopic rod 19. A lifting platform 18 is set on the moving vertical pole 17, and the lifting platform 18 is composed of a V-shaped telescopic rod 20, a platform plate 21, a connecting rod 22, etc.

[0024] like Figure 8 As shown, an internal support system 42 is arranged in the steel template 39 , a pouring port 37 is arranged at the bottom of the steel template 39 , an exhaust hole 40 is arranged at the top of the steel template 39 , and a lining layer 38 is arranged inside the casing 23 .

[0025] Embodiment 2 As another embodiment, this embodiment 2 proposes, based on the embodiment 1, a construction method for a construction system of pipelines at different elevations connected to each other in a complex urban environment with limited space, including the following steps: S1. Construction of pull-out piles: construct steel pipe pull-out piles 5 around the designed position of caisson 2.

[0026] S2, steel shell caisson construction; Figures 1 to 3 As shown, there is a large difference in elevation between the newly built pipeline 1 and the existing pipeline 4, a caisson 2 is arranged outside the existing pipeline 4, a side pipe 3 is arranged between the caisson 2 and the existing pipeline 4, steel pipe pull-out piles 5 are arranged around the caisson 2, and the steel shell is pressed down using a steel shell pressing device, and the steel shell is extended in sections and soil is taken for construction. A hydraulic winch 10 is arranged on the top of the pull-out pile 5, and the hydraulic winch 10 is connected to the crossbeam 7 through a steel wire 6. The crossbeam 7 penetrates into the protective top cover 8, a pressure plate 9 is arranged on the crossbeam 7, and an insertion hole 27 is arranged on the crossbeam 7. The protective top cover 8 is composed of a lower edge ring 26, an insertion rod 28, a top cover ring 41, etc. The bottom of the protective top cover 8 is embedded in the steel shell 11, a blade foot 12 is arranged at the bottom of the steel shell 11, and a triangular reinforcement rib 13 is arranged inside the steel shell 11.

[0027] Extract soil from caisson; the soil is extracted by grabbing. The grab is opened and inserted into the soil, then closed to grab the soil and lift it out of the caisson to ensure the sinking speed and verticality of the steel shell.

[0028] S3, pouring concrete to seal the bottom of the caisson; then reinforcing the soil around the caisson 2.

[0029] S4, internal support installation; Figure 4 As shown, an internal support system 42 is set in the built pipeline 4, and the internal support system 42 is composed of a supporting special-shaped telescopic rod 36, a tensioning telescopic rod 24, a pull rod 30, etc., spiral cones 34 are provided at both ends of the supporting special-shaped telescopic rod 36, a fastening twist 31 is provided on the supporting special-shaped telescopic rod 36, and the spiral cone 34 is arranged in the tensioning device 35. The tensioning telescopic rod 24 is composed of an arc-shaped pressure plate 32, a tensioning device 35, etc.

[0030] S5, side connection construction; Figures 5 to 7 As shown, in-hole auxiliary assembly technology is adopted during side connection construction, and a telescopic platform is used for segment removal construction. The segment removal is pulled open by a hand winch, and then the casings on both sides are welded, wherein a casing reinforcement ring 15 is arranged in the side pipe 3, and the casing reinforcement ring 15 is composed of a cross brace 24, a moving wheel 25, etc. The cross brace 24 is connected to the moving vertical pole 17 by a downward pull-down telescopic rod 16 and an upward pull-up telescopic rod 19, and a lifting platform 18 is arranged on the moving vertical pole 17, and the lifting platform 18 is composed of a V-shaped telescopic rod 20, a platform plate 21, a connecting rod 22, etc.

[0031] Side lining construction; Figure 8 As shown, the lifting platform 18 is used to dismantle the pipe segments of the built pipeline 4. The pipe segments are dismantled by pulling them open with a hand winch, and then the casing 23 of the side pipe 3 is welded, a steel template 39 is set in the casing 23, an internal support system 42 is set in the steel template 39, a casting port 37 is set at the bottom of the steel template 39, an exhaust hole 40 is set on the upper part of the steel template 39, and a lining layer 38 is set on the inner side of the casing 23.

[0032] It should be noted that the parts in this embodiment that are the same or similar to those in the first embodiment can be referenced to each other and will not be described in detail in this application.

[0033] Embodiment 3 As another embodiment, this embodiment 3 proposes, on the basis of the embodiment 2, a more specific construction method for a construction system of pipelines with different elevations connected to the side in a complex urban environment with limited space: In step S1, the steel pipe anti-pullout pile 5 is constructed by static pressure method, the pile driver is adjusted vertically in place, and the deviation is less than 0.5%; the steel pipe anti-pullout pile 5 is lifted and pressed down to the pile position, and the pile pressure and speed are controlled as required; the pile length exceeds the single steel pipe and needs to be connected, and the interface is cleaned and welded to ensure the quality of the weld. The whole construction process requires fine operation to ensure the quality of the steel pipe anti-pullout pile 5 and meet the engineering requirements.

[0034] Step S3 specifically includes sealing the bottom of the caisson; selecting a dry or wet sealing method according to the on-site construction environment, and strictly controlling the thickness of the bottom seal according to the design requirements. During the construction process, the pouring height of the concrete can be detected by measuring instruments such as measuring ropes. If the thickness is insufficient, it will affect the bearing capacity and waterproof performance of the caisson; if the thickness is too large, it will cause material waste.

[0035] Foundation reinforcement: High-pressure jet grouting piles can be used to reinforce the soil around the caisson. The slurry mix ratio must be strictly prepared according to the design requirements. The water-cement ratio of cement slurry is generally 1.0-1.5, and an appropriate amount of admixtures must be added according to the actual situation of the project. In the process of preparing the slurry, the weight of cement and water must be accurately weighed, and a mixer must be used to fully stir to ensure that the slurry is uniform and has no precipitation.

