CN-224227841-U - Tower crane foundation construction joint waterproof construction

CN224227841UCN 224227841 UCN224227841 UCN 224227841UCN-224227841-U

Abstract

The utility model discloses a waterproof structure for a construction joint of a tower crane foundation, which comprises a main structure raft reinforcing steel bar, a column lower pier, fine stone concrete, geotextile, an SBS waterproof layer, a concrete cushion layer, a tower crane foundation, a shallow column lower pier, an upper row of dowel bars, a lower tower crane lower row of dowel bars, a tower crane upper row of dowel bars, a grouting pipe and a water stop steel plate, wherein the main structure raft reinforcing steel bar is precast into the tower crane foundation, the column lower pier is a column lower protruding concrete body of a permanent raft foundation structure, the tower crane foundation and the raft structure are combined to form a concrete bottom plate, the grouting pipe is positioned in the tower crane foundation, the grouting pipe is buried along the periphery of the tower crane, the middle of each side is led out of the top surface of the foundation, and the water stop steel plate is positioned in the tower crane foundation and at the top of the grouting pipe. According to the utility model, the water-stopping steel plate and the grouting pipe are arranged in the first-stage concrete, so that a dual waterproof system is formed, the installation is convenient, the waterproof assurance is strong, and the slurry injection plugging effect is good after the second-stage concrete pouring is finished.

Inventors

TAO YILUO
CHEN YIMIN
DAI ZHIBO
Ding Haicao
FENG WENKE
WANG LIN
WANG JIPING
YU HANG
ZHONG ZHICHAO
HOU BO
FAN ZHONGBO
LONG ZUYUN
ZHOU YUHANG

Assignees

中交三公局华中建设有限责任公司

Dates

Publication Date: 20260512
Application Date: 20250603

Claims (7)

1. The utility model provides a tower crane foundation construction joint waterproof construction which characterized in that includes: the main body structure raft steel bar (1), the post lower pier (2), fine stone concrete (3), geotechnical cloth (4), an SBS waterproof layer (5), a waterproof layer (6), a concrete cushion layer (7), a tower crane foundation (8), a shallow column lower pier (9), an upper row of dowel bars (10), a lower row of dowel bars (11), a tower crane lower row bar (12), a tower crane upper row bar (13), a post lower pier lower row of dowel bars (15), grouting pipes (16) and a water stop steel plate (17), the main body structure raft steel bar (1) is pre-poured into a tower crane foundation (8), the post lower pier (2) is a post lower protruding concrete body of a permanent raft foundation structure, the tower crane foundation (8) is combined with a raft structure to serve as a concrete bottom plate, the shallow column lower pier (9) is positioned at the post lower pier thickness of different raft structures, the tower crane lower row bar (12) is positioned at the lower part main body of the tower crane foundation (8) according to the set depth differently by stress, the tower crane upper row bar (13) is positioned at the main body of the main tower crane foundation (8), the grouting pipes (16) are positioned at the periphery of the main body, the peripheral edge of the grouting pipe is sealed by adopting the grouting pipe, the sealing-up foundation is completed, the sealing-up seam is completed by adopting the sealing-up pipe grouting pipe (16, the water stop steel plate (17) is positioned in the tower crane foundation (8) and at the top of the grouting pipe (16), is anchored in the first-stage concrete in a pre-buried mode, and is reserved in the second-stage concrete pouring mode in the other half.
2. The waterproof structure for the construction joints of the tower crane foundation according to claim 1, wherein the raft steel bars (1) of the main body structure are phi 14 steel bars, the longitudinal and transverse spacing is designed according to stress, the anchoring length is not less than la, and the positions are fixed according to the designed spacing.
3. The tower crane foundation construction joint waterproof structure according to claim 1, wherein the tower crane foundation (8) adopts different steel bar diameters and different distances according to different tower crane models, and the thickness of the tower crane foundation (8) is 1200-1500mm.
4. The tower crane foundation construction joint waterproof structure of claim 1, wherein the concrete cushion layer (7) is positioned at the top of a foundation soil body and used for leveling and paving raft column lower pier steel bars and tower crane foundation steel bars, the concrete cushion layer (7) is provided with a waterproof layer (6) in a hot-melt mode, the top of the waterproof layer (6) is provided with an SBS waterproof layer (5) in a hot-melt mode, the SBS waterproof layer (5) is provided with geotechnical cloth (4) in a paving mode, and the unit mass of the geotechnical cloth (4) is 200g/m < 2 >.
5. The waterproof construction joint structure of the tower crane foundation is characterized in that the upper row of dowel bars (10) are located on the upper portion of the lower column pier structure and inserted into the steel bars of the first-stage tower crane foundation (8), the embedded anchoring length is bound into the second-stage steel bars when the second-stage concrete is poured, the lower row of dowel bars (11) are located on the lower portion of the lower column pier structure and inserted into the steel bars of the first-stage tower crane foundation (8), and the embedded anchoring length is bound into the second-stage steel bars when the second-stage concrete is poured.
6. The waterproof structure for the construction joints of the tower crane foundation is characterized in that the lower row of dowel bars (15) of the lower pier of the column is positioned at the lower part of the lower pier (9) of the shallow column, the steel bars of the first-stage tower crane foundation (8) are inserted, and the embedded anchoring length is bound into the second-stage steel bars when the second-stage concrete is poured.
7. The tower crane foundation construction joint waterproof structure of claim 1, wherein embedded bolts (14) are arranged in the middle of the interior of the tower crane foundation (8) and used for fixing the embedded bolts of the tower crane upright post.

