A clinker storage and its arrangement method

Abstract

The invention discloses a clinker silo and a layout method thereof. Bending prestressed tendons are arranged at the edge of a door opening, and lintels and buttresses are arranged around the door opening, so as to effectively avoid stress concentration at the door opening due to over-dense anchoring of prestressed tendons. By arranging plum blossom-shaped prestressed tendons below a silo wall ring beam, it is possible to avoid excessive local pressure in a silo wall section due to over-dense distribution of prestressed tendons, while ensuring that the prestress meets design requirements. The strength weakening of the silo wall caused by opening a hole is effectively reduced, the strength and rigidity of the structure are ensured, the stress concentration phenomenon near the hole opening is alleviated, and the safety and reliability of the structure are improved.

Description

Technical Field

[0001] The invention relates to a clinker silo, and in particular to a clinker silo and a layout method thereof. Background Art

[0002] As a special structure for storing bulk, granular and liquid materials, clinker silos are widely used in coal, cement clinker, mining, chemical industry, grain, feed and other industrial and agricultural fields around the world. In the design and use of clinker silos, in order to meet the needs of storage technology and various conveying equipment under the silo, a large hole must be opened in the cylinder wall. In general projects, in order to avoid damage near the hole due to stress concentration, additional steel mesh is often installed near the hole. However, with the rapid development of construction science and technology, the development of the building materials industry has also advanced by leaps and bounds, and the scale and output of cement plants have continued to expand. Nowadays, the diameter of clinker silos has reached about 100 meters. At this time, the radial pressure of the stored materials is already very huge. In order to meet the strength and stiffness requirements of the silo wall and avoid damage at the door opening due to stress concentration, a large number of steel bars need to be configured in the silo wall, and a large number of additional steel bars should also be installed at the door opening, which leads to a significant increase in construction difficulty, engineering volume and construction cost. Nowadays, the application of prestressed technology in the engineering field has become very mature. The addition of prestressed tendons can delay the cracking of concrete components and improve the crack resistance and rigidity of components. Therefore, as one of the important buildings of cement plants, clinker silos, especially clinker silos with large diameters and heights, are built with a large amount of prestressed concrete. However, how to effectively and economically arrange prestressed tendons at the silo wall and door openings, and how to effectively deal with the stress concentration phenomenon at the door openings, are issues that engineering technicians must solve. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a clinker silo, which solves the problem of weakening of the silo wall due to opening holes and relieves the stress concentration near the holes.

[0004] Technical solution: A clinker silo described in the present invention comprises a silo wall, a ring beam is arranged below the silo wall, a door hole is opened on the silo wall, the door hole is located on the upper part of the ring beam, buttresses are arranged on the silo walls on both sides of the door hole, a lintel is arranged on the silo wall above the door hole, and the buttresses are fixedly connected to the lintel and the ring beam respectively; a plurality of tensioned wall columns are arranged at intervals along the vertical direction on the ring beam of the silo wall, prestressed tendon anchor holes are reserved in the vertical direction at the tensioned wall columns, the lintel and the buttresses, and anchoring is achieved by prestressed tendons between the ring beam and the tensioned wall column, between the lintel and the tensioned wall column, between the buttresses and the tensioned wall column, and between the tensioned wall columns.

[0005] By adopting the above technical solution, the ring beam, lintel, buttress columns and tension wall columns are formed into a whole through prestressed tendons. Therefore, the stress generated at the door opening is transmitted to several tension wall columns and the warehouse wall through the prestressed tendons, avoiding the strength weakening of the warehouse wall caused by the opening, ensuring the strength and rigidity of the structure, alleviating the stress concentration phenomenon near the opening, and improving the safety and reliability of the structure.

[0006] Furthermore, after being bent at the upper and lower edges of the door opening, the prestressed tendons are arranged in parallel with the prestressed tendons at the lintel and the ring beam, and are anchored at the tensioning wall columns.

[0007] Furthermore, additional prestressed tendons are symmetrically arranged inside and outside the lintel and anchored at both ends of the lintel.

[0008] Furthermore, spiral reinforcements are respectively arranged at both ends of the prestressed tendons, the spiral reinforcements are sleeved on the outside of the prestressed tendons, and are fixedly connected to the end anchor plates of the fixed end anchor or the tensioning end anchor.

