CN-122013691-A - Inverted rainbow well rainwater box culvert and construction method thereof

CN122013691ACN 122013691 ACN122013691 ACN 122013691ACN-122013691-A

Abstract

The invention relates to a raintank culvert with a reverse raintank and a construction method thereof, wherein the raintank culvert with the reverse raintank comprises a cultank body and a reverse raintank, the reverse raintank comprises a pair of shafts and a communicating pipeline, the pair of shafts comprise a pair of first prefabricated sections which are arranged on two opposite sides of the cultank body and form an integrated prefabricated structure with the cultank body, a pair of second prefabricated sections which are respectively communicated and fixed below the pair of first prefabricated sections, the pair of first prefabricated sections are respectively communicated with two fractures of an existing sewage pipeline, and the communicating pipeline is positioned below the cultank body and is communicated between the pair of second prefabricated sections. According to the inverted rainbow well rainwater box culvert and the construction method thereof, the construction period is shortened, the second prefabricated section can provide stable support for the first prefabricated section, the stability of a shaft structure is guaranteed, and the width of the whole structure is reduced as far as possible through the integrated arrangement of the box culvert wall and the shaft wall, so that the influence on road traffic is reduced.

Inventors

HE ZHAO
LIU TAO
Pei Shengrui
MENG QINGXIN
LIANG JIAYUAN
ZHANG GUOZHI
CUI YUBO
SU JIE

Assignees

中国建筑第八工程局有限公司

Dates

Publication Date: 20260512
Application Date: 20260309

Claims (10)

1. The utility model provides a raintank culvert of raintank, includes and is used for cutting off and guiding with the existence of the box culvert body that has alternately of existing sewer line the existing sewer line bypasses the raintank well of raintank body, its characterized in that, the raintank well of falling includes a pair of pit shaft and communication pipeline, a pair of the pit shaft including locating the opposite both sides of box culvert body and with the box culvert body forms a pair of first prefabricated section of integration prefabricated construction, respectively communicates a pair of second prefabricated section of being fixed in the below of a pair of first prefabricated section, a pair of first prefabricated section respectively with two fracture intercommunication of existing sewer line, the communication pipeline is located the below of box culvert body and communicates between a pair of second prefabricated section.
2. The inverted rainbow well rain box culvert of claim 1, further comprising a cushion layer interposed between the second prefabricated section and a bottom surface of the foundation pit.
3. The inverted rainbow well rain box culvert of claim 1, further comprising a pipe cushion secured to a bottom surface of the foundation pit for supporting the communication pipe.
4. The inverted rainbow well box culvert of claim 1, wherein a top surface of the first prefabricated section is level with a top surface of the box culvert body, a pair of the shafts further comprising a pair of third prefabricated sections respectively connected and fixed above the pair of first prefabricated sections.
5. A method of constructing a inverted rainbow well culvert as claimed in claim 1, comprising the steps of; S1, excavating a foundation pit at a position to be constructed, and cutting off an existing sewage pipeline in the foundation pit, which collides with the box culvert body in position; s2, hoisting a pair of second prefabricated sections, and placing the pair of second prefabricated sections at the bottom of the foundation pit; S3, backfilling backfill soil in gaps between the peripheries of the pair of second prefabricated sections and the pair of second prefabricated sections, and communicating the communicating pipeline between the pair of second prefabricated sections in the backfilling process; s4, hoisting the integrated prefabricated structure, and butting a pair of first prefabricated sections above a pair of second prefabricated sections to form a pair of shafts; S5, respectively communicating a pair of shafts with two fractures of the existing sewage pipeline, and further backfilling the foundation pit.
6. The construction method of inverted rainbow well box culvert according to claim 5, further comprising a pipe cushion for supporting the communicating pipe, wherein the pipe cushion is fixed to the bottom of the foundation pit and located between the pair of second prefabricated sections before step S3 is performed, and when the communicating pipe is connected between the pair of second prefabricated sections, the communicating pipe is placed above the pipe cushion, and then the communicating pipe is connected between the pair of second prefabricated sections under the support of the pipe cushion.
7. The method for constructing a raintank culvert in an inverted raintank of claim 5, wherein in step S4, after the pair of first prefabricated sections and the pair of second prefabricated sections are butted, water stop treatment is performed at the butted seam, and the seam is caulked and hooked with cement mortar.
8. The method of constructing a inverted rainbow well box culvert of claim 5, wherein foundation pit supports are constructed around the perimeter of the foundation pit after step S1 is performed and before step S2 is performed.
9. The method of constructing a raintank culvert in a inverted siphon well according to claim 5, wherein after step S4 is performed and a pair of the shafts are formed, the amount of settlement of the foundation pit is continuously monitored, and step S5 is performed after settling stability is confirmed.
10. The construction method of inverted rainbow well rainwater box culvert according to claim 5, wherein when step S5 is performed and the foundation pit is further backfilled, backfilling is performed in layers, and the compaction degree of each layer of backfill is checked during the process of backfilling in layers.