Description

Tower crane foundation construction joint waterproof construction Technical Field The utility model relates to the technical field of tower crane foundation construction joint waterproof structures, in particular to a tower crane foundation construction joint waterproof structure. Background In house construction engineering, tower cranes are widely used, and tower crane foundations are important structures of the tower cranes. Along with the continuous increase of building height, foundation pit depth also deepens, and groundwater pressure becomes large, and water leakage phenomenon often occurs at joints of tower crane foundations in the form of concrete bearing platforms and surrounding raft structure concrete. Because the embedded bars of the foundation part are more, the conventional water stop steel plate is influenced by the installation positions of the bars and the templates, the peripheral water stop effect of the foundation concrete is poor, the maintenance cost is high, and the treatment is difficult. Chinese patent with patent publication number CN219862984U discloses a waterproof construction joint structure for tower crane foundation. The construction joint comprises a construction joint arranged between a tower crane foundation layer and a post-pouring foundation layer, wherein the tower crane foundation layer comprises an excavated foundation pit, a cushion layer is paved at the top of an inner cavity of the foundation pit, a waterproof layer is arranged at the top of the cushion layer, and a pre-pouring concrete layer is poured at the top of the waterproof layer. According to the utility model, through the matched use of the waterproof layer and the waterproof coiled material, the water seepage from the bottoms of the foundation pit and the post-pouring foundation layer is avoided, the construction joint is subjected to the primary water stopping effect through the arrangement of the water stopping steel plate, the construction joint is further subjected to the waterproof effect through the matched use of the construction groove, the self-healing agent, the water swelling water stopping strip and the self-healing cement, and the waterproof effect on the construction joint is enhanced through the matched use of the waterproof coating I and the waterproof coating II, so that the waterproof effect on the construction joint is enhanced, and the aim of effectively waterproof the tower crane foundation construction joint can be achieved. The existing waterproof structure for the construction joint of the tower crane foundation has the problems of poor waterproof and plugging effects of the water leakage belt, difficult post-treatment, high cost, difficult radical cure and the like. In order to overcome the disadvantages, the utility model provides a waterproof structure for a construction joint of a tower crane foundation. Disclosure of utility model The utility model aims to solve the defects in the prior art, and provides a waterproof structure for a construction joint of a tower crane foundation. The waterproof construction joint structure for the tower crane foundation comprises main structure raft steel bars, column bottom piers, fine stone concrete, geotextiles, SBS waterproof layers, concrete cushion layers, a tower crane foundation, shallow column bottom piers, upper row dowel bars, lower row crane row bars, upper row crane row bars, lower column bottom piers row dowel bars, grouting pipes and water stop steel plates, wherein the main structure raft steel bars are pre-poured into the tower crane foundation, the column bottom piers are protruding concrete bodies below the columns of the permanent raft foundation structure, concrete is poured in the second period, the tower crane foundation and the raft structure are combined to form a concrete bottom plate, the shallow column bottom piers are located in the thicknesses of the column bottom piers of different raft structures, the depth is set according to the stress difference, the lower column bottom row bars are located in the main steel bars of the tower crane foundation, the upper row bars are located in the upper portion of the tower crane foundation, the grouting pipes are located in the tower crane foundation, the grouting pipes are located along the middle of the tower crane foundation, the grouting pipes are placed in the top surface of the temporary grouting pipe, the two period are placed in the pile foundation, the two period of the sealing pipe foundation is reserved, the sealing joint is completed by adopting the grouting pipe, the grouting pipe is reserved in the first period, and the sealing pipe is reserved in the sealing joint is reserved for sealing the sealing joint, the sealing joint is reserved in the sealing joint, and the sealing is reserved in the sealing joint sealing is reserved in the sealing pipe. Furthermore, the raft steel bars of the main structure are phi 14 steel bars, the longitudinal and transverse spaci