Double-layer water passing trestle structure stretching across deep foundation pit and construction method of double-layer water passing trestle structure

Abstract

The invention provides a double-layer water passing trestle structure crossing a deep foundation pit and a construction method of the double-layer water passing trestle structure. The double-layer water passing trestle structure comprises an upper-layer water passing pipeline, a lower-layer water passing pipeline, a left ground anchor, a right ground anchor, a left inhaul cable system, a right inhaul cable system, a left supporting tower column, a right supporting tower column, a cable hanging system, an upper-layer water passing pipeline end support, a lower-layer water passing pipeline fixing support and a cable rope. The steel wire rope inhaul cable system, the steel pipe tower columns, the concrete ground anchors and the water passing pipelines are fixedly connected, the structure is similar to the stress characteristic of a cable-stayed bridge, the upper-layer water passing passage and the lower-layer water passing passage meet the structural stress requirement of crossing the large foundation pit section at the same time, and the problems that drainage of the slope crest of the deep foundation pit is difficult, and the water passing pipelines stretch across the deep foundation pit are solved.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit drainage construction, and in particular to a double-layer water-passing trestle structure spanning a deep foundation pit and a construction method thereof. Background Art

[0002] With the rapid development of urban infrastructure construction, foundation pit construction is often required during civil construction. During the construction process, surface water and groundwater infiltration are often encountered, causing site flooding and foundation pit slope collapse, which affects construction. Especially for deep and large foundation pits, the top of the foundation pit has a large elevation difference. Groundwater is pumped to the open ditch on the top of the foundation pit through well point dewatering or pipe well dewatering. Due to different drainage directions in the drainage ditch, some drainage is collected in the middle of the drainage ditch on one side of the foundation pit slope, and some is collected in the open ditch position at the corner of the foundation pit, and then drained out of the foundation pit. After the drainage on the top of the foundation pit on one side is collected, it is difficult to drain the collected rainwater on the same side of the foundation pit. It is necessary to use a drainage pipe across the foundation pit to drain it to the drainage point on the other side.

[0003] Therefore, in order to ensure the safe and stable drainage of the open ditch on the top of the foundation pit and to drain it to the other side without affecting the normal construction of the foundation pit and the main structure, it is necessary to establish a supporting structure for the drainage pipe across the foundation pit. Summary of the invention

[0004] The purpose of the present invention is to provide a double-layer water-passing trestle structure across a deep foundation pit and a construction method thereof, so as to solve the problems of difficulty in drainage of the slope top of the deep foundation pit and difficulty in construction of a supporting structure of a water-passing pipe across the deep foundation pit.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A double-layer water-passing trestle structure across a deep foundation pit, the structural features of which are that it includes an upper water-passing pipe, a lower water-passing pipe, a left ground anchor, a right ground anchor, a left cable system, a right cable system, a left supporting tower column, a right supporting tower column, a hanging cable system, an upper water-passing pipe end support, a lower water-passing pipe fixed support and a cable wind rope;

[0007] The left supporting tower column and the right supporting tower column each include two columns anchored in the soil, and a first column connection system, an upper layer pipeline support system, a lower layer pipeline support system and a second column connection system are sequentially arranged between the two columns from top to bottom;

[0008] The upper pipe support system of the left support tower column and the right support tower column is supported and connected with the upper water pipe, and both ends of the upper water pipe are fixedly connected with the corresponding end supports of the upper water pipe;

[0009] The lower layer pipe support system of the left supporting tower column and the right supporting tower column supports and connects the lower layer water pipe, and both ends of the lower layer water pipe are fixedly connected to the corresponding lower layer water pipe fixing supports;

[0010] The left cable system is provided between the left ground anchor, the left support tower and the upper water pipe; the right cable system is provided between the right ground anchor, the right support tower and the upper pipe;

[0011] The upper water pipe and the lower water pipe are connected via the hanging cable system;

[0012] Said wind ropes are arranged at both ends of said upper water-passing pipe, and said wind ropes are connected to the left ground anchor or the right ground anchor on the corresponding side.

[0013] Furthermore, the upper water pipe is provided with a first connecting lug and a second connecting lug;

[0014] The left ground anchor and the right ground anchor are both provided with a fifth connecting lifting lug and a sixth connecting lifting lug;

[0015] The tops of the left supporting tower column and the right supporting tower column are both provided with a seventh connecting lifting lug and an eighth connecting lifting lug;

[0016] The left cable system is provided between the fifth and sixth connecting lugs and the corresponding seventh connecting lug, and between the eighth connecting lug and the corresponding first and second connecting lugs; the right cable system is provided between the fifth and sixth connecting lugs and the corresponding eighth connecting lug, and between the seventh connecting lug and the corresponding first and second connecting lugs.

