CN115450246A - Tower crane foundation and basement raft combined structure and construction method thereof - Google Patents

Abstract

The invention discloses a combination structure of a tower crane foundation and a basement raft slab and a construction method thereof. The structure includes a basement cushion and a waterproof layer, a basement raft slab steel bar, a tower crane foundation steel bar, inserting bars, and tower crane pre-embedded bolts; wherein, the basement cushion The tower crane foundation and basement raft slab concrete poured as a whole are set above the waterproof layer, and the basement raft slab reinforcement and tower crane foundation reinforcement are arranged inside the concrete, and there are horizontal insertion bars at the position of the basement raft slab; the middle of the tower crane foundation reinforcement is uniformly arranged for the tower crane. Embedded bolts, the upper ends of the tower crane embedded bolts are placed outside the concrete. In this scheme, the construction process of combining tower crane foundation and raft slab is relatively simple, saving formwork and concrete materials. It effectively solves the problem of water accumulation in the foundation of the tower crane during the use of the tower crane, and avoids cleaning and pouring the basement raft at the foundation of the tower crane again.

Description

Combination structure of tower crane foundation and basement raft and its construction method

technical field

The invention belongs to the field of concrete structure construction, and in particular relates to a combination structure of a tower crane foundation and a basement raft and a construction method thereof.

Background technique

Tower crane is a commonly used vertical transportation tool on the construction site. During the construction of tower crane foundation, it is often encountered that the tower crane foundation and the basement foundation raft are in the same position. During the use of the tower crane, the foundation of the tower crane often accumulates water, which poses a safety hazard; the steel bars of the basement raft foundation are always exposed, which is easy to cause corrosion and poses a quality risk; and after the tower crane is dismantled, the basement raft needs to be cleaned and poured again, causing construction inconvenience .

The construction process of the prior art is relatively complicated, and the foundation formwork needs to be set, and the brick membrane or the formwork needs to be installed, which cannot effectively solve the problems of easy water accumulation during the use of the tower crane.

Contents of the invention

The technical problem to be solved by the present invention is to provide a combination structure of tower crane foundation and basement raft slab and its construction method, which solves the problem of tower crane foundation water accumulation in the prior art.

The present invention adopts the following technical solutions for solving the problems of the technologies described above:

A combination structure of tower crane foundation and basement raft, including basement cushion and waterproof layer, basement raft reinforcement, tower crane foundation reinforcement, insertion bars, and tower crane pre-embedded bolts; wherein, an integrally poured tower crane is arranged above the basement cushion and waterproof layer Foundation and basement raft concrete, inside the concrete are set basement raft steel bars and tower crane foundation steel bars, and horizontal bars are inserted at the position of the basement raft slab; in the middle of the tower crane foundation steel bars, the pre-embedded bolts required by the tower crane are evenly arranged, and the pre-embedded bolts of the tower crane The upper end rests on the exterior of the concrete.

Sleeves are provided at both ends of the ribs for the connection of adjacent unit structures.

Install waterproof steel plate at the position of construction joint.

When there is a column pier at the junction of the tower crane foundation and the raft, the tower crane foundation reinforcement and the column pier reinforcement are bound together as a whole.

The location of the upper reinforcement of the tower crane foundation is located on the lower side of the upper reinforcement of the basement raft.

The combined construction method of the tower crane foundation and the basement raft includes the following steps:

Step 1. Excavate to the design elevation of tower crane foundation and basement raft;

Step 2. Construct the basement cushion and waterproof layer according to the original design drawings of the basement;

Step 3. Binding the basement raft reinforcement and tower crane foundation reinforcement;

Step 4. Install the waterproof steel plate and the pre-embedded bolts of the tower crane foundation;

Step 5. Pour concrete for tower crane foundation and basement raft slab.

In step 1, the designed top elevation of the tower crane foundation is the same as the top elevation of the basement raft foundation, and excavation is carried out to the design elevation, and the masonry brick membrane structure is used at the position of the height difference.

The specific process of binding steel bars in step 3 is as follows:

Bind the basement raft reinforcement and the tower crane foundation reinforcement respectively according to the design drawings, and place the upper reinforcement of the tower crane foundation on the lower side of the basement raft reinforcement when binding;

When there is a column pier at the joint between the tower crane foundation and the raft slab, at least the steel bars within the scope of the tower crane foundation and the column pier should be bound; when there is no column pier at the joint between the tower crane foundation and the raft slab, at least the steel bars within the range of the tower crane foundation should be bound ;

Reserve the raft ribs in the basement, and install connectors at both ends of the ribs.

The connecting piece is a sleeve.

The specific process of step 4 is as follows:

Install a ring of water-stop steel plates at the position of the construction joint, and install vertical tower crane embedded bolts at the corresponding position in the middle of the tower crane foundation.

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

1. In this scheme, the construction process of combining tower crane foundation and raft slab is relatively simple, saving formwork and concrete materials.

2. Compared with the traditional construction method, it reduces the amount of concrete and formwork, and effectively solves the problem of water accumulation in the foundation of the tower crane during the use of the tower crane, avoiding cleaning and pouring the basement raft at the foundation of the tower crane again.