[0009] Furthermore, prestressed tendons are arranged below the ring beam of the warehouse wall. The prestressed tendons are arranged in a plum blossom shape along the elevation of the warehouse wall and anchored to the tension wall columns.

[0010] Purpose of the invention: The purpose of the present invention is to provide a method for arranging a clinker silo, which solves the problem of weakening the strength of the silo wall due to openings and alleviates the problem of stress concentration near the openings.

[0011] Technical solution: A method for arranging a clinker warehouse according to the present invention comprises the following steps:

[0012] Step 1: Determine the cross-sectional dimensions of the warehouse wall, tensioned pilasters and ring beams;

[0013] Step 2: Determine the specific dimensions and elevations of the door opening, buttresses and lintels;

[0014] Step 3: Determine the model, length and number of prestressed tendons and additional prestressed tendons, and cut them;

[0015] Step 4: According to the specific size and elevation of the door opening, buttresses and lintels, combined with step 3, determine the specific size of the prestressed tendons at the upper and lower edges of the door opening and cut them;

[0016] Step 5: Arrange the steel skeleton of the warehouse wall, tensioned pilasters, ring beams, door openings, buttresses and lintels around the door openings;

[0017] Step 6: First fix the fixed end anchor and the tension end anchor in the internal steel skeleton of the tension wall column, and then arrange the cut prestressed tendons in a fixed position;

[0018] Step 7: Install the template of the warehouse wall below the bottom of the door opening;

[0019] Step 8: pouring concrete for the silo wall, vibrating and curing;

[0020] Step 9: After the concrete strength of the warehouse wall reaches the required level, fix the fixed end anchors and the tension end anchors to the steel skeletons of the buttresses, tensioned pilasters and both ends of the lintel on both sides of the door opening, and arrange the cut prestressed tendons in fixed positions;

[0021] Step 10: Install the warehouse wall template within the door opening elevation range;

[0022] Step 11: pouring concrete for the silo wall, vibrating and curing;

[0023] Step 12: The prestressed tendons are tensioned after the concrete reaches 100% of the design strength. The tensioning sequence is from bottom to top, in sections and rings. The prestressed tendons are tensioned one by one, step by step, until the tensioning of the entire tendon bundle is completed. After the prestressing is completed and passed the inspection, one end is anchored first and then the other end.

[0024] Step 13: After the tensioning is completed, the reserved holes in the wall columns, the buttresses on both sides of the door opening, and the ends of the lintel will be filled with C40 fine stone concrete.

[0025] Beneficial effects: Compared with the prior art, the present invention provides bent prestressed tendons at the edge of the door opening, and lintels and buttresses around the door opening, which effectively avoids stress concentration at the door opening due to too dense anchoring of the prestressed tendons; by arranging plum blossom-shaped prestressed tendons below the ring beam of the warehouse wall, it can avoid excessive local pressure in the warehouse wall section due to too dense distribution of prestressed tendons while ensuring that the prestress meets the design requirements; it effectively reduces the strength weakening of the warehouse wall caused by the opening, ensures the strength and rigidity of the structure, alleviates the stress concentration phenomenon near the opening, and improves the structural safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural cross-sectional view of the tensioned wall column of the present invention;

[0027] Figure 2 It is a cross-sectional view of the storage wall structure of the present invention;

[0028] Figure 3 It is a plan layout diagram of prestressed tendons within the elevation range of the ring beam of the present invention;

[0029] Figure 4 It is a plan layout diagram of prestressed tendons within the elevation range of the door opening of the present invention;

[0030] Figure 5 This is a vertical layout diagram of the prestressed tendons of a door opening of the present invention;

[0031] Figure 6 This is a diagram of anchoring prestressed tendons at the upper lintel of a door opening of the present invention;

[0032] Figure 7 This is a diagram of anchoring prestressed tendons at buttresses on both sides of a door opening according to the present invention;

[0033] Figure 8 This is the anchorage diagram of the prestressed tendons of the silo wall of the present invention;

[0034] Fig. 9 This is the anchorage diagram of the prestressed tendons of the ring beam of the silo wall of the present invention;

[0035] Fig.10 is a cross-sectional view of a door opening of the present invention;

[0036] Fig.11 It is a cross-sectional view of buttresses on both sides of a door opening of the present invention. DETAILED DESCRIPTION