[0017] Furthermore, the left cable system and the right cable system each include a shackle, a steel wire rope, a rope clamp, a first tensioning cable guide chain and a second tensioning cable guide chain;

[0018] The first connecting lifting lug is connected to the corresponding steel wire rope through a shackle; the second connecting lifting lug is connected to the corresponding steel wire rope through the second tensioning rope guide chain;

[0019] The fifth connecting lifting lug is connected to the corresponding steel wire rope through a shackle; the sixth connecting lifting lug is connected to the corresponding steel wire rope through the first tensioning rope guide chain;

[0020] The seventh connecting lifting eye and the eighth connecting lifting eye are respectively connected to the corresponding steel wire ropes through shackles;

[0021] The end of the steel wire rope is provided with the rope clamp.

[0022] Furthermore, the first connecting lug includes two first special-shaped perforated steel plates, two first circular steel plates and four first stiffening rib plates;

[0023] The first special-shaped perforated steel plate is fixedly connected to the upper water pipe, and the first special-shaped perforated steel plate is vertically fixedly connected to the first circular steel plate; the first special-shaped perforated steel plate is fixedly provided with the first stiffening rib plate, and the first stiffening rib plate is fixedly connected to the upper water pipe;

[0024] The second connecting lug comprises a second special-shaped perforated steel plate, two second circular steel plates and four second stiffening rib plates;

[0025] The second special-shaped perforated steel plate is fixedly connected to the upper water pipe; the second special-shaped perforated steel plate is vertically fixedly connected to the second circular steel plate; the second special-shaped perforated steel plate is fixedly provided with the second stiffening rib plate; the second stiffening rib plate is fixedly connected to the upper water pipe.

[0026] Further, the fifth connecting lifting lug and the sixth connecting lifting lug include a first connecting steel plate, four first angle steels, four second connecting steel plates, two fourth special-shaped perforated steel plates, two third circular steel plates and four fourth stiffening rib plates;

[0027] Two ends of the first angle steel are respectively fixedly connected to the first connecting steel plate and the corresponding second connecting steel plate;

[0028] The first connecting steel plate is fixedly connected to the fourth special-shaped perforated steel plate; the fourth special-shaped perforated steel plate is vertically fixedly connected to the third circular ring steel plate; the fourth stiffening rib plate is fixedly connected to both the first connecting steel plate and the fourth special-shaped perforated steel plate.

[0029] Furthermore, the seventh connecting ear and the eighth connecting ear each include two fifth special-shaped perforated steel plates and two fourth circular steel plates; the fifth special-shaped perforated steel plate is vertically fixedly connected to the fourth circular steel plate, and the fifth special-shaped perforated steel plate is fixedly connected to the top of the corresponding column.

[0030] Furthermore, the hanging rope system includes a left hanging rope and a right hanging rope; the upper water pipe is provided with a third connecting lug; the lower water pipe is provided with a fourth connecting lug; the upper water pipe is connected to the left hanging rope and the right hanging rope by the corresponding third connecting lug; the lower water pipe is connected to the left hanging rope and the right hanging rope by the corresponding fourth connecting lug.

[0031] Furthermore, the third connecting ear and the fourth connecting ear include a third special-shaped perforated steel plate and four third stiffening ribs; the third special-shaped perforated steel plate is fixedly connected to the corresponding water pipe; the third special-shaped perforated steel plate is fixedly provided with a third stiffening rib, and the third stiffening rib is fixedly connected to the corresponding water pipe.

[0032] Furthermore, the upper-layer pipe support system and the lower-layer pipe support system both include a back-pressure beam structure and a support beam structure fixed between the two columns; the upper-layer water pipe or the lower-layer water pipe is assembled and connected between the support beam structure and the back-pressure beam structure; rubber pads are provided between the top supporting end of the support beam structure and the corresponding outer wall of the pipe, and between the bottom back-pressure end of the back-pressure beam structure and the corresponding outer wall of the pipe.

[0033] Based on the same inventive concept, the present invention also provides a construction method for a double-layer water-passing trestle structure across a deep foundation pit, which comprises the following steps:

[0034] Step 1: Process the structural assembly parts in advance at the manufacturer according to the design drawings;

[0035] Step 2: Construct the left and right ground anchors at the construction site according to the design drawings;

[0036] Step 3: Carry out the construction of the left supporting tower column and the right supporting tower column, and complete the hoisting of the upper water pipe and the lower water pipe;

[0037] Step 4: Construct the fixed support of the lower water pipe according to the design drawings, and install the left and right upper water pipe end supports;

[0038] Step 5: Install the left cable system, right cable system and hanging cable system.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] (i) The present invention adopts a steel wire rope system, a steel pipe tower column, a concrete anchor, and a water pipe fixing method, and the structure is similar to the stress characteristics of a cable-stayed bridge, so that the upper and lower water passages can simultaneously meet the structural stress requirements across a large foundation pit section.