[0036] In step S5, after the steel shell 11 reaches the designed stratum, a bottom seal concrete 14 is provided, and a casing reinforcement ring 15 is provided in the side pipe 3. Figures 5 to 7As shown, the casing reinforcement ring 15 includes a cross brace 24 and a moving wheel 25. The cross brace 24 is connected between the vertical poles 17 through a downward telescopic rod 16 and an upward telescopic rod 19. A lifting platform 18 is arranged on the moving vertical pole 17. The lifting platform 18 includes a V-shaped telescopic rod 20, a platform plate 21 and a connecting rod 22. The lifting platform 18 is used to dismantle the pipe segments of the built pipeline 4. The pipe segments are dismantled by pulling open a hand winch, and then the casing 23 of the side pipe 3 is welded. A steel template 39 is arranged in the casing 23, and an internal support system 42 is arranged in the steel template 39. A casting port 37 is arranged at the bottom of the steel template 39, and an exhaust hole 40 is arranged on the upper part of the steel template 39. The lining layer 38 is cast on the inner side of the casing 23 through the steel template 39.

[0037] It should be noted that the parts in this embodiment that are the same or similar to those in the second embodiment can be referenced to each other and will not be described in detail in this application.

[0038] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. A construction system for connecting pipelines at different elevations in a complex urban environment with limited space, characterized in that: It includes a casing reinforcement ring, a lifting platform and a steel shell pressing device, and the steel shell pressing device includes a steel pipe anti-pulling pile and a protective top cover; A caisson is set outside the built pipeline, a side pipe is set between the caisson and the built pipeline, steel pipe anti-pullout piles are set around the caisson, a hydraulic winch is set on the top of the anti-pullout piles, the bottom of the protective top cover is embedded in the steel shell, a crossbeam is passed through the protective top cover, and the hydraulic winch is connected to the crossbeam through a steel wire; An internal support system is arranged in the built pipeline, a casing reinforcement ring is arranged in the side pipe, and the lifting platform is arranged on the side of the casing reinforcement ring facing the built pipeline; a steel template is arranged in the side pipe.

2. According to claim 1, the construction system for connecting pipelines at different elevations in a complex urban environment with limited space is characterized by: A pressure plate is arranged on the cross beam, and an insertion hole is arranged on the cross beam. The protective top cover comprises a lower edge ring, an insertion rod and a top cover ring. The lower edge ring is embedded in the steel shell, the cross beam passes through the insertion rod, a blade foot is arranged at the bottom of the steel shell, and a triangular reinforcement rib is arranged inside the steel shell.

3. According to claim 1, the construction system for connecting pipelines at different elevations in a complex urban environment with limited space is characterized by: The inner support system includes a supporting special-shaped telescopic rod, a tensioning telescopic rod and a pull rod. Spiral cones are arranged at both ends of the supporting special-shaped telescopic rod. A fastening twist is arranged on the supporting special-shaped telescopic rod. The tensioning telescopic rod includes an arc-shaped pressing plate and a tensioning device. The spiral cone is arranged in the tensioning device.

4. According to claim 1, the construction system for connecting pipelines at different elevations in a complex urban environment with limited space is characterized by: The bottom of the steel shell is provided with bottom sealing concrete, the casing reinforcement ring includes a cross brace and a moving wheel, the moving wheel is arranged at the end of the cross brace, the cross brace is connected to a moving vertical pole through a pull-down telescopic rod and an upper telescopic rod on the side facing the built pipeline, a lifting platform is arranged on the moving vertical pole, and the lifting platform includes a V-shaped telescopic rod, a platform plate and a connecting rod.

5. According to claim 1, the construction system for connecting pipelines at different elevations in a complex urban environment with limited space is characterized by: An internal support system is arranged in the steel formwork, a pouring port is arranged at the bottom of the steel formwork, an exhaust hole is arranged at the top of the steel formwork, and a lining layer is poured between the sleeve of the side pipe and the steel formwork.

6. The construction method of the construction system of pipelines with different elevations connected to each other in a complex urban environment with limited space as claimed in claim 1, characterized in that: The following steps are involved: S1. Construction of pull-out piles: construct steel pipe pull-out piles around the designed location of the caisson; S2. Steel shell caisson construction: Use the steel shell pressing device to press down the steel shell of the caisson, connect the steel shell in sections and take soil; S3, pouring concrete to seal the bottom of the caisson; then reinforcing the soil around the caisson; S4. Internal support installation: Install the internal support system in the built pipeline; S5. Side connection construction: a side connection pipe is set between the caisson and the existing pipeline, a casing reinforcement ring and a lifting platform are set inside the side connection pipe, and the lining layer of the side connection pipe is constructed through a steel formwork.

7. The construction method for connecting pipelines at different elevations in a complex urban environment with limited space according to claim 6 is characterized by: In step S5, after the steel shell reaches the designed stratum, bottom sealing concrete is set, a casing reinforcement ring is set in the side pipe, the casing reinforcement ring includes a cross brace and a moving wheel, the cross brace is connected between the vertical poles through a downward pull telescopic rod and an upward pull telescopic rod, a lifting platform is set on the moving vertical pole, the lifting platform includes a V-shaped telescopic rod, a platform plate and a connecting rod; the lifting platform is used to dismantle the pipe segments of the built pipeline, the pipe segments are dismantled by pulling open with a hand winch, and then the side pipe casing is welded, a steel formwork is set in the casing, an internal support system is set in the steel formwork, a casting port is set at the bottom of the steel formwork, an exhaust hole is set on the upper part of the steel formwork, and a lining layer is cast on the inner side of the casing through the steel formwork.

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