[0037] like Figure 1-5 As shown, a clinker warehouse comprises a warehouse wall 4, a ring beam 1 is arranged below the warehouse wall 4, a door hole 5 is opened on the warehouse wall 4, the door hole 5 is located on the upper part of the ring beam 1, buttresses 6 are arranged on the warehouse wall 4 on both sides of the door hole 5, and a lintel 7 is arranged on the warehouse wall 4 above the door hole 5, and the buttresses 6 are fixedly connected with the lintel 7 and the ring beam 1 respectively; a plurality of tensioning wall columns 2 are arranged on the warehouse wall 4 at intervals along the vertical direction on the ring beam 1, and holes for anchors 10 of prestressed tendons 3 are reserved at the tensioning wall columns 2, the lintel 7 and the buttresses 6 along the vertical direction, and anchoring is achieved by prestressed tendons 3 between the ring beam 1 and the tensioning wall columns 2, between the lintel 7 and the tensioning wall columns 2, between the buttresses 6 and the tensioning wall columns 2, and between the tensioning wall columns 2.

[0038] The ring beam 1, the lintel 7, the buttress columns 6 and the tension wall columns 2 form a whole through the prestressed tendons 3. Therefore, the stress generated at the door opening 5 is transmitted to several tension wall columns and the warehouse wall 4 through the prestressed tendons 3, avoiding the strength weakening of the warehouse wall 4 caused by the opening, ensuring the strength and rigidity of the structure, alleviating the stress concentration phenomenon near the opening, and improving the safety and reliability of the structure.

[0039] refer to Figure 5 After being bent at the upper and lower edges of the door opening 5, the prestressed tendons 3 are arranged parallel to the prestressed tendons 3 at the lintel 7 and the ring beam 1, and are anchored at the tensioning wall column 2.

[0040] Additional prestressed tendons 3 are symmetrically arranged inside and outside the lintel 7 and anchored at both ends of the lintel 7 .

[0041] like Figure 6-11 As shown, spiral tendons are respectively arranged at both ends of the prestressed tendon 3 , which are sleeved on the outside of the prestressed tendon 3 and fixedly connected to the end anchor plates of the fixed end anchor 10 or the tensioning end anchor 10 .

[0042] like Figure 2-5As shown, prestressed tendons 3 are arranged below the ring beam 1 of the warehouse wall 4 . The prestressed tendons 3 are arranged in a plum blossom shape along the elevation of the warehouse wall 4 and are anchored to the tension wall columns 2 .

[0043] In combination with the above structure, the clinker storage is arranged, and the arrangement method includes the following steps:

[0044] Step 1: Determine the cross-sectional dimensions of the warehouse wall 4, the tension wall column 2 and the ring beam 1;

[0045] Step 2: Determine the specific size and elevation of the door opening 5, buttress 6 and lintel 7;

[0046] Step 3: Determine the model, length and number of the prestressed tendons 3 and the additional prestressed tendons 3, and cut them;

[0047] Step 4: According to the specific dimensions and elevations of the door opening 5, buttresses 6 and lintels 7, the specific dimensions of the prestressed tendons 3 at the upper and lower edges of the door opening 5 are determined in combination with step 3, and the prestressed tendons 3 are cut;

[0048] Step 5: Arrange the steel skeleton of the warehouse wall 4, the tensioned pilasters 2, the ring beam 1, the door opening 5, and the buttresses 6 and the lintel 7 around the door opening 5;

[0049] Step 6: first fix the fixed end anchor 10 and the tension end anchor 10 in the internal steel skeleton of the tension wall column 2, and then arrange the cut prestressed tendons 3 in a fixed position;

[0050] Step 7: Install the template of the warehouse wall 4 below the bottom of the door opening 5;

[0051] Step 8: pouring concrete for the silo wall 4, vibrating and curing;

[0052] Step 9: After the concrete strength of the warehouse wall 4 reaches the required level, the fixed end anchor 10 and the tension end anchor 10 are fixed to the steel skeletons of the buttresses 6 on both sides of the door opening 5, the tension wall columns 2 and the two ends of the lintel 7, and the cut prestressed tendons 3 are arranged in fixed positions;

[0053] Step 10: Install the template of the warehouse wall 4 within the elevation range of the door opening 5;

[0054] Step 11: pouring concrete for the silo wall 4, vibrating and curing;

[0055] Step 12: The prestressed tendons 3 are tensioned after the concrete reaches 100% of the design strength. The tensioning sequence is to tension the tendons one by one in sections from bottom to top, and the 3 prestressed tendons are tensioned one by one step by step until the tensioning of the entire bundle is completed. After the prestressing is completed and passed the inspection, anchor one end first and then the other end.