[0041] (ii) The present invention can process the connecting steel plates, connecting beams, supporting beams, etc. in the factory according to the design drawings, and fix them by welding on site, use steel tower columns to support the water pipe, and use a cable system and a hanging cable system to tie and connect the water pipe. Finally, the cable is tied with an anchor, and a guide chain is used to fix it. Therefore, the present invention has the advantages of convenient installation and fixation, and a safe and stable structure after fixed connection. It solves the difficulty of drainage on the slope top of a deep foundation pit and the support problem of the water pipe across the deep foundation pit, and can also provide a construction reference for the relocation of urban pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of a double-layer water-passing trestle structure across a deep foundation pit in one embodiment of the present invention;

[0043] Figure 2 It is a schematic diagram of the bottom structure of the fifth connecting lifting eye and the sixth connecting lifting eye in one embodiment of the present invention;

[0044] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0045] Figure 4 for Figure 3 Sectional view at the middle BB;

[0046] Figure 5 It is a schematic diagram of the structure of the fifth connecting lifting eye and the sixth connecting lifting eye in one embodiment of the present invention;

[0047] Figure 6 for Figure 5 Sectional view at CC;

[0048] Figure 7 A schematic diagram of the structure of a left supporting tower column and a right supporting tower column in an embodiment of the present invention;

[0049] Figure 8 It is a structural schematic diagram of a first connection system of a column in an embodiment of the present invention;

[0050] Fig. 9 for Figure 8 Sectional view at DD in the middle;

[0051] Fig.10 It is a schematic diagram of the structure of the seventh connecting lifting eye and the eighth connecting lifting eye in one embodiment of the present invention;

[0052] Fig.11 for Fig.10 Sectional view at EE;

[0053] Fig.12 It is a schematic diagram of the structure of the upper pipeline support system and the lower pipeline support system in one embodiment of the present invention;

[0054] Fig.13 for Fig.12 Cross-sectional view at FF;

[0055] Fig.14 A schematic diagram of a back pressure beam structure in an embodiment of the present invention;

[0056] Fig.15 for Fig.14 Sectional view at GG in the middle;

[0057] Fig.16 for Fig.14 Sectional view at HH in the middle;

[0058] Fig.17 A schematic diagram of a support beam structure in an embodiment of the present invention;

[0059] Fig.18 for Fig.17 Sectional view at II in the middle;

[0060] Fig.19 for Fig.17 Sectional view at JJ in the middle;

[0061] Fig. 20 for Fig.17 Sectional view at KK in the middle;

[0062] Fig.21 A schematic diagram of the connection between a pipeline longitudinal stopper and a pipeline in an embodiment of the present invention;

[0063] Fig. 22 for Fig.21 Sectional view at LL;

[0064] Fig.23 A schematic diagram of a lifting lug on a water pipe in an embodiment of the present invention;

[0065] Fig.24 for Fig.23 Sectional view at MM;

[0066] Fig.25 It is a partial detailed view of the upper water pipe lifting lug in one embodiment of the present invention;

[0067] Fig.26 It is a partial detailed view of the lower water pipe lifting lug in one embodiment of the present invention;

[0068] Fig. 27 for Fig.25 Sectional view at NN in the middle;

[0069] Fig.28 for Fig.25 Sectional view at OO;

[0070] Fig.29 It is a schematic diagram of the left side structure of a double-layer water-crossing trestle structure when the cables are tightened in one embodiment of the present invention.

[0071] In the figure:

[0072] 1. Upper water pipe; 2. Lower water pipe; 3. Left ground anchor; 4. Right ground anchor; 5. Left cable system; 6. Right cable system; 7. Left support tower column; 8. Right support tower column; 9. Hanging cable system; 10. Upper water pipe end support; 11. Lower water pipe fixed support; 12. First connecting lug; 13. Second connecting lug; 14. Third connecting lug; 15. Fourth connecting lug; 16. Fifth connecting lug; 17. Sixth connecting lug; 18. Shackle; 19. Wire rope; 20. Rope clamp; 21. First tensioning rope guide chain; 22. Column; 23. First connection system of column; 24. Second connection system of column ; 25. Upper pipeline support system; 26. Lower pipeline support system; 27. Seventh connecting eye; 28. Eighth connecting eye; 29. ​​Left hanging rope; 30. Right hanging rope; 31. Second tightening rope guide chain; 32. Cable wind rope; 1201. First special-shaped perforated steel plate; 1202. First circular steel plate; 1203. First steel stiffening rib plate; 1301. Second special-shaped perforated steel plate; 1302. Second circular steel plate; 1303. Second steel stiffening rib plate; 1401. Third special-shaped perforated steel plate; 1402. Third stiffening rib plate; 1601. First connecting steel plate; 1602. First angle steel; 1603. Second connecting steel plate; 1 604, the fourth special-shaped perforated steel plate; 1605, the third circular ring steel plate; 1606, the fourth stiffening rib plate; 2501, the counter-pressure beam structure; 25011, the third connecting steel plate; 25012, the fourth connecting plate; 25013, the first double-jointed I-beam; 25014, the fifth connecting steel plate; 25015, the sixth connecting steel plate; 25016, the seventh connecting steel plate; 25017, the eighth connecting steel plate; 25018, the ninth connecting steel plate; 2502, the supporting beam structure; 25021, the longitudinal limit stopper; 25022, the transverse limit stopper; 25023, the tenth connecting steel plate; 25024, the eleventh connecting steel plate ; 25025, the twelfth connecting steel plate; 25026, the thirteenth connecting steel plate; 25027, the fourteenth connecting steel plate; 25028, the fifteenth connecting steel plate; 25029, the sixteenth connecting steel plate; 250210, the seventeenth connecting steel plate; 250211, the eighteenth connecting steel plate; 250212, the second double-jointed I-beam; 250213, the first double-jointed channel steel connecting beam; 250214, the second double-jointed channel steel connecting beam; 250215, the nineteenth connecting steel plate; 250216, the twentieth connecting steel plate; 2503, rubber pad; 2701, the fifth special-shaped steel plate with holes; 2702, the fourth circular ring steel plate. DETAILED DESCRIPTION

