Reinforcing structure for improving bearing capacity of long-piled wharf based on additionally arranged structural keys

Abstract

The utility model relates to a reinforcing structure for improving the bearing capacity of a long-piled wharf based on additional arrangement of structural keys, which comprises a long-piled wharf component body, a pile platform, a pile foundation and a structural section, and the reinforcing structure comprises pile foundation reinforcing structural keys, structural section reinforcing structural keys and panel reinforcing structural keys; at least one of the pile foundation reinforcing structural key, the structural section reinforcing structural key and the panel reinforcing structural key is arranged on the high-pile wharf component body as a reinforcing feature; structural keys are additionally arranged in damaged components, new and old structures are connected to jointly play a bearing function, stress is clear, construction is convenient, the construction period is short, cost is low, and influence on production is small.

Description

Technical Field

[0001] The utility model relates to a reinforcement structure for improving the bearing capacity of a high-pile dock based on adding a structural key, and relates to the technical field of the bearing capacity of a pile foundation of a port engineering. Background Art

[0002] A high-pile wharf is composed of pile platforms or caps, pile foundations, shore-connected structures, and wharf equipment. The superstructure constitutes the wharf surface and is connected to the pile foundation as a whole. Therefore, it directly bears the vertical and horizontal loads acting on the wharf surface and transfers them to the pile foundation. The pile foundation is used to support the superstructure and transfer the loads of the superstructure and the wharf surface to the deep ground. Therefore, for a high-pile wharf, its bearing capacity is mainly reflected in the pile platform and pile foundation.

[0003] In recent years, many high-pile docks have entered the stage of upgrading and reconstruction. In order to improve the operation efficiency of the dock, high-power loading and unloading process equipment has been replaced. This will increase the use load of the dock structure, and the bearing capacity of the original structure cannot meet the use requirements after the reconstruction. The current common method is to dismantle and rebuild the components of the high-pile dock to improve the bearing capacity of the high-pile dock structure, which leads to increased construction difficulty and a significant increase in construction costs. Therefore, it is necessary to design a new reconstruction technology to achieve the purpose of clear force, easy construction, short construction period, low cost and small production impact. Utility Model Content

[0004] The utility model provides a reinforcement structure based on adding structural keys to improve the bearing capacity of a high-pile wharf. By adding structural keys in damaged components, new and old structures are connected to jointly perform the bearing function. The force is clear, the construction is convenient, the construction period is short, the cost is low, and the impact on production is small.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A reinforcement structure for improving the bearing capacity of a high-pile wharf based on adding structural keys, comprising a high-pile wharf component body, which comprises a pile platform, a pile foundation and a structural segment, wherein the reinforcement structure comprises a pile foundation reinforcement structural key, a structural segment reinforcement structural key and a panel reinforcement structural key; at least one of the pile foundation reinforcement structural key, the structural segment reinforcement structural key and the panel reinforcement structural key is arranged on the high-pile wharf component body as a reinforcement feature;

[0007] The pile foundation reinforcement structure key comprises a plurality of keys, all of which are installed between adjacent pile foundations, and the top of the pile foundation reinforcement structure key is embedded and connected with the bottom of the pile platform;

[0008] The structural segment reinforcement structural keys include a plurality of structural segments installed between adjacent structural segments;

[0009] The panel reinforcement structure keys include a number of keys which are embedded in the pile platform;

[0010] As a further preferred embodiment of the present invention, the pile foundation reinforcement structure key is a columnar structure, arranged at the junction between adjacent pile foundations, and the top of the pile foundation reinforcement structure key is embedded and connected with the pile platform;

[0011] As a further preferred embodiment of the present invention, the structural section of the high-pile wharf component body includes a plurality of racks, and structural section reinforcement key is arranged between adjacent racks; the structural section reinforcement key is a plate-shaped block structure;

[0012] As a further preferred embodiment of the present invention, the panel reinforcement structure key is a cast reinforced concrete structure, slots are chiseled at the pile platform to be reinforced, interface bonding material is brushed into the slots, a number of stirrups are inserted into the slots, and concrete is cast with steel bars to form a panel reinforcement structure key.