[0056] Step 13: After the tensioning is completed, the reserved holes 9 of the tensioning wall columns 2, the buttress columns 6 on both sides of the door opening 5 and the two ends of the lintel 7 are filled with C40 fine stone concrete. It is strictly forbidden to use admixtures containing chloride ions or the like that have a corrosive effect on the prestressed tendons 3, anchors 10 and cladding in this concrete.

[0057] Step 14: Step 14: After the construction of this section of the clinker silo is completed, construction can be carried out layer by layer towards the top.

Claims

1. A clinker silo, comprising a silo wall, a ring beam is arranged below the silo wall, characterized in that A door opening is opened on the warehouse wall, and the door opening is located on the upper part of the ring beam. Buttresses are arranged on the warehouse walls on both sides of the door opening in the horizontal direction. A lintel is arranged on the warehouse wall above the door opening, and the buttresses are fixedly connected to the lintel and the ring beam respectively; a number of tensioned wall columns are arranged at intervals on the ring beam in the vertical direction of the warehouse wall, and prestressed tendon anchor holes are reserved in the tensioned wall columns, lintels and buttresses along the vertical direction. The ring beam and the tensioned wall columns, the lintel and the tensioned wall columns, the buttresses and the tensioned wall columns, and the tensioned wall columns are all anchored by prestressed tendons; the prestressed tendons are arranged in parallel with the prestressed tendons at the lintel and the ring beam after being bent at the upper and lower edges of the door opening, and are anchored at the tensioned wall columns; additional prestressed tendons are symmetrically arranged on the inner and outer sides of the lintel, and are anchored at both ends of the lintel.

2. A clinker silo according to claim 1, characterized in that Spiral reinforcements are respectively arranged at both ends of the prestressed tendons. The spiral reinforcements are sleeved on the outside of the prestressed tendons and fixedly connected to the end anchor plates of the fixed end anchor or the tensioning end anchor.

3. A clinker silo according to claim 1, characterized in that Prestressed tendons are arranged below the ring beam of the warehouse wall in a plum blossom shape along the elevation of the warehouse wall and anchored to the tension wall columns.

4. A method for arranging a clinker storage according to claim 1, characterized in that The following steps are involved: Step 1: Determine the cross-sectional dimensions of the warehouse wall, tensioned pilasters and ring beams; Step 2: Determine the specific dimensions and elevations of the door opening, buttresses and lintels; Step 3: Determine the model, length and number of prestressed tendons and additional prestressed tendons, and cut them; Step 4: According to the specific size and elevation of the door opening, buttresses and lintels, combined with step 3, determine the specific size of the prestressed tendons at the upper and lower edges of the door opening and cut them; Step 5: Arrange the steel skeleton of the warehouse wall, tensioned pilasters, ring beams, door openings, buttresses and lintels around the door openings; Step 6: First fix the fixed end anchor and the tension end anchor in the internal steel skeleton of the tension wall column, and then arrange the cut prestressed tendons in a fixed position; Step 7: Install the template of the warehouse wall below the bottom of the door opening; Step 8: pouring concrete for the silo wall, vibrating and curing; Step 9: After the concrete strength of the warehouse wall reaches the required level, fix the fixed end anchors and the tension end anchors to the steel skeletons of the buttresses, tensioned pilasters and both ends of the lintel on both sides of the door opening, and arrange the cut prestressed tendons in fixed positions; Step 10: Install the warehouse wall template within the door opening elevation range; Step 11: pouring concrete for the silo wall, vibrating and curing; Step 12: The prestressed tendons are tensioned after the concrete reaches 100% of the design strength. The tensioning sequence is from bottom to top, with each prestressed tendon being tensioned one by one until the entire tendon is tensioned. After the prestressing is completed and passed the inspection, one end is anchored first and then the other end. Step 13: After the tensioning is completed, the reserved holes in the wall columns, the buttresses on both sides of the door opening, and the ends of the lintel will be filled with C40 fine stone concrete.

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