[0073] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0074] like Figure 1-Figure 29 As shown, a double-layer water-passing trestle structure across a deep foundation pit in this embodiment includes an upper water-passing pipe 1, a lower water-passing pipe 2, a left ground anchor 3, a right ground anchor 4, a left cable system 5, a right cable system 6, a left support tower 7, a right support tower 8, a hanging cable system 9, an upper water-passing pipe end support 10, a lower water-passing pipe fixed support 11 and a cable wind rope 32. The left ground anchor 3 and the right ground anchor 4 are respectively arranged on the left and right sides of the deep foundation pit, and the left ground anchor 3 and the right ground anchor 4 are both concrete ground anchors. The left support tower 7 and the right support tower 8 are respectively arranged in the middle of the left and right sections of the foundation pit, and the bottoms of the left support tower 7 and the right support tower 8 are anchored in the soil.

[0075] The left supporting tower column 7 and the right supporting tower column 8 both include two columns 22 anchored in the soil, and a first column connection system 23, an upper layer pipeline support system 25, a lower layer pipeline support system 26 and a second column connection system 24 are sequentially arranged between the two columns 22 from top to bottom.

[0076] The upper pipe support system 25 of the left support tower column 7 and the right support tower column 8 supports and is connected to the upper water pipe 1 , and both ends of the upper water pipe 1 are fixedly connected to the corresponding upper water pipe end supports 10 .

[0077] The lower layer pipe support system 26 of the left support tower column 7 and the right support tower column 8 supports and is connected to the lower layer water pipe 2 , and both ends of the lower layer water pipe 2 are fixedly connected to the corresponding lower layer water pipe fixed supports 11 .

[0078] The left cable system 5 is provided between the left ground anchor 3 , the left supporting tower column 7 and the upper water pipe 1 ; the right cable system 6 is provided between the right ground anchor 4 , the right supporting tower column 8 and the upper pipe 1 .

[0079] The upper water pipe 1 and the lower water pipe 2 are connected via the hanging cable system 9 .

[0080] The upper water pipe 1 is provided with the guy rope 32 at both ends, and the guy rope 32 is connected to the left ground anchor 3 or the right ground anchor 4 on the corresponding side.

[0081] like Figure 1 , Fig.23 and Fig.29 As shown, in this embodiment, the upper water pipe 1 is provided with a first connecting lug 12 and a second connecting lug 13 .

[0082] The left ground anchor 3 and the right ground anchor 4 are both provided with a fifth connecting lifting lug 16 and a sixth connecting lifting lug 17 .

[0083] The tops of the left supporting tower column 7 and the right supporting tower column 8 are both provided with a seventh connecting lifting lug 27 and an eighth connecting lifting lug 28 .

[0084] The left cable system 5 is provided between the fifth connecting lug 16 and the sixth connecting lug 17 and the corresponding seventh connecting lug 27, and between the eighth connecting lug 28 and the corresponding first connecting lug 12 and the second connecting lug 13; the right cable system 6 is provided between the fifth connecting lug 16 and the sixth connecting lug 17 and the corresponding eighth connecting lug 28, and between the seventh connecting lug 27 and the corresponding first connecting lug 12 and the second connecting lug 13.

[0085] like Figure 1 and Fig.29 As shown, in this embodiment, the left cable system 5 and the right cable system 6 both include a shackle 18 , a steel wire rope 19 , a rope clamp 20 , a first tensioning cable guide chain 21 and a second tensioning cable guide chain 31 .

[0086] The first connecting lifting lug 12 is connected to the corresponding steel wire rope 19 by a shackle 18 ; the second connecting lifting lug 13 is connected to the corresponding steel wire rope 19 by a shackle 18 .

[0087] The fifth connecting lifting lug 16 is connected to the corresponding steel wire rope 19 by a shackle 18 ; the sixth connecting lifting lug 17 is connected to the corresponding steel wire rope 19 by a shackle 18 .