3. Avoid the long-term failure of the existing construction method to close the construction joints, the corrosion of steel bars and water-stop steel plates, and improve the quality of concrete construction and the safety of tower cranes during use.

Description of drawings

Fig. 1 is a schematic diagram of the pier structure at the junction of the raft and the tower crane foundation of the present invention.

Fig. 2 is a schematic diagram of the column-free pier structure at the junction of the raft and the tower crane foundation of the present invention.

Among them, the marks in the figure are: 1-basement cushion and waterproof layer; 2-basement raft reinforcement; 3-tower crane foundation reinforcement; 4-insertion bars; Buried bolts; 8-raft; 9-tower crane foundation; 10-column pier.

detailed description

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

A combination structure of tower crane foundation and basement raft, including basement cushion and waterproof layer, basement raft reinforcement, tower crane foundation reinforcement, insertion bars, and tower crane pre-embedded bolts; wherein, an integrally poured tower crane is arranged above the basement cushion and waterproof layer Foundation and basement raft concrete, inside the concrete are set basement raft steel bars and tower crane foundation steel bars, and horizontal bars are inserted at the position of the basement raft slab; in the middle of the tower crane foundation steel bars, the pre-embedded bolts required by the tower crane are evenly arranged, and the pre-embedded bolts of the tower crane The upper end rests on the exterior of the concrete.

Specific embodiment one, as shown in Fig. 1, Fig. 2,

A combination structure of a tower crane foundation and a basement raft, comprising a basement cushion and a waterproof layer 1, a basement raft steel bar 2, a tower crane foundation steel bar 3, inserting bars 4, and tower crane pre-embedded bolts 7; wherein, the basement cushion and waterproof layer 1 The overall poured tower crane foundation 9 and basement raft 8 concrete are set above the concrete, and the basement raft reinforcement 2 and tower crane foundation reinforcement 3 are arranged inside the concrete, and there is a horizontal insertion bar 4 at the position of the basement raft 8; the center of the tower crane foundation reinforcement 3 is uniform The embedded bolts 7 required by the tower crane are set, and the upper ends of the embedded bolts 7 of the tower crane are placed outside the concrete.

Sleeves 5 are provided at both ends of the ribs for the connection of adjacent unit structures.

Set the waterproof steel plate 6 at the position of the construction joint.

When there is a column pier 10 at the junction of the tower crane foundation 9 and the raft 8, the tower crane foundation reinforcement and the column pier reinforcement are bound together as a whole.

The location of the upper reinforcement of the tower crane foundation is located on the lower side of the upper reinforcement of the basement raft.

The construction method of the combined structure of tower crane foundation and basement raft slab in this scheme includes the following steps:

Step 1. Excavate to the design elevation of tower crane foundation and basement raft;

Step 2. Construct the basement cushion and waterproof layer according to the original design drawings of the basement;

Step 3. Binding the basement raft reinforcement and tower crane foundation reinforcement;

Step 4. Install the waterproof steel plate and the pre-embedded bolts of the tower crane foundation;

Step 5. Pour concrete for tower crane foundation and basement raft slab.

Specific embodiment two,

The construction method of the combination structure of the tower crane foundation and the basement raft slab includes the following steps:

Step 1. Excavate to the design elevation of the tower crane foundation and basement raft, and adopt masonry brick membrane structure or other measures at the height difference position; the elevation of the tower crane foundation top is the same as that of the basement raft top.

Step 2. According to the requirements of the original design drawings of the basement, construct the basement cushion and waterproof layer.

Step 3. Bind the basement raft steel bars and the tower crane foundation steel bars; respectively bind the basement raft steel bars and the tower crane foundation steel bars independently, and place the steel mesh on the upper layer of the tower crane foundation on the lower side of the upper layer steel bars on the basement raft board when binding; according to the basement raft boards to be bound range, reserve the inserting ribs; the specific process is as follows:

3.1. Bind the basement raft steel bars and the tower crane foundation steel bars respectively according to the design drawings. When binding, place the upper layer steel bars of the tower crane foundation on the lower side of the basement raft board upper layer steel bars;

3.2. When there is a column pier at the junction of the tower crane foundation and the raft slab, at least the steel bars within the scope of the tower crane foundation and the column pier shall be bound; when there is no column pier at the junction of the tower crane foundation and the raft slab, at least the Lashing completed;

3.3. According to the requirements of the specification, the basement raft inserts are reserved, and the connection between the unit structures is best to use a sleeve connection, and other connection methods can also be used.

Step 4. Install the water-stop steel plate and the pre-embedded bolts of the tower crane foundation; install a circle of water-stop steel plates at the position of the construction joint to play the role of water stop; install vertical tower crane pre-embedded bolts at the corresponding position in the middle of the tower crane foundation or according to the Installation plan to install other embedded parts.

Step 5. Pour the tower crane foundation and basement raft slab concrete that were constructed first, and pour the tower crane foundation and basement raft slab foundation concrete after the formwork is installed;

According to the construction progress, construct the basement rafts of other parts.