Description

Inverted rainbow well rainwater box culvert and construction method thereof Technical Field The invention belongs to the field of inverted rainbow well construction, and particularly relates to an inverted rainbow well rainwater box culvert and a construction method thereof. Background When the urban road excavates and carries out rainwater box culvert construction, the circumstances that newly-built box culvert 4 and existing sewage pipes 3 route conflict can appear, in order to avoid existing sewage pipes 3 directly to pass box culvert 4, guarantee that the cross-sectional area that crosses of box culvert 4 is not influenced, can make existing sewage pipes 3 bypass box culvert 4 through setting up the mode of falling rainbow well 1 (as shown in fig. 1, fig. 2). The traditional inverted siphon well 1 is prepared by firstly carrying out inverted siphon well 1 construction after excavation, then backfilling to the height of the bottom of a box culvert 4 and finally carrying out box culvert 4 construction, wherein the construction method has the advantages that in order to ensure that enough working surface is needed when the box culvert 4 is constructed, the larger width is needed to be excavated, the influence on road traffic is larger, the inverted siphon well 1 needs to bypass the box culvert 4 from the lower part, the construction is carried out by strictly following the sequence of firstly making the inverted siphon well backfill and then making the box culvert, the construction period is longer, the box culvert 4 is poured firstly, and after the backfilling is completed, the pipeline at the bottom of the box culvert is constructed by adopting the jacking machinery 5 jacking pipe mode, and finally the inverted siphon well is poured (shown in fig. 3), the construction method can reduce the width needed to be excavated at the same time to a certain extent, the influence on the road traffic is reduced, but the construction difficulty is high, the requirements on the aspects such as technology and machinery are relatively high, and the construction is limited by natural factors such as geological conditions. Disclosure of Invention According to the inverted rainbow well rainwater box culvert and the construction method thereof, the construction period is shortened, the second prefabricated section is firstly constructed, and the first prefabricated section is constructed after the second prefabricated section is ensured to be stable in structure, so that the second prefabricated section can provide stable support for the first prefabricated section, the stability of a shaft structure is ensured, gaps between a shaft and the box culvert body are avoided through the integral arrangement of the box culvert body and the first prefabricated section, the width of the integral structure is reduced as much as possible, the excavation range of a foundation pit is reduced, and the influence on road traffic is reduced. The invention relates to a raintank culvert of a inverted siphon well, which comprises a culvert body crossed with an existing sewage pipeline and an inverted siphon well for cutting off and guiding the existing sewage pipeline to bypass the culvert body, wherein the inverted siphon well comprises a pair of shafts and a communicating pipeline, the pair of shafts comprise a pair of first prefabricated sections arranged on two opposite sides of the culvert body and formed into an integrated prefabricated structure with the culvert body, a pair of second prefabricated sections respectively communicated and fixed below the pair of first prefabricated sections, the pair of first prefabricated sections are respectively communicated with two breaks of the existing sewage pipeline, and the communicating pipeline is positioned below the culvert body and communicated between the pair of second prefabricated sections. The invention further improves the foundation pit and also comprises a cushion layer which is arranged between the second prefabricated section and the bottom surface of the foundation pit in a cushioning mode. The invention further improves the foundation pit and further comprises a pipeline cushion which is fixed on the bottom surface of the foundation pit and is used for supporting the communication pipeline. The invention further improves that the top surface of the first prefabricated section is consistent with the top surface elevation of the box culvert body, and the pair of shafts further comprises a pair of third prefabricated sections which are respectively communicated and fixed above the pair of first prefabricated sections. The invention relates to a construction method of a raintank culvert of an inverted raintank, which comprises the following steps of; S1, excavating a foundation pit at a position to be constructed, and cutting off an existing sewage pipeline in the foundation pit, which collides with the box culvert body in position; s2, hoisting a pair of second prefabricated sectio