[0088] The seventh connecting lifting eye 27 and the eighth connecting lifting eye 28 are respectively connected to the corresponding steel wire rope 9 by means of a shackle 18 .

[0089] The end of the steel wire rope 19 is provided with the rope clamp 20 .

[0090] like Figure 1 , Fig.23 , Fig.25 , Figure 27-Figure 29 As shown, in this embodiment, the first connecting lug 12 includes two first special-shaped perforated steel plates 1201 , two first circular steel plates 1202 and four first stiffening rib plates 1203 .

[0091] The first special-shaped perforated steel plate 1201 is fixedly connected to the upper water pipe 1, and the first special-shaped perforated steel plate 1201 is vertically fixedly connected to the first circular steel plate 1202; the first special-shaped perforated steel plate 1201 is fixedly provided with the first stiffening rib plate 1203, and the first stiffening rib plate 1203 is fixedly connected to the upper water pipe 1.

[0092] The second connecting lug 13 includes a second special-shaped perforated steel plate 1301 , two second annular steel plates 1302 and four second stiffening rib plates 1303 .

[0093] The second special-shaped perforated steel plate 1301 is fixedly connected to the upper water pipe 1; the second special-shaped perforated steel plate 1301 is vertically fixedly connected to the second circular steel plate 1302; the second special-shaped perforated steel plate 1301 is fixedly provided with the second stiffening rib plate 1303; the second stiffening rib plate 1303 is fixedly connected to the upper water pipe 1.

[0094] like Figure 1-Figure 6 and Fig.29 As shown, in this embodiment, the fifth connecting ear 16 and the sixth connecting ear 17 include a first connecting steel plate 1601, four first angle steels 1602, four second connecting steel plates 1603, two fourth special-shaped perforated steel plates 1604, two third circular ring steel plates 1605 and four fourth stiffening rib plates 1606.

[0095] Both ends of the first angle steel 1602 are fixedly connected to the first connecting steel plate 1601 and the corresponding second connecting steel plate 1603 respectively.

[0096] The first connecting steel plate 1601 is fixedly connected to the fourth special-shaped perforated steel plate 1604 ; the fourth special-shaped perforated steel plate 1604 is vertically fixedly connected to the third circular ring steel plate 1605 ; the fourth stiffening rib plate 1606 is fixedly connected to both the first connecting steel plate 1601 and the fourth special-shaped perforated steel plate 1604 .

[0097] like Figure 1 , Figure 8-Figure 11 and Fig.29 As shown, in this embodiment, the seventh connecting ear 27 and the eighth connecting ear 28 both include two fifth special-shaped perforated steel plates 2701 and two fourth circular steel plates 2702; the fifth special-shaped perforated steel plate 2701 is vertically fixedly connected to the fourth circular steel plate 2702, and the fifth special-shaped perforated steel plate 2701 is fixedly connected to the top of the corresponding column 22.

[0098] like Figure 1 and Fig.29As shown, in this embodiment, the hanging rope system 9 includes a left hanging rope 29 and a right hanging rope 30; a third connecting lug 14 is provided on the upper water pipe 1; a fourth connecting lug 15 is provided on the lower water pipe 2; the upper water pipe 1 is connected to the left hanging rope 29 and the right hanging rope 30 by means of the corresponding third connecting lug 14; the lower water pipe 2 is connected to the left hanging rope 29 and the right hanging rope 30 by means of the corresponding fourth connecting lug 15.

[0099] like Figure 1 , Figure 23-Figure 26 and Fig.29 As shown, in this embodiment, the third connecting ear 14 and the fourth connecting ear 15 include a third special-shaped perforated steel plate 1401 and four third stiffening ribs 1402; the third special-shaped perforated steel plate 1401 is fixedly connected to the corresponding water pipe; the third special-shaped perforated steel plate 1401 is fixedly provided with a third stiffening rib 1402, and the third stiffening rib 1402 is fixedly connected to the corresponding water pipe.

[0100] like Figure 8-Figure 9 As shown, in this embodiment, the first column connection system 23 includes a plurality of connection steel plates, stiffening plates, circular steel plates, double I-beams, and double channel steels. The first column connection system 23 is fixedly connected to the corresponding column 22. The second column connection system 24 includes a plurality of connection steel plates, stiffening plates, circular steel plates, double I-beams, and double channel steels. The second column connection system 24 is fixedly connected to the corresponding column 22.

[0101] like Figure 1 , Figure 12-Figure 22 and Fig.29 As shown, in this embodiment, the upper pipe support system 25 and the lower pipe support system 26 both include a back-pressure beam structure 2501 and a support beam structure 2502 fixed between the two columns 22, and the upper water pipe 1 or the lower water pipe 2 is assembled and connected between the support beam structure 2502 and the back-pressure beam structure 2501; rubber pads 2503 are provided between the top supporting end of the support beam structure 2502 and the corresponding outer wall of the pipe, and between the bottom back-pressure end of the back-pressure beam structure 2501 and the corresponding outer wall of the pipe.