[0013] Through the above technical solution, compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The reinforcement structure provided by the utility model is based on a new technology for reconstructing the bearing capacity of the wharf by adding structural keys. It is conceived to achieve the purpose of reconstructing the bearing capacity of the structure by adding structural keys that connect the new and old structures to jointly play the bearing function;

[0015] 2. The reinforcement structure provided by the utility model sets different reinforcement structure keys at different positions in the structure, which innovatively improves the bearing capacity of the dock platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural schematic diagram of a pile foundation reinforcement structure key in a preferred embodiment provided by the utility model;

[0018] Figure 2 It is a schematic diagram comparing the bearing capacity of pile foundation after adding pile foundation reinforcement structure keys in the preferred embodiment provided by the utility model;

[0019] Figure 3 It is a structural schematic diagram of a structural segment reinforcement structural key in a preferred embodiment provided by the utility model;

[0020] Figure 4 It is a structural diagram of a panel reinforcement structure key in a preferred embodiment provided by the utility model;

[0021] In the figure: 1 is the pile foundation reinforcement structure key, 2 is the structure segment reinforcement structure key, 3 is the panel reinforcement structure key, and 4 is the rack. DETAILED DESCRIPTION

[0022] The utility model is now further described in detail in conjunction with the accompanying drawings. In the description of this application, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution by example, and do not limit the scope of protection of the utility model.

[0023] The reinforcement structure provided by this application breaks the current situation of improving the bearing capacity of the high-pile wharf structure by dismantling and rebuilding components, and proposes a structural key reconstruction technology, which connects the new and old structures to jointly play the bearing function by adding structural keys in the structure. The added structural keys can share the pressure of the components and expand the force-bearing section to improve the bearing capacity of the high-pile wharf.

[0024] Specifically, the reinforcement structure provided in the present application for improving the bearing capacity of a high-pile wharf based on adding structural keys includes a high-pile wharf component body, which includes a pile platform, a pile foundation and a structural segment, and the reinforcement structure includes a pile foundation reinforcement structure key 1, a structural segment reinforcement structure key 2 and a panel reinforcement structure key 3; it should be emphasized here that at least one of the pile foundation reinforcement structure key, the structural segment reinforcement structure key and the panel reinforcement structure key is arranged on the high-pile wharf component body as a reinforcement feature, and needs to be installed according to actual structural modification requirements.

[0025] The pile foundation reinforcement structure key includes several keys, all of which are installed between adjacent pile foundations. The top of the pile foundation reinforcement structure key is embedded and connected with the bottom of the pile platform; Figure 1 The pile foundation reinforcement key is a columnar structure, set at the junction between adjacent pile foundations, and the top of the pile foundation reinforcement key is against the bottom of the pile platform. The pile foundation reinforcement key is a longitudinal load-sharing structure key that can simultaneously increase the vertical and horizontal bearing capacity of the high-pile wharf.

[0026] Regarding the pile foundation reinforcement structure key, the preferred embodiment provided by this application is the 1# and 2# docks at the front of the high-pile dock. Figure 2 As shown in the figure, when the pile foundation reinforcement structure key is not added, the compressive capacity of the pile foundation cannot be met, and the axial pressure of the single pile is higher than the design value of the bearing capacity. After the pile foundation reinforcement structure key is added between adjacent pile foundations, the pile force is significantly reduced to below the design value of the single pile bearing capacity.

[0027] The structural segment reinforcement structure key provided in the present application connects different structural segments and enhances the overall stability. Since the high-pile wharf component body includes a plurality of racks 4, Figure 3As shown, a structural segment reinforcement key is arranged between adjacent racks, and the structural segment reinforcement key is a plate-shaped block structure. The horizontal force distribution coefficient of a single rack is reduced. After testing, it is found that the distribution coefficient of the stressed rack is reduced from 0.42 to below 0.32 after the structural segment reinforcement key is connected. That is, the horizontal force distribution coefficient of the side rack is reduced by about 50% through this reinforcement measure, and the horizontal force of the stressed rack can be reduced by more than 10%.