The application discloses a combination structure of basement raft and tower crane foundation and its construction method, which is characterized in that the raft and tower crane foundation are combined by using the construction method, which can reduce the amount of concrete and formwork while ensuring the construction quality, effectively Solve the problem of water accumulation in the foundation of the tower crane during the use of the tower crane, avoid cleaning and pouring the basement raft at the foundation of the tower crane again, solve the corrosion problem of the steel bars and water-stop steel plates at the construction joints, and can be popularized and applied nationwide, with good economic, safety and social benefits.

This method combines the basement raft with the tower crane foundation. Compared with the traditional construction method, it reduces the amount of concrete and formwork, and effectively solves the problem of water accumulation in the tower crane foundation during the use of the tower crane, avoiding cleaning and pouring the basement at the tower crane foundation again. The raft board can avoid the long-term unsealable construction joints of existing construction methods, and the corrosion of steel bars and water-stop steel plates, and improve the quality of concrete construction and the safety of tower cranes during use.

It should be noted that the terms "comprising" and "having" in the specification and claims of the present application and the above-mentioned drawings, as well as any variations thereof, are intended to cover non-exclusive inclusion, for example, including a series of steps or units A process, method, system, product or device is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to the process, method, product or device.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", The orientations or positional relationships indicated by "vertical", "horizontal", "horizontal", and "longitudinal" are based on the orientations or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

Moreover, some of the above terms may be used to indicate other meanings besides orientation or positional relationship, for example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. Those skilled in the art can understand the specific meanings of these terms in this application according to specific situations.

Furthermore, the terms "installed", "disposed", "provided", "connected", "connected", "socketed" are to be interpreted broadly. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary; internal connectivity. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

Claims (10)

1. A tower crane foundation and basement raft combined structure is characterized in that: comprise basement cushion and waterproof layer, basement raft reinforcement, tower crane foundation reinforcement, inserting bar, tower crane pre-embedded bolt; Wherein, basement cushion and waterproof layer The overall poured tower crane foundation and basement raft concrete are set on the top, and the basement raft reinforcement and tower crane foundation reinforcement are set inside the concrete, and there are horizontal insertion bars at the position of the basement raft; the middle of the tower crane foundation reinforcement is uniformly arranged with pre-embedded bolts required by the tower crane , the upper end of the embedded bolt of the tower crane is placed outside the concrete. 2. The combination structure of the tower crane foundation and the basement raft according to claim 1, characterized in that sleeves are provided at both ends of the insertion ribs for the connection of adjacent unit structures. 3. The combination structure of the tower crane foundation and the basement raft according to claim 1, characterized in that: a waterproof steel plate is installed at the position of the construction joint. 4. The combination structure of tower crane foundation and basement raft slab according to claim 1, characterized in that: when there is a column pier at the junction of the tower crane foundation and the raft slab, the tower crane foundation reinforcement and the column pier reinforcement are bound together as a whole. 5. The combination structure of tower crane foundation and basement raft according to claim 1, characterized in that: the position of the upper reinforcement of the tower crane foundation is located at the lower side of the upper reinforcement of the basement raft. 6. The combined construction method of tower crane foundation and basement raft slab, characterized in that it includes the following steps: Step 1. Excavate to the design elevation of tower crane foundation and basement raft; Step 2. Construct the basement cushion and waterproof layer according to the original design drawings of the basement; Step 3. Binding the basement raft reinforcement and tower crane foundation reinforcement; Step 4. Install the waterproof steel plate and the pre-embedded bolts of the tower crane foundation; Step 5. Pour concrete for tower crane foundation and basement raft slab. 7. The combined construction method of tower crane foundation and basement raft slab according to claim 6, characterized in that: in step 1, the designed top elevation of the tower crane foundation is the same as the top elevation of the basement raft slab foundation, and when the excavation reaches the design elevation, the height difference position The masonry brick membrane structure is adopted. 8. The combined construction method of tower crane foundation and basement raft slab according to claim 6, characterized in that: the specific process of binding steel bars in step 3 is as follows: Bind the basement raft steel bars and the tower crane foundation steel bars respectively according to the design drawings, and place the upper steel bars of the tower crane foundation on the lower side of the upper layer steel bars of the basement raft board when binding; When there is a column pier at the joint between the tower crane foundation and the raft slab, at least the steel bars within the scope of the tower crane foundation and the column pier should be bound; when there is no column pier at the joint between the tower crane foundation and the raft slab, at least the steel bars within the range of the tower crane foundation should be bound ; Reserve the raft ribs in the basement, and install connectors at both ends of the ribs. 9. The construction method for combining tower crane foundation and basement raft according to claim 8, characterized in that: the connecting piece is a sleeve. 10. The combined construction method of tower crane foundation and basement raft according to claim 6, characterized in that: the specific process of step 4 is as follows: Install a ring of water-stop steel plates at the position of the construction joint, and install vertical tower crane embedded bolts at the corresponding position in the middle of the tower crane foundation.

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