[0102] Specifically, the anti-pressure beam structure 2501 includes a third connecting steel plate 25011, a fourth connecting steel plate 25012, a first double-jointed I-beam 25013, a fifth connecting steel plate 25014, a sixth connecting steel plate 25015, a seventh connecting steel plate 25016, an eighth connecting steel plate 25017, and a ninth connecting steel plate 25018. The anti-pressure beam structure 2501 is fixedly connected to the third connecting steel plate 25011, the fourth connecting steel plate 25012, and the column 22. The first double-jointed I-beam 25013 in the anti-pressure beam structure 2501 is fixedly connected to the fifth connecting steel plate 25014, the sixth connecting steel plate 25015, the seventh connecting steel plate 25016, and the eighth connecting steel plate 25017. The ninth connecting steel plate 25018 is fixedly connected to the seventh connecting steel plate 25016 and the eighth connecting steel plate 25017. A rubber cushion layer 2503 is provided between the anti-pressure beam structure 2501 and the upper water pipe 1 and the lower water pipe 2.

[0103] The support beam structure 2502 includes a longitudinal limit block 25021, a transverse limit block 25022, a tenth connecting steel plate 25023, an eleventh connecting steel plate 25024, a twelfth connecting steel plate 25025, a thirteenth connecting steel plate 25026, a fourteenth connecting steel plate 25027, a fifteenth connecting steel plate 25028, a sixteenth connecting steel plate 25029, a seventeenth connecting steel plate 250210, an eighteenth connecting steel plate 250211, a second double-jointed I-beam 250212, a first double-jointed channel-steel connecting beam 250213, a second double-jointed channel-steel connecting beam 250214, a nineteenth connecting steel plate 250215, and a twentieth connecting steel plate 250216.

[0104] The first double-jointed channel steel connecting beam 250213 is fixedly connected to the nineteenth connecting steel plate 250215 and the fourteenth connecting steel plate 25027. The second double-jointed channel steel connecting beam 250214 is fixedly connected to the nineteenth connecting steel plate 250215. The nineteenth connecting steel plate 250215 is fixedly connected to the column 22. The twentieth connecting steel plate 250216 is fixedly connected to the column 22 and the nineteenth connecting steel plate 250215. The first double-jointed channel steel connecting beam 250213 is fixedly connected to the nineteenth connecting steel plate 250215 and the fourteenth connecting steel plate 25027. The fourteenth connecting steel plate 25027 is fixedly connected to the first double-jointed channel steel connecting beam 250213 and the second double-jointed I-beam 250212.

[0105] The second double-joined I-beam 250212 is fixedly connected to the transverse limit stopper 25022, the tenth connecting steel plate 25023, the twelfth connecting steel plate 25025, the thirteenth connecting steel plate 25026, the fourteenth connecting steel plate 25027, and the fifteenth connecting steel plate 25028. The transverse limit stopper 25022 is fixedly connected to the tenth connecting steel plate 25023 and the eleventh connecting steel plate 25024. The thirteenth connecting steel plate 25026 is fixedly connected to the twelfth connecting steel plate 25025 and the second double-joined I-beam 250212. The longitudinal limit stopper 25021 includes the sixteenth connecting steel plate 25029, the seventeenth connecting steel plate 250210, and the eighteenth connecting steel plate 250211. The seventeenth connecting steel plate 250210 and the eighteenth connecting steel plate 250211 are fixedly connected to the sixteenth connecting steel plate 25029. The sixteenth connecting steel plate 25029, the seventeenth connecting steel plate 250210, and the eighteenth connecting steel plate 250211 are all fixedly connected to the upper water pipe 1 or the lower water pipe 2. A rubber pad 2503 is provided between the longitudinal limit stopper 25021 and the supporting beam structure 2502. A rubber pad 2503 is provided between the transverse limit stopper 25022 and the upper water pipe 1 or the lower water pipe 2.

[0106] This embodiment also provides a construction method for a double-layer water-passing trestle across a deep foundation pit, which comprises the following steps:

[0107] Step 1: Process the structural assembly parts in the factory in advance according to the design drawings. Specifically, the connecting steel plates, double-jointed channel steels, double-jointed I-beams, and lug steel components are processed and formed in the factory in advance according to the design drawings.

[0108] Step 2: construct the left ground anchor 3 and the right ground anchor 4 at the construction site according to the design drawings. Specifically, construct the left ground anchor and the right ground anchor at the construction site according to the design drawings, bury the fifth connection lug and the sixth connection lug according to the design drawings before pouring the ground anchor concrete; according to the design drawings, use a pile driver to drive the column into the ground to the design required elevation.

[0109] Step 3: Carry out the construction of the left supporting tower column 7 and the right supporting tower column 8, and complete the hoisting of the upper water pipe 1 and the lower water pipe 2.