[0028] Next, we will discuss the panel reinforcement structure key, which is based on the principle of increasing the cross-section method to increase the shear and bending resistance of the pile platform panel section. The panel reinforcement structure key is a cast reinforced concrete structure, which is a newly developed orthogonal reinforced rib reinforced hollow slab. During implementation, the panel concrete part of the high-pile dock is chiseled out (no more than 50mm) to form a slot, and the surface is rinsed clean and coated with interface bonding material. A number of stirrups are inserted into the slot, and after the reinforcement is planted, the steel bars are tied under the panel, and the bidirectional reinforced ribs are integrally connected to the hollow slab. The new and old structures are combined to bear the force. Figure 4 As shown, fine stone concrete is poured to the designed elevation before the interface bonding material is solidified, and the shear resistance of the panel section is increased by increasing the panel thickness, which innovatively improves the bearing capacity of the high-pile wharf platform.

[0029] Taking the 5# and 8# terminals as examples in the embodiments, the load-bearing capacity verification results of the panels after reinforcement in Table 1 and the shear force calculation results of the panels after reinforcement in Table 2 show that the reinforced panels meet the load-bearing capacity requirements. Of course, it should be noted that since the berth dock elevations of the 5# and 8# terminals have been raised, a slope is required when connecting with adjacent berths.

[0030] Table 1 Bearing capacity review results after panel reinforcement

[0031]

[0032]

[0033] Table 2 Shear force calculation results after panel reinforcement

[0034]

[0035] In summary, this application proposes a reinforcement method of cast-in-place piles with longitudinal load-sharing structural keys, designs a reinforcement method for connecting structural blocks between structural segments, and develops a technology for reinforcing hollow slabs with orthogonal reinforced ribs, all of which are new technologies for reconstructing the bearing capacity of docks based on adding structural keys. The idea of ​​reconstructing the bearing capacity of the structure by adding structural keys that connect the new and old structures to jointly play the bearing function is conceived, breaking the current situation of improving the bearing capacity of the high-pile dock structure based on the demolition and reconstruction of components. The new and old structures are combined to bear the force, and the bearing capacity of the high-pile dock platform is innovatively improved.

[0036] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0037] The meaning of "and / or" described in this application means that the situations where each exists alone or both exist at the same time are included.

[0038] The term “connection” as used in this application may mean a direct connection between components or an indirect connection between components via other components.

[0039] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A reinforcement structure for improving the bearing capacity of a high-pile wharf based on adding structural keys, comprising a high-pile wharf component body, which includes a pile platform, a pile foundation and a structural segment, characterized in that: The reinforcement structure comprises a pile foundation reinforcement structure key (1), a structure segment reinforcement structure key (2) and a panel reinforcement structure key (3); at least one of the pile foundation reinforcement structure key (1), the structure segment reinforcement structure key (2) and the panel reinforcement structure key (3) is arranged on the high-pile wharf component body as a reinforcement feature; The pile foundation reinforcement structure key (1) comprises a plurality of keys, each of which is installed between adjacent pile foundations, and the top of the pile foundation reinforcement structure key (1) abuts against the bottom of the pile platform; the pile foundation reinforcement structure key (1) is a columnar structure, and is arranged at the junction between adjacent pile foundations, and the top of the pile foundation reinforcement structure key (1) abuts against the bottom surface of the pile platform; The structural section of the high-pile wharf component body comprises a plurality of bent frames (4), and structural section reinforcement structure keys (2) are arranged between adjacent bent frames (4); the structural section reinforcement structure keys (2) comprise a plurality of structure keys, which are installed between adjacent structural sections; the structural section reinforcement structure keys (2) are plate-shaped block structures; The panel reinforcement structure key (3) comprises a plurality of keys, which are embedded in the pile platform; the panel reinforcement structure key (3) is a cast reinforced concrete structure, a slot is chiseled at the position of the pile platform to be reinforced, an interface bonding material is brushed into the slot, a plurality of stirrups are inserted into the slot, and concrete is cast with steel bars to form the panel reinforcement structure key (3).

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