[0110] Specifically, a crane and a climbing vehicle are used on site to construct and install the first column connection system, the second column connection system, the upper pipe support system, the lower pipe support system, and the seventh connection lug and the eighth connection lug of the left pipe support tower column and the right pipe support tower column. Before installing the counter-pressure beam in the upper pipe support system and the lower pipe support system, the upper water pipe and the lower water pipe are hoisted and installed, and then the counter-pressure beam, the longitudinal limit block and the transverse limit block are constructed.

[0111] Step 3: Carry out the construction of the left supporting tower column 7 and the right supporting tower column 8, and complete the hoisting of the upper water pipe 1 and the lower water pipe 2.

[0112] Step 4: construct the lower water pipe fixed support 11 according to the design drawings, and install the upper water pipe end supports 10 on the left and right sides.

[0113] Step 5: Install the left cable system 5, the right cable system 6 and the hanging cable system 9. Specifically, according to the design drawings, the left cable system and the right cable system are respectively connected to the fifth and sixth connecting lugs in the left and right ground anchors, and the seventh and eighth connecting lugs in the left supporting tower of the pipeline, and then connected to the first and second connecting lugs in the upper water pipe. Finally, the first tightening cable guide chain is used to tighten the cable system so that it is tied and fixed to the ground anchor system. The second tightening cable guide chain is used to tighten the cable system so that the upper water pipe is tied and fixed to the cable system, and the ends of the upper water pipe are tied with wind ropes on both sides. Finally, the hanging cable system 9 is installed.

[0114] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the embodiments made by those skilled in the art fall within the scope defined by the claims attached to the present invention.

Claims

1. A double-layer water-passing trestle structure across a deep foundation pit, characterized in that: It comprises an upper water pipe (1), a lower water pipe (2), a left ground anchor (3), a right ground anchor (4), a left cable system (5), a right cable system (6), a left support tower (7), a right support tower (8), a hanging cable system (9), an upper water pipe end support (10), a lower water pipe fixed support (11) and a cable wind rope (32); The left supporting tower column (7) and the right supporting tower column (8) both comprise two columns (22) anchored in the soil, and a first column connection system (23), an upper layer pipeline support system (25), a lower layer pipeline support system (26) and a second column connection system (24) are sequentially arranged between the two columns (22) from top to bottom; The upper pipe support system (25) of the left support tower column (7) and the right support tower column (8) supports and connects the upper water pipe (1), and both ends of the upper water pipe (1) are fixedly connected to the corresponding upper water pipe end supports (10); The lower layer pipe support system (26) of the left supporting tower column (7) and the right supporting tower column (8) supports and connects the lower layer water pipe (2), and both ends of the lower layer water pipe (2) are fixedly connected to corresponding lower layer water pipe fixed supports (11); The left cable system (5) is provided between the left ground anchor (3), the left supporting tower column (7) and the upper water pipe (1); the right cable system (6) is provided between the right ground anchor (4), the right supporting tower column (8) and the upper pipe (1); The upper water pipe (1) and the lower water pipe (2) are connected via the hanging cable system (9); the upper water pipe (1) is provided with the guy rope (32) at both ends, and the guy rope (32) is connected to the left ground anchor (3) or the right ground anchor (4) on the corresponding side.

2. A double-layer water-passing trestle structure across a deep foundation pit according to claim 1, characterized in that: The upper water pipe (1) is provided with a first connecting lug (12) and a second connecting lug (13); The left ground anchor (3) and the right ground anchor (4) are both provided with a fifth connecting lug (16) and a sixth connecting lug (17); the tops of the left supporting tower column (7) and the right supporting tower column (8) are both provided with a seventh connecting lug (27) and an eighth connecting lug (28); The left cable system (5) is provided between the fifth connecting lug (16) and the sixth connecting lug (17) and the corresponding seventh connecting lug (27), and between the eighth connecting lug (28) and the corresponding first connecting lug (12) and the second connecting lug (13); the right cable system (6) is provided between the fifth connecting lug (16) and the sixth connecting lug (17) and the corresponding eighth connecting lug (28), and between the seventh connecting lug (27) and the corresponding first connecting lug (12) and the second connecting lug (13).

3. A double-layer water-passing trestle structure across a deep foundation pit according to claim 2, characterized in that: The left cable system (5) and the right cable system (6) both comprise a shackle (18), a steel wire rope (19), a rope clamp (20), a first tensioning cable guide chain (21) and a second tensioning cable guide chain (31); The first connecting lifting lug (12) is connected to the corresponding steel wire rope (19) by a shackle (18); the second connecting lifting lug (13) is connected to the corresponding steel wire rope (19) by a shackle (18); The fifth connecting lifting lug (16) is connected to the corresponding steel wire rope (19) by a shackle (18); the sixth connecting lifting lug (17) is connected to the corresponding steel wire rope (19) by a shackle (18); The seventh connecting lifting lug (27) and the eighth connecting lifting lug (28) are respectively connected to the corresponding steel wire rope (9) by means of a shackle (18); The end of the steel wire rope (19) is provided with the rope clamp (20).

4. A double-layer water-passing trestle structure across a deep foundation pit according to claim 2, characterized in that: The first connecting lug (12) comprises two first special-shaped perforated steel plates (1201), two first annular steel plates (1202) and four first stiffening rib plates (1203); The first special-shaped perforated steel plate (1201) is fixedly connected to the upper water pipe (1), and the first special-shaped perforated steel plate (1201) is vertically fixedly connected to the first circular steel plate (1202); the first special-shaped perforated steel plate (1201) is fixedly provided with the first stiffening rib plate (1203), and the first stiffening rib plate (1203) is fixedly connected to the upper water pipe (1); The second connecting lug (13) comprises a second special-shaped perforated steel plate (1301), two second annular steel plates (1302) and four second stiffening rib plates (1303); The second special-shaped perforated steel plate (1301) is fixedly connected to the upper water pipe (1); the second special-shaped perforated steel plate (1301) is vertically fixedly connected to the second circular steel plate (1302); the second special-shaped perforated steel plate (1301) is fixedly provided with the second stiffening rib plate (1303); the second stiffening rib plate (1303) is fixedly connected to the upper water pipe (1).

5. A double-layer water-passing trestle structure across a deep foundation pit according to claim 2, characterized in that: The fifth connecting lug (16) and the sixth connecting lug (17) include a first connecting steel plate (1601), four first angle steels (1602), four second connecting steel plates (1603), two fourth special-shaped perforated steel plates (1604), two third circular steel plates (1605) and four fourth stiffening rib plates (1606); Two ends of the first angle steel (1602) are respectively fixedly connected to the first connecting steel plate (1601) and the corresponding second connecting steel plate (1603); The first connecting steel plate (1601) is fixedly connected to the fourth special-shaped perforated steel plate (1604); the fourth special-shaped perforated steel plate (1604) is vertically fixedly connected to the third circular ring steel plate (1605); the fourth stiffening rib plate (1606) is fixedly connected to both the first connecting steel plate (1601) and the fourth special-shaped perforated steel plate (1604).

6. A double-layer water-passing trestle structure across a deep foundation pit according to claim 2, characterized in that: The seventh connecting ear (27) and the eighth connecting ear (28) both include two fifth special-shaped perforated steel plates (2701) and two fourth circular steel plates (2702); the fifth special-shaped perforated steel plates (2701) are vertically fixedly connected to the fourth circular steel plates (2702), and the fifth special-shaped perforated steel plates (2701) are fixedly connected to the tops of the corresponding columns (22).

7. A double-layer water-passing trestle structure across a deep foundation pit according to any one of claims 1 to 6, characterized in that: The hanging rope system (9) comprises a left hanging rope (29) and a right hanging rope (30); the upper water pipe (1) is provided with a third connecting lug (14); the lower water pipe (2) is provided with a fourth connecting lug (15); the upper water pipe (1) is connected to the left hanging rope (29) and the right hanging rope (30) by means of the corresponding third connecting lug (14); the lower water pipe (2) is connected to the left hanging rope (29) and the right hanging rope (30) by means of the corresponding fourth connecting lug (15).

8. A double-layer water-passing trestle structure across a deep foundation pit according to claim 7, characterized in that: The third connecting lug (14) and the fourth connecting lug (15) include a third special-shaped perforated steel plate (1401) and four third stiffening ribs (1402); the third special-shaped perforated steel plate (1401) is fixedly connected to the corresponding water flow pipe; the third special-shaped perforated steel plate (1401) is fixedly provided with a third stiffening rib (1402), and the third stiffening rib (1402) is fixedly connected to the corresponding water flow pipe.

9. A double-layer water-passing trestle structure across a deep foundation pit according to any one of claims 1 to 6, wherein the upper pipeline support system (25) and the lower pipeline support system (26) both include a back-pressure beam structure (2501) and a support beam structure (2502) fixedly arranged between the two columns (22), the upper water-passing pipeline (1) or the lower water-passing pipeline (2) being assembled and connected between the support beam structure (2502) and the back-pressure beam structure (2501); rubber pads (2503) are arranged between the top supporting end of the support beam structure (2502) and the corresponding outer wall of the pipeline, and between the bottom back-pressure end of the back-pressure beam structure (2501) and the corresponding outer wall of the pipeline.

10. A construction method for a double-layer water-passing trestle structure across a deep foundation pit as claimed in any one of claims 1 to 9, characterized in that: The steps include: Step 1: Process the structural assembly parts in advance at the manufacturer according to the design drawings; Step 2: construct the left ground anchor (3) and the right ground anchor (4) at the construction site according to the design drawings; Step 3: construct the left supporting tower column (7) and the right supporting tower column (8), and complete the hoisting of the upper water pipe (1) and the lower water pipe (2); Step 4: construct the lower water pipe fixed support (11) according to the design drawings, and install the upper water pipe end supports (10) on the left and right sides; Step 5: Install the left cable system (5), the right cable system (6) and the hanging cable system